CN108195355A - The evaluation method and evaluating apparatus of a kind of river health - Google Patents
The evaluation method and evaluating apparatus of a kind of river health Download PDFInfo
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Abstract
This application provides the evaluation method and evaluating apparatus of a kind of river health, this method includes：The hydrologic parameter in the river to be evaluated of set period of time is acquired, hydrologic parameter includes flow, water temperature, precipitation and the temperature in river to be evaluated；The flow and precipitation of first time period are fitted, obtain the first fitting coefficient；The flow and precipitation of second time period are fitted, obtain the second fitting coefficient；The water temperature and temperature of first time period are fitted, obtain third fitting coefficient；The water temperature and temperature of second time period are fitted, obtain the 4th fitting coefficient；According to the first fitting coefficient, the second fitting coefficient, the flow coefficient of variation of the river to be evaluated in set period of time is determined；According to third fitting coefficient, the 4th fitting coefficient, the water temperature coefficient of variation of the river to be evaluated in set period of time is determined；The Health Category in river to be evaluated is evaluated according to the flow coefficient of variation and the water temperature coefficient of variation.The application can evaluate the Health Category in no dam river.
Description
Technical field
This application involves water area monitoring technical field, evaluation method and evaluation in particular to a kind of river health
Device.
Background technology
Natural river often has the function of complexity, and important role is suffered to human society and natural environment.With
This simultaneously, the mankind also affect the development and utilization in river the performance of every effect in river, and particularly its ecological functions are past
Toward ignored during river is developed and used.River health assessment gradually applies to commenting for river as a kind of tool
During valency and management, important foundation is provided for stream protection.
The evaluation of existing river is most of for overall merit, i.e., by the not Tongfang such as the hydrology, water quality, habitat, ecosystem
The parameter in face is included in appraisement system, carries out and measures and analyze.Wherein, hydrologic parameter evaluation is more important one side.
Existing evaluation method is analyzed primarily directed to the flow and hydrographic survey sequence in river, calculating such as river pressure index,
The parameters such as ecological flow degree of protection, water temperature degree of variation, set up on this basis standard to single river or entire basin into
Row evaluation and classification.This evaluation method is merely with parameters such as the flows, water level and water temperature in river, and this method is to mankind's activity
It is extremely applicable in the river of building a dam for adjusting flow action.Conversely, for no dam river, the variation of River Hydrology parameter is main
Come from the variation of the meteorological conditions such as precipitation and temperature in basin, because mankind's activity is secondary cause therein, therefore with top
Method, which does not apply to, is reflected in no dam river influence caused by mankind's activity.
Invention content
In view of this, the evaluation method and evaluating apparatus that are designed to provide a kind of river health of the application, to nothing
The general level of the health in dam river is evaluated.
In a first aspect, the embodiment of the present application provides a kind of evaluation method of river health, including：
The hydrologic parameter in the river to be evaluated of set period of time is acquired, the hydrologic parameter includes the river to be evaluated
Flow, water temperature, precipitation and temperature, the set period of time include first time period and second time period；
According to the flow of the set period of time and the first setting relationship of precipitation, to the flow of the first time period
It is fitted with precipitation, obtains the first fitting coefficient；The flow and precipitation of the second time period are fitted, obtained
Second fitting coefficient；
According to the second of the water temperature of the set period of time and temperature the setting relationship, to the water temperature of the first time period with
Temperature is fitted, and obtains third fitting coefficient；The water temperature and temperature of the second time period are fitted, obtain the 4th plan
Collaboration number；
According to the daily average water discharge of first fitting coefficient, second fitting coefficient and the river to be evaluated, really
Fixed river to be evaluated is in the flow coefficient of variation of the set period of time；
According to the average daily water temperature of the third fitting coefficient, the 4th fitting coefficient and the river to be evaluated, really
Fixed river to be evaluated is in the water temperature coefficient of variation of the set period of time；
Health Category is carried out to the river to be evaluated according to the flow coefficient of variation and the water temperature coefficient of variation
Evaluation.
With reference to first aspect, the embodiment of the present application provides the first possible embodiment of first aspect, described
According to the flow of the set period of time and the first setting relationship of precipitation, to the flow of the first time period and precipitation into
Row fitting, obtains the first fitting coefficient；The flow and precipitation of the second time period are fitted, obtain the second fitting system
Number, including：
Linear fit is carried out to the precipitation and the flow of the first time period, obtains the first fitting system
Number；
Linear fit is carried out to the precipitation and the flow of the second time period, obtains the second fitting system
Number.
With reference to first aspect, the embodiment of the present application provides second of possible embodiment of first aspect, described
According to the water temperature of the set period of time and the second setting relationship of temperature, the water temperature and temperature of the first time period are intended
It closes, obtains third fitting coefficient；The water temperature and temperature of the second time period are fitted, obtain the 4th fitting coefficient, is wrapped
It includes：
Linear fit is carried out to the water temperature and the temperature of the first time period, obtains the third fitting system
Number；
Linear fit is carried out to the water temperature and the temperature of the second time period, obtains the 4th fitting system
Number.
The possible embodiment of with reference to first aspect the first, the embodiment of the present application provide the third of first aspect
Possible embodiment, the hydrologic parameter in the river to be evaluated of the acquisition set period of time is acquired according to year, described
Linear fit is carried out to the precipitation and the flow of the first time period, obtains first fitting coefficient, including：
The flow is linear in the first time period with precipitation：ΔQi=arQ,i+brQ,i·ri；Wherein, Δ
QiFor the flow of the first time period, riFor the precipitation of the first time period, arQ,iAnd brQ,iFor the described first fitting system
Number, arQ,iRepresent the standard flow of the first time period, brQ,iRepresent the flow precipitation related coefficient of the first time period；
Ar is obtained according to the following formulaQ,iAnd brQ,i：
Wherein, nr=b-a+1, b are the first time period
End time, a be the first time period at the beginning of, nrTime span for the first time period；
The precipitation to the second time period carries out linear fit with the flow, obtains described second and intends
Collaboration number, including：
The flow and precipitation are linear in the second time period：ΔQi'=aeQ,i+beQ,i·ri'；Wherein,
ΔQi' the second time period flow, ri' be the second time period precipitation；aeQ,iAnd beQ,iFor the described second fitting
Coefficient, aeQ,iFor the standard flow of the second time period, beQ,iFlow precipitation related coefficient for the second time period；
Ae is obtained according to the following formulaQ,iAnd beQ,i：
Wherein, ne=d-c+1, d are described second
The end time of period, at the beginning of c is the second time period, neTime span for the second time period.
The possible embodiment of with reference to first aspect the first, the embodiment of the present application provide the first face the 4th kind can
The embodiment of energy, the hydrologic parameter in the river to be evaluated of the acquisition set period of time is acquired according to the moon, described right
The precipitation of the first time period carries out linear fit with the flow, obtains first fitting coefficient, including packet
It includes：
The flow and jth year of the precipitation in the first time period are linear：ΔQi,j=arQ,i,j+
brQ,i,j·ri,j；Wherein, Δ Qi,jFor the flow in jth year in the first time period, ri,jFor jth year in the first time period
Precipitation, arQ,i,jAnd brQ,i,jFor Δ Qi,jWith ri,jIn the fitting coefficient in jth year, arQ,i,jIt is in the first time period
The standard flow of j, brQ,i,jFlow precipitation related coefficient for the jth year in first time period；
Δ Q is determined according to the following formulai,jWith ri,jIn the fitting coefficient ar in jth yearQ,i,jAnd brQ,i,j：
The first fitting coefficient ar is determined according to the following formulaQ,iAnd brQ,i；
Wherein, nr=b-a+1, b are the first time period
End time, at the beginning of a is the first time period, nrTime span for the first time period；
The precipitation to the second time period carries out linear fit with the flow, obtains described second and intends
Collaboration number, including：
Flow and jth ' year of the precipitation in the second time period are linear：ΔQ'i,j'=ae'Q,i,j'+
be'Q,i,j'·r'i,j'；Wherein, Δ Q'i,j'The flow in jth ' year, r' in the second time periodi,j'For the second time period
The precipitation in middle jth ' year；ae'Q,i,j'And be'Q,i,j'For Δ Q'i,j'And r'i,j'Jth ' year is fitted in the second time period
Coefficient, ae'Q,i,j'Represent the standard flow in jth ' year in the second time period, be'Q,i,j'It is in the second time period
The flow precipitation related coefficient of j'；
Δ Q' is determined according to the following formulai,j'With r'i,j'The fitting coefficient in jth ' year in the second time period
ae'Q,i,j'And be'Q,i,j'：
Second fitting coefficient of the second time period is determined according to the following formula：
Wherein, ne=d-c+1, d are second time
The end time of section, at the beginning of c is the second time period, neTime span for the second time period.
Second of possible embodiment with reference to first aspect, the embodiment of the present application provide the 5th kind of first aspect
Possible embodiment, the hydrologic parameter in the river to be evaluated of the acquisition set period of time is acquired according to year, to institute
The water temperature and the temperature for stating first time period carry out linear fit, obtain the third fitting coefficient, including：
The water temperature is in a linear relationship in the first time period with the temperature：ΔTi=arT,i+brT,i·ti；Wherein,
ΔTiFor the water temperature of the first time period, tiFor the temperature of the first time period, arT,iAnd brT,iIt is fitted for the third and is
Number, arT,iFor the fiducial temperature of the first time period, brT,iWater temperature and air temperature related coefficient for the first time period；
The third fitting coefficient ar is obtained according to the following formulaT,iAnd brT,i：
Wherein nr=b-a+1, b are the first time period
End time, at the beginning of a is the first time period, nrTime span for the first time period；
Linear fit is carried out to the water temperature and the temperature of the second time period, obtains the 4th fitting system
Number, including：
The water temperature is in a linear relationship in the second time period with the temperature：ΔTi'=aeT,i+beT,i·ti'；Its
In, Δ Ti' be the second time period water temperature, ti' be the second time period temperature, aeT,iAnd beT,iFor the third
Fitting coefficient, aeT,iFor the fiducial temperature of the second time period, beT,iWater temperature and air temperature phase relation for the second time period
Number；
Ae is obtained according to the following formulaT,iAnd beT,i：
Wherein, neWhen=d-c+1, d are described second
Between section end time, c be the period at the beginning of, neTime span for the second time period.
Second of possible embodiment with reference to first aspect, the embodiment of the present application provide the 6th kind of first aspect
Possible embodiment, the hydrologic parameter in the river to be evaluated of the acquisition set period of time is acquired according to the moon, described
Linear fit is carried out to the water temperature and the temperature of the first time period, obtains the third fitting coefficient, including：
The water temperature and jth year of the temperature in the first time period are linear：ΔTi,j=arT,i,j+
brT,i,j·ti.j；Wherein, Δ Ti,jFor the water temperature in jth year in the first time period, ti.jFor jth year in the first time period
Temperature, arT,i,jAnd brT,i,jFor Δ Ti,jWith ti.jThe fitting coefficient in jth year, ar in the first time periodT,i,jIt is described
The benchmark water temperature in jth year, br in first time periodT,i,jWater temperature and air temperature related coefficient for the jth year in the first time period；
Δ T is determined according to the following formulai,jWith ti.jThe fitting coefficient ar in jth year in the first time periodT,i,jWith
brT,i,j：
The third fitting parameter ar of the first time period is determined according to the following formulaT,iAnd brT,i；
Wherein nr=b-a+1, b are the knot of the first time period
The beam time, at the beginning of a is the first time period, nrTime span for the first time period；
The water temperature to the second time period carries out linear fit with the temperature, obtains the 4th fitting
Coefficient, including：
Jth ' the year in the second time period is linear with the temperature for the water temperature：ΔT'i,j'=ar'T,i,j'
+br'T,i,j'·t'i.j'；Wherein, Δ T'i,j'The flow in jth ' year, t' in the second time periodi.j'For the second time period
The precipitation in middle jth ' year；ar'T,i,j'And br'T,i,j'For Δ T'i,j'And t'i.j'Jth ' year is fitted in the second time period
Coefficient, ar'T,i,j'Represent the standard flow in jth ' year in the second time period, br'T,i,j'It represents in the second time period
The flow precipitation related coefficient in jth ' year；
Δ T' is determined according to the following formulai,j'With t'i.j'The fitting coefficient in jth ' year in the second time period
ar'T,i,j'And br'T,i,j'：
The 4th fitting parameter ae of the second time period is determined according to the following formulaT,iAnd beT,i：
Wherein, ne=d-c+1, d are second time
The end time of section, at the beginning of c is the period, neTime span for the second time period.
The third possible embodiment or the 4th kind of possible embodiment of first aspect with reference to first aspect,
The embodiment of the present application provides the 7th kind of possible embodiment of first aspect, described according to first fitting coefficient, institute
The daily average water discharge in the second fitting coefficient and the river to be evaluated is stated, determines stream of the river to be evaluated in the setting time
The coefficient of variation is measured, including：
Work as arQ,iWhen=0, the flow coefficient of variation in the setting time is determined according to the following formula：
Work as arQ,iWhen ≠ 0, the flow coefficient of variation in the setting time is determined according to the following formula：
Wherein,For the average daily of the river to be evaluated
Flow.
The 5th kind of possible embodiment or the 6th kind of possible embodiment of first aspect with reference to first aspect,
The embodiment of the present application provides the 8th kind of possible embodiment of first aspect, described according to the third fitting coefficient, institute
The average temperature in the 4th fitting coefficient and the river to be evaluated is stated, determines water of the river to be evaluated in the setting time
The warm coefficient of variation, including：
The water temperature coefficient of variation in the setting time is determined according to the following formula：
Wherein, TEiFor the water temperature of the second time period, TRi
For the water temperature of the first time period,Average daily water temperature for river to be evaluated.
The 8th kind of possible embodiment with reference to first aspect, the embodiment of the present application provide the 9th kind of first aspect
Possible embodiment calculates the water temperature T E of the second time period according to the following formulaiWith the water temperature of the first time period
TRi：
Temperature on average for the second time period；
Temperature on average for the first time period.
With reference to first aspect, the embodiment of the present application provides the tenth kind of possible embodiment of first aspect, described
The river to be evaluated is evaluated according to the flow coefficient of variation and the water temperature coefficient of variation, including：
The flow coefficient of variation and the water temperature coefficient of variation are subjected to average summation, obtain the hydrology in the river to be evaluated
Parameter coefficient；
According to reflecting for the hydrologic parameter coefficient and the hydrologic parameter coefficient to prestore and the Health Category in river to be evaluated
Relationship is penetrated, determines the Health Category in the river to be evaluated.
Second aspect, the embodiment of the present application provide a kind of evaluating apparatus of river health, including：
Acquisition module, for acquiring the hydrologic parameter in the river to be evaluated of set period of time, the hydrologic parameter includes institute
Flow, water temperature, precipitation and the temperature in river to be evaluated are stated, the set period of time includes first time period and the second time
Section；
Fitting module, for the first setting relationship of the flow according to the set period of time and precipitation, to described the
The flow of one period is fitted with precipitation, obtains the first fitting coefficient；To the flow and precipitation of the second time period
Amount is fitted, and obtains the second fitting coefficient；
And according to the water temperature of the set period of time and the second setting relationship of temperature, to the first time period
Water temperature is fitted with temperature, obtains third fitting coefficient；The water temperature and temperature of the second time period are fitted, obtained
4th fitting coefficient；
Determining module, for according to first fitting coefficient, second fitting coefficient and the river to be evaluated
Daily average water discharge, determine the flow coefficient of variation of the river to be evaluated in the set period of time；
And the average water according to the third fitting coefficient, the 4th fitting coefficient and the river to be evaluated
Temperature determines the water temperature coefficient of variation of the river to be evaluated in the set period of time；
Evaluation module, for according to the flow coefficient of variation and the water temperature coefficient of variation to the river to be evaluated
Carry out Health Category evaluation.
Compared in the prior art, the application is joined by acquiring the hydrology in the river to be evaluated of a set period of time
Number, the set period of time are divided into first time period and second time period, pass through the flow of first time period and the fitting of precipitation
Coefficient, the flow of second time period and the fitting coefficient of precipitation determine that the river to be evaluated makes a variation in the flow of set period of time
Coefficient, by the water temperature of first time period and the fitting coefficient of temperature, the water temperature of second time period and the fitting coefficient of temperature are true
Determine the water temperature coefficient of variation of the river to be evaluated in set period of time, then pass through the flow coefficient of variation and the evaluation of the water temperature coefficient of variation
The river to be evaluated, it is possible to instruct the Health Category in the river to be evaluated in set period of time.
For the above-mentioned purpose of the application, feature and advantage is enable to be clearer and more comprehensible, preferred embodiment cited below particularly, and coordinate
Appended attached drawing, is described in detail below.
Description of the drawings
It, below will be to needed in the embodiment attached in order to illustrate more clearly of the technical solution of the embodiment of the present application
Figure is briefly described, it should be understood that the following drawings illustrates only some embodiments of the application, therefore is not construed as pair
The restriction of range, for those of ordinary skill in the art, without creative efforts, can also be according to this
A little attached drawings obtain other relevant attached drawings.
Fig. 1 shows a kind of evaluation method flow chart for river health that the embodiment of the present application is provided；
The precipitation and the approximating method flow chart of flow provided Fig. 2 shows the embodiment of the present application；
Fig. 3 shows the approximating method flow chart of the water temperature that the embodiment of the present application provided and temperature；
Fig. 4 shows the Health Category flow chart for determining river to be evaluated that the embodiment of the present application is provided；
Fig. 5 shows a kind of evaluating apparatus structure diagram for river health that the embodiment of the present application is provided.
Specific embodiment
Purpose, technical scheme and advantage to make the embodiment of the present application are clearer, below in conjunction with the embodiment of the present application
The technical solution in the embodiment of the present application is clearly and completely described in middle attached drawing, it is clear that described embodiment is only
It is some embodiments of the present application, instead of all the embodiments.The application being usually described and illustrated herein in the accompanying drawings is real
Applying the component of example can be configured to arrange and design with a variety of different.Therefore, below to the application's for providing in the accompanying drawings
The detailed description of embodiment is not intended to limit claimed scope of the present application, but is merely representative of the selected reality of the application
Apply example.Based on embodiments herein, institute that those skilled in the art are obtained under the premise of creative work is not made
There is other embodiment, shall fall in the protection scope of this application.
Embodiment 1
The embodiment of the present application 1 proposes a kind of evaluation method of river health, as shown in Figure 1, the flow chart for this method,
It is as follows：
S100, acquires the hydrologic parameter in the river to be evaluated of set period of time, which includes river to be evaluated
Flow, water temperature, precipitation and temperature, the set period of time include first time period and second time period.
Wherein, set period of time is the pre-set period examined to river to be evaluated, for example, investigating near
20 years, the river health in river to be evaluated, it was nearly 20 years to nearly 10 years that can take first time period, and it is nearly 10 to take second time period
Year, first time period, which generally chooses mankind's activity, influences river the minimum time, using first time period as to the second time
The reference time of section originally significantly can evaluate the variation to nearly 10 years rivers in corresponding nearly 20 years in nearly 10 years in this way.
According to river basins landforms are specific, scientific principle and principle of similarity are determined, river is divided into multiple sections, takes certain
One section is river to be evaluated as river to be evaluated, in order to which the river to be evaluated is not influenced by upper river, in this Shen
Please in, using stationary stream amount Δ QiWith hydrostatic temperature Δ TiIt represents, is defined as follows：
In formula (1), as i=1, i.e., when river to be evaluated is the first section in whole river, stationary stream amount be it from
Body flow, works as i=2 ..., and during n, stationary stream amount subtracts the river discharge of its upper reach for the flow in the river to be evaluated.
In formula (2), as i=1, i.e., when river to be evaluated is the first section in whole river, hydrostatic temperature is the section
The water temperature in river itself, works as i=2 ..., and during n, hydrostatic temperature subtracts its upstream river for the total flow in this section of river and the product of water temperature
Section and the product of water temperature it is poor again divided by the net flow of the section.
It defines in this way, is in order to enable the flow and water temperature of the section to be evaluated are not influenced by upper reach, accurately
Property higher.
S110, according to the first of the flow of set period of time and precipitation the setting relationship, to the flow of first time period with
Precipitation is fitted, and obtains the first fitting coefficient；The flow and precipitation of second time period are fitted, obtain the second plan
Collaboration number.
A kind of preferable embodiment, the embodiment of the present application 1 propose technical solution in, flow chart as shown in Fig. 2,
In step S110, including step in detail below：
S200 carries out linear fit to the precipitation and flow of first time period, obtains the first fitting coefficient.
In this application, first time period represents reference time section, i.e. man's activity less period.
When acquiring the hydrologic parameter in river to be evaluated of set period of time, the temporal frequency of acquisition is different, obtains first
The process of fitting coefficient is not identical, and the embodiment of the present application is explained in detail using the temporal frequency acquired as year and the moon
It states：
If the hydrologic parameter for acquiring the river to be evaluated of set period of time is acquired according to year, the first fitting is obtained
The process of coefficient is as follows：
Flow is linear in first time period with precipitation：ΔQi=arQ,i+brQ,i·ri；Wherein, Δ QiIt is first
The flow in the river to be evaluated of period, riFor the precipitation of first time period river region to be evaluated, arQ,iAnd brQ,i
For the first fitting coefficient, arQ,iRepresent the standard flow for stating first time period, brQ,iRepresent the flow precipitation phase of first time period
Relationship number.
Here standard flow arQ,iReflection is river to be evaluated flow of itself under no precipitation condition, for example, the river
The flow of stream mostlys come from iceberg snow melt, if ar is calculated in fruitQ,i＜ 0, then enable arQ,i=0, the river to be evaluated is represented in this way
Stream is all from precipitation；brQ,iFor flow precipitation related coefficient, reflection is river region to be evaluated flow by precipitation
Influence ratio, the value is bigger, and it is bigger just to illustrate that river region to be evaluated flow is influenced by precipitation.
The precipitation in river to be evaluated and net flow are carried out by linear fit according to least square method and obtain arQ,iAnd brQ,i：
Wherein, nr=b-a+1, b are the knot of first time period
The beam time, at the beginning of a is first time period, nrTime span for the first time period；For example, a=2000, b=
2010, then nr=10 years.
If the hydrologic parameter for acquiring the river to be evaluated of set period of time is acquired according to the moon, the first fitting is obtained
The process of coefficient is as follows：
Flow and jth year of the precipitation in first time period are linear, wherein, jth year includes 12 months：Δ
Qi,j=arQ,i,j+brQ,i,j·ri,j；Wherein, Δ Qi,jFor the flow in jth year in first time period, ri,jFor in first time period
The precipitation in jth year, arQ,i,jAnd brQ,i,jFor Δ Qi,jWith ri,jIn the fitting coefficient in jth year, arQ,i,jFor in first time period
The standard flow in jth year, brQ,i,jFlow precipitation related coefficient for the jth year in first time period；
According to the precipitation in jth year of the least square method by river to be evaluated in first time period and net flow into line
Property is fitted to obtain fitting coefficient arQ,i,jAnd brQ,i,j：
Equally, fitting coefficient arQ,i,jReflection is in jth year, and the river to be evaluated is without itself stream under precipitation condition
Amount；brQ,i,jReflection be river to be evaluated in jth year, region flow is influenced ratio by precipitation.
The ar acquired according to two above formulaQ,i,jAnd brQ,i,jWhat is represented is in jth year, and river to be evaluated is without precipitation
Under the conditions of own traffic and region flow influenced ratio by precipitation, if wondering 2000 to 2010, commenting
Valency river is influenced ratio without the own traffic under precipitation condition and region flow by precipitation, then is needed according to following public affairs
Formula determines the first fitting coefficient arQ,iAnd brQ,i：
Wherein, nr=b-a+1, b are the end of first time period
Time, at the beginning of a is first time period, nrTime span for first time period；Enable a=2000, b=2010, you can.
S210 carries out linear fit to the precipitation and flow of second time period, obtains the second fitting coefficient.
In this application, second time period represents evaluation time section, that is, wants shadow of the evaluation human activity to river health
The loud period, generally with current time relatively.
If the hydrologic parameter for acquiring the river to be evaluated of set period of time is acquired according to year, the second fitting is obtained
The process of coefficient is as follows：
Flow and precipitation are linear in second time period：ΔQi'=aeQ,i+beQ,i·ri'；Wherein, Δ Qi' be
The flow of second time period, ri' be second time period precipitation；aeQ,iAnd beQ,iFor the second fitting coefficient, aeQ,iIt is second
The standard flow of period, beQ,iFlow precipitation related coefficient for second time period；
The precipitation in the river to be evaluated in second time period and net flow are carried out by linear fit according to least square method
Obtain aeQ,iAnd beQ,i：
Wherein, ne=d-c+1, d were the second time
The end time of section, at the beginning of c is second time period, neFor the time span of second time period, d here, which can take, to be worked as
The preceding date, such as 2017, c can take the date identical with the b dates, such as 2010, can also take the day different from the b dates
Phase, such as 2012.
If the hydrologic parameter for acquiring the river to be evaluated of set period of time is acquired according to the moon, the second fitting is obtained
The process of coefficient is as follows：
Flow and jth ' year of the precipitation in second time period are linear：ΔQ'i,j'=ae'Q,i,j'+be
'Q,i,j'·r'i,j'；Wherein, Δ Q'i,j'For the flow in jth in second time period ' year, r'i,j'For jth in second time period ' year
Precipitation；ae'Q,i,j'And be'Q,i,j'For Δ Q'i,j'And r'i,j'Jth ' year fitting coefficient, ae' in second time periodQ,i,j'
Represent the standard flow in jth in second time period ' year, be'Q,i,j'Flow precipitation phase relation for jth in second time period ' year
Number.
The precipitation in jth in second time period ' year is carried out linear fit with net flow according to least square method to be intended
Collaboration number ae'Q,i,j'And be'Q,i,j'：
The second fitting coefficient of second time period is determined according to the following formula：
Wherein, ne=d-c+1, d are second time period
End time, at the beginning of c is second time period, neFor the time span of second time period, equally, d here can take
Current date, such as 2017, c can take the date identical with the b dates, such as 2010, can also take different from the b dates
Date, such as 2012.
S120, according to the water temperature of set period of time and the second setting relationship of temperature, to the water temperature and gas of first time period
Temperature is fitted, and obtains third fitting coefficient；The water temperature and temperature of second time period are fitted, obtain the 4th fitting system
Number.
A kind of preferable embodiment, the embodiment of the present application 1 propose technical solution in, flow chart as shown in figure 3,
In step S120, including step in detail below：
S300 carries out linear fit to the water temperature and temperature of first time period, obtains third fitting coefficient.
In this application, first time period represents reference time section, i.e. man's activity less period.
At the river to be evaluated for acquiring set period of time, the temporal frequency of acquisition is different, obtains the first fitting coefficient
Process is not identical, and the embodiment of the present application is described in detail using the temporal frequency acquired as year and the moon：
If the hydrologic parameter for acquiring the river to be evaluated of set period of time is acquired according to year, third fitting is obtained
The process of coefficient is as follows：
Water temperature is in a linear relationship in first time period with temperature：ΔTi=arT,i+brT,i·ti；Wherein, Δ TiWhen being first
Between section water temperature, tiFor the temperature of first time period, arT,iAnd brT,iFor third fitting coefficient, arT,iBase for first time period
Quasi- temperature, brT,iWater temperature and air temperature related coefficient for first time period.
The water temperature of first time period and temperature are carried out by linear fit according to least square method and obtain third fitting coefficient
arT,iAnd brT,i：
Wherein nr=b-a+1, b are the end of first time period
Time, at the beginning of a is the first time period, nrFor the time span of the first time period, a, b and n herer
Consistent with meaning presented hereinabove, details are not described herein.
If the hydrologic parameter for acquiring the river to be evaluated of set period of time is acquired according to the moon, third fitting is obtained
The process of coefficient is as follows：
Water temperature and jth year of the temperature in the first time period are linear：ΔTi,j=arT,i,j+brT,i,j·
ti.j；Wherein, Δ Ti,jFor the water temperature in jth year in first time period, ti.jFor the temperature in jth year in first time period, arT,i,jWith
brT,i,jFor Δ Ti,jWith ti.jThe fitting coefficient in jth year, ar in first time periodT,i,jBase for jth year in first time period
Quasi- water temperature, brT,i,jWater temperature and air temperature related coefficient for the jth year in first time period.
According to the fitting coefficient ar in least square method jth year that determines water temperature and temperature in first time periodT,i,jWith
brT,i,j：
The third fitting parameter ar of first time period is determined according to the following formulaT,iAnd brT,i；
Wherein nrAt the end of=b-a+1, b are first time period
Between, at the beginning of a is first time period, nrTime span for first time period.
S310 carries out linear fit to the water temperature and temperature of second time period, obtains the 4th fitting coefficient.
If the hydrologic parameter for acquiring the river to be evaluated of set period of time is acquired according to year, the 4th fitting is obtained
The process of coefficient is as follows：
Water temperature is in a linear relationship in second time period with temperature：ΔTi'=aeT,i+beT,i·ti'；Wherein, Δ Ti' it is the
The water temperature of two periods, ti' be second time period temperature, aeT,iAnd beT,iFor third fitting coefficient, aeT,iFor the second time
The fiducial temperature of section, beT,iWater temperature and air temperature related coefficient for second time period；
The water temperature in river to be evaluated in second time period is carried out linear fit with temperature according to least square method to obtain
aeT,iAnd beT,i：
Wherein, ne=d-c+1, d are second time period
End time, c be the period at the beginning of, neFor the time span of second time period, wherein, c, d and neWith above going out
Existing meaning is consistent, and details are not described herein.
If the hydrologic parameter for acquiring the river to be evaluated of set period of time is acquired according to the moon, the 4th fitting is obtained
The process of coefficient is as follows：
Jth ' the year in second time period is linear with temperature for water temperature：ΔT'i,j'=ar'T,i,j'+br'T,i,j'·
t'i.j'；Wherein, Δ T'i,j'The flow in jth ' year, t' in the second time periodi.j'Precipitation for jth in second time period ' year
Amount；ar'T,i,j'And br'T,i,j'For Δ T'i,j'And t'i.j'Jth ' year fitting coefficient, ar' in second time periodT,i,j' represent
The standard flow in jth ' year, br' in two periodsT,i,j'Represent the flow precipitation related coefficient in jth in second time period ' year.
The water temperature in river to be evaluated in second time period and temperature are carried out by linearly determining Δ T' according to least square methodi,j'
With t'i.j'The fitting coefficient ar' in jth ' year in the second time periodT,i,j'And br'T,i,j'：
The 4th fitting parameter ae of second time period is determined according to the following formulaT,iAnd beT,i：
Wherein, ne=d-c+1, d are second time period
End time, at the beginning of c is the period, neTime span for second time period.
S130 according to the daily average water discharge of the first fitting coefficient, the second fitting coefficient and river to be evaluated, is determined to be evaluated
River is in the flow coefficient of variation of set period of time.
Work as arQ,iWhen=0, the flow coefficient of variation in setting time is determined according to the following formula：
Work as arQ,iWhen ≠ 0, the flow coefficient of variation in setting time is determined according to the following formula：
Wherein,For the daily average water discharge in river to be evaluated,Represent the ratio between the time span of total flow and set period of time of the river to be evaluated in set period of time.
S140 according to the average daily water temperature of third fitting coefficient, the 4th fitting coefficient and river to be evaluated, is determined to be evaluated
River is in the water temperature coefficient of variation of set period of time.
The water temperature coefficient of variation in the setting time is determined according to the following formula：
Wherein, TEiFor the water temperature of the second time period, TRi
For the water temperature of first time period,Average daily water temperature for river to be evaluated.
Wherein, Temperature on average for the second time period.
Temperature on average for the first time period.
S150 carries out Health Category evaluation according to the flow coefficient of variation and the water temperature coefficient of variation to river to be evaluated.
A kind of preferable embodiment, in the technical solution of the proposition of the embodiment of the present application 1, as shown in figure 4, specific steps
It is as follows：
The flow coefficient of variation and the water temperature coefficient of variation are carried out average summation by S400, obtain the hydrology ginseng in river to be evaluated
Number system number.
S410, according to reflecting for hydrologic parameter coefficient and the hydrologic parameter coefficient to prestore and the Health Category in river to be evaluated
Relationship is penetrated, determines the Health Category in river to be evaluated.
Such as hydrologic parameter coefficientThe Health Category in hydrologic parameter and river to be evaluated has what is prestored to reflect
Relationship is penetrated, in this way, after obtaining hydrologic parameter S, it is possible to which the mapping relations according to prestoring determine the Health Category in river to be evaluated.
For example, when hydrologic parameter is less than 5%, it is evaluated as health；When hydrologic parameter is 5~10%, it is evaluated as basic
Health；When hydrologic parameter is 10~30%, it is evaluated as inferior health；When hydrologic parameter be more than 30%, be evaluated as unhealthy.
Wherein, river health to be evaluated represents influence very little of the mankind to the river to be evaluated, can be neglected；It is to be evaluated
River is unhealthy to represent that the mankind are larger to the interference in river to be evaluated, has significantly alterred the rule of hydrologic process.
A kind of preferable embodiment, in the technical solution of the proposition of the embodiment of the present application 1, according to the flow coefficient of variation
When determining the Health Category in river to be evaluated with the water temperature coefficient of variation, it can also carry out in the following way：
Compare the size of the flow coefficient of variation and the water temperature coefficient of variation, take the coefficient of variation smaller to evaluate river to be evaluated
Health Category, for example, the flow coefficient of variation is smaller, then evaluated using the flow coefficient of variation, if the water temperature coefficient of variation
It is smaller, then it is evaluated using the water temperature coefficient of variation.
Certainly, evaluation method is not limited to above two.
In step S100 to step S150, step S110 and step S120, which is not differentiated between, performs sequence, can be carried out at the same time；
Step S130 and step S140 are not differentiated between equally and are performed sequence, can be carried out at the same time.
Embodiment 2
A kind of evaluating apparatus of river health that the embodiment of the present application 2 proposes, as shown in figure 5, including：Acquisition module
501st, fitting module 502, determining module 503 and evaluation module 504.
Acquisition module 501, for acquiring the hydrologic parameter in the river to be evaluated of set period of time, the hydrologic parameter includes
Flow, water temperature, precipitation and the temperature in the river to be evaluated, the set period of time include first time period and the second time
Section；
Fitting module 502, for the flow according to the set period of time and the first setting relationship of precipitation, to described
The flow of first time period is fitted with precipitation, obtains the first fitting coefficient；To the flow and drop of the second time period
Water is fitted, and obtains the second fitting coefficient；
And according to the water temperature of the set period of time and the second setting relationship of temperature, to the first time period
Water temperature is fitted with temperature, obtains third fitting coefficient；The water temperature and temperature of the second time period are fitted, obtained
4th fitting coefficient；
Determining module 503, for according to first fitting coefficient, second fitting coefficient and the river to be evaluated
The daily average water discharge of stream determines the flow coefficient of variation of the river to be evaluated in the set period of time；
And the average water according to the third fitting coefficient, the 4th fitting coefficient and the river to be evaluated
Temperature determines the water temperature coefficient of variation of the river to be evaluated in the set period of time；
Evaluation module 504, for according to the flow coefficient of variation and the water temperature coefficient of variation to described to be evaluated
River carries out Health Category evaluation.
Preferably, fitting module 502 is specifically used for：
Linear fit is carried out to the precipitation and flow of first time period, obtains the first fitting coefficient.
Linear fit is carried out to the precipitation and flow of second time period, obtains the second fitting coefficient.
And linear fit is carried out with temperature to the water temperature of first time period, obtain third fitting coefficient；
Linear fit is carried out to the water temperature and temperature of second time period, obtains the 4th fitting coefficient.
Compared in the prior art, the application is joined by acquiring the hydrology in the river to be evaluated of a set period of time
Number, the set period of time are divided into first time period and second time period, pass through the flow of first time period and the fitting of precipitation
Coefficient, the flow of second time period and the fitting coefficient of precipitation determine that the river to be evaluated makes a variation in the flow of set period of time
Coefficient, by the water temperature of first time period and the fitting coefficient of temperature, the water temperature of second time period and the fitting coefficient of temperature are true
Determine the water temperature coefficient of variation of the river to be evaluated in set period of time, then pass through the flow coefficient of variation and the evaluation of the water temperature coefficient of variation
The river to be evaluated, it is possible to instruct the Health Category in the river to be evaluated in set period of time.
A kind of computer program product of the evaluation method of river health of progress that the embodiment of the present application is provided, including depositing
The computer readable storage medium of program code is stored up, the instruction that said program code includes can be used for performing previous methods implementation
Method described in example, specific implementation can be found in embodiment of the method, and details are not described herein.
The evaluating apparatus of a kind of river health that the embodiment of the present application is provided can be equipment on specific hardware or
Software or firmware for being installed in equipment etc..The technology effect of the device that the embodiment of the present application is provided, realization principle and generation
Fruit is identical with preceding method embodiment, and to briefly describe, device embodiment part does not refer to part, can refer to preceding method implementation
Corresponding contents in example.It is apparent to those skilled in the art that for convenience and simplicity of description, foregoing description
The specific work process of system, device and unit can refer to the corresponding process in above method embodiment, no longer superfluous herein
It states.
In embodiment provided herein, it should be understood that disclosed device and method, it can be by others side
Formula is realized.The apparatus embodiments described above are merely exemplary, for example, the division of the unit, only one kind are patrolled
Volume function divides, and can have other dividing mode in actual implementation, in another example, multiple units or component can combine or can
To be integrated into another system or some features can be ignored or does not perform.Another point, shown or discussed is mutual
Coupling, direct-coupling or communication connection can be INDIRECT COUPLING or communication link by some communication interfaces, device or unit
It connects, can be electrical, machinery or other forms.
The unit illustrated as separating component may or may not be physically separate, be shown as unit
The component shown may or may not be physical unit, you can be located at a place or can also be distributed to multiple
In network element.Some or all of unit therein can be selected according to the actual needs to realize the mesh of this embodiment scheme
's.
In addition, each functional unit in the embodiment provided in the application can be integrated in a processing unit, also may be used
To be that each unit is individually physically present, can also two or more units integrate in a unit.
If the function is realized in the form of SFU software functional unit and is independent product sale or in use, can be with
It is stored in a computer read/write memory medium.Based on such understanding, the technical solution of the application is substantially in other words
The part contribute to the prior art or the part of the technical solution can be embodied in the form of software product, the meter
Calculation machine software product is stored in a storage medium, is used including some instructions so that a computer equipment (can be
People's computer, server or network equipment etc.) perform each embodiment the method for the application all or part of step.
And aforementioned storage medium includes：USB flash disk, mobile hard disk, read-only memory (ROM, Read-Only Memory), arbitrary access are deposited
The various media that can store program code such as reservoir (RAM, Random Access Memory), magnetic disc or CD.
It should be noted that：Similar label and letter represents similar terms in following attached drawing, therefore, once a certain Xiang Yi
It is defined in a attached drawing, does not then need to that it is further defined and explained in subsequent attached drawing, in addition, term " the
One ", " second ", " third " etc. are only used for distinguishing description, and it is not intended that instruction or hint relative importance.
Finally it should be noted that：The specific embodiment of embodiment described above, only the application, to illustrate the application
Technical solution, rather than its limitations, the protection domain of the application is not limited thereto, although with reference to the foregoing embodiments to this Shen
It please be described in detail, it will be understood by those of ordinary skill in the art that：Any one skilled in the art
In the technical scope disclosed in the application, it can still modify to the technical solution recorded in previous embodiment or can be light
It is readily conceivable that variation or equivalent replacement is carried out to which part technical characteristic；And these modifications, variation or replacement, do not make
The essence of corresponding technical solution is detached from the spirit and scope of the embodiment of the present application technical solution.The protection in the application should all be covered
Within the scope of.Therefore, the protection domain of the application described should be subject to the protection scope in claims.
Claims (12)
1. a kind of evaluation method of river health, which is characterized in that including：
The hydrologic parameter in the river to be evaluated of set period of time is acquired, the hydrologic parameter includes the stream in the river to be evaluated
Amount, water temperature, precipitation and temperature, the set period of time include first time period and second time period；
According to the flow of the set period of time and the first setting relationship of precipitation, to the flow and drop of the first time period
Water is fitted, and obtains the first fitting coefficient；The flow and precipitation of the second time period are fitted, obtain second
Fitting coefficient；
According to the water temperature of the set period of time and the second setting relationship of temperature, to the water temperature and temperature of the first time period
It is fitted, obtains third fitting coefficient；The water temperature and temperature of the second time period are fitted, obtain the 4th fitting system
Number；
According to the daily average water discharge of first fitting coefficient, second fitting coefficient and the river to be evaluated, determine to treat
Evaluate the flow coefficient of variation of the river in the set period of time；
According to the average daily water temperature of the third fitting coefficient, the 4th fitting coefficient and the river to be evaluated, determine to treat
Evaluate the water temperature coefficient of variation of the river in the set period of time；
Health Category evaluation is carried out to the river to be evaluated according to the flow coefficient of variation and the water temperature coefficient of variation.
2. the according to the method described in claim 1, it is characterized in that, flow and precipitation according to the set period of time
First setting relationship, the flow and precipitation of the first time period are fitted, obtain the first fitting coefficient；To described
The flow of second time period is fitted with precipitation, obtains the second fitting coefficient, including：
Linear fit is carried out to the precipitation and the flow of the first time period, obtains first fitting coefficient；
Linear fit is carried out to the precipitation and the flow of the second time period, obtains second fitting coefficient.
3. the according to the method described in claim 1, it is characterized in that, water temperature and temperature according to the set period of time
Second setting relationship, is fitted the water temperature and temperature of the first time period, obtains third fitting coefficient；To described second
The water temperature of period is fitted with temperature, obtains the 4th fitting coefficient, including：
Linear fit is carried out to the water temperature and the temperature of the first time period, obtains the third fitting coefficient；
Linear fit is carried out to the water temperature and the temperature of the second time period, obtains the 4th fitting coefficient.
4. the according to the method described in claim 2, it is characterized in that, hydrology in the river to be evaluated of the acquisition set period of time
Parameter is acquired according to year, and the precipitation to the first time period carries out linear fit with the flow,
First fitting coefficient is obtained, including：
The flow is linear in the first time period with precipitation：ΔQi=arQ,i+brQ,i·ri；Wherein, Δ QiFor
The flow of the first time period, riFor the precipitation of the first time period, arQ,iAnd brQ,iFor first fitting coefficient,
arQ,iRepresent the standard flow of the first time period, brQ,iRepresent the flow precipitation related coefficient of the first time period；
Ar is obtained according to the following formulaQ,iAnd brQ,i：
Wherein, nr=b-a+1, b are the knot of the first time period
The beam time, at the beginning of a is the first time period, nrTime span for the first time period；
The precipitation to the second time period carries out linear fit with the flow, obtains the second fitting system
Number, including：
The flow and precipitation are linear in the second time period：ΔQi'=aeQ,i+beQ,i·ri'；Wherein, Δ
Qi' be the second time period flow, ri' be the second time period precipitation；aeQ,iAnd beQ,iFor the described second fitting
Coefficient, aeQ,iFor the standard flow of the second time period, beQ,iFlow precipitation related coefficient for the second time period；
Ae is obtained according to the following formulaQ,iAnd beQ,i：
Wherein, ne=d-c+1, d are second time
The end time of section, at the beginning of c is the second time period, neTime span for the second time period.
5. the according to the method described in claim 2, it is characterized in that, hydrology in the river to be evaluated of the acquisition set period of time
Parameter is acquired according to the moon, and the precipitation to the first time period carries out linear fit with the flow,
First fitting coefficient is obtained, including, including：
The flow and jth year of the precipitation in the first time period are linear：ΔQi,j=arQ,i,j+
brQ,i,j·ri,j；Wherein, Δ Qi,jFor the flow in jth year in the first time period, ri,jFor jth year in the first time period
Precipitation, arQ,i,jAnd brQ,i,jFor Δ Qi,jWith ri,jIn the fitting coefficient in jth year, arQ,i,jIt is in the first time period
The standard flow of j, brQ,i,jFlow precipitation related coefficient for the jth year in first time period；
Δ Q is determined according to the following formulai,jWith ri,jIn the fitting coefficient ar in jth yearQ,i,jAnd brQ,i,j：
The first fitting coefficient ar is determined according to the following formulaQ,iAnd brQ,i；
Wherein, nr=b-a+1, b are the end of the first time period
Time, at the beginning of a is the first time period, nrTime span for the first time period；
The precipitation to the second time period carries out linear fit with the flow, obtains the second fitting system
Number, including：
Flow and jth ' year of the precipitation in the second time period are linear：ΔQ'i,j'=ae'Q,i,j'+be
'Q,i,j'·r'i,j'；Wherein, Δ Q'i,j'For the flow in jth ' year in the second time period, r'i,j'For the second time period
The precipitation in middle jth ' year；ae'Q,i,j'And be'Q,i,j'For Δ Q'i,j'And r'i,j'Jth ' year is fitted in the second time period
Coefficient, ae'Q,i,j'Represent the standard flow in jth ' year in the second time period, be'Q,i,j'It is in the second time period
The flow precipitation related coefficient of j'；
Δ Q' is determined according to the following formulai,j'With r'i,j'The fitting coefficient in jth ' year in the second time period
ae'Q,i,j'And be'Q,i,j'：
Second fitting coefficient of the second time period is determined according to the following formula：
Wherein, ne=d-c+1, d are the second time period
End time, at the beginning of c is the second time period, neTime span for the second time period.
6. the according to the method described in claim 3, it is characterized in that, hydrology in the river to be evaluated of the acquisition set period of time
Parameter is acquired according to year, is carried out linear fit to the water temperature and the temperature of the first time period, is obtained institute
Third fitting coefficient is stated, including：
The water temperature is in a linear relationship in the first time period with the temperature：ΔTi=arT,i+brT,i·ti；Wherein, Δ Ti
For the water temperature of the first time period, tiFor the temperature of the first time period, arT,iAnd brT,iFor the third fitting coefficient,
arT,iFor the fiducial temperature of the first time period, brT,iWater temperature and air temperature related coefficient for the first time period；
The third fitting coefficient ar is obtained according to the following formulaT,iAnd brT,i：
Wherein nr=b-a+1, b are the end of the first time period
Time, at the beginning of a is the first time period, nrTime span for the first time period；
Linear fit is carried out to the water temperature and the temperature of the second time period, the 4th fitting coefficient is obtained, wraps
It includes：
The water temperature is in a linear relationship in the second time period with the temperature：ΔTi'=aeT,i+beT,i·ti'；Wherein, Δ
Ti' be the second time period water temperature, ti' be the second time period temperature, aeT,iAnd beT,iIt is fitted for the third and is
Number, aeT,iFor the fiducial temperature of the second time period, beT,iWater temperature and air temperature related coefficient for the second time period；
Ae is obtained according to the following formulaT,iAnd beT,i：
Wherein, ne=d-c+1, d are the second time period
End time, c be the period at the beginning of, neTime span for the second time period.
7. the according to the method described in claim 3, it is characterized in that, hydrology in the river to be evaluated of the acquisition set period of time
Parameter is acquired according to the moon, and the water temperature to the first time period carries out linear fit with the temperature, obtains
To the third fitting coefficient, including：
The water temperature and jth year of the temperature in the first time period are linear：ΔTi,j=arT,i,j+
brT,i,j·ti.j；Wherein, Δ Ti,jFor the water temperature in jth year in the first time period, ti.jFor jth year in the first time period
Temperature, arT,i,jAnd brT,i,jFor Δ Ti,jWith ti.jThe fitting coefficient in jth year, ar in the first time periodT,i,jIt is described
The benchmark water temperature in jth year, br in first time periodT,i,jWater temperature and air temperature related coefficient for the jth year in the first time period；
Δ T is determined according to the following formulai,jWith ti.jThe fitting coefficient ar in jth year in the first time periodT,i,jAnd brT,i,j：
The third fitting parameter ar of the first time period is determined according to the following formulaT,iAnd brT,i；
Wherein nrAt the end of=b-a+1, b are the first time period
Between, at the beginning of a is the first time period, nrTime span for the first time period；
The water temperature to the second time period carries out linear fit with the temperature, obtains the 4th fitting system
Number, including：
Jth ' the year in the second time period is linear with the temperature for the water temperature：ΔT'i,j'=ar'T,i,j'+
br'T,i,j'·t'i.j'；Wherein, Δ T'i,j'The flow in jth ' year, t' in the second time periodi.j'For the second time period
The precipitation in middle jth ' year；ar'T,i,j'And br'T,i,j'For Δ T'i,j'And t'i.j'Jth ' year is fitted in the second time period
Coefficient, ar'T,i,j'Represent the standard flow in jth ' year in the second time period, br'T,i,j'It represents in the second time period
The flow precipitation related coefficient in jth ' year；
Δ T' is determined according to the following formulai,j'With t'i.j'The fitting coefficient in jth ' year in the second time period
ar'T,i,j'And br'T,i,j'：
The 4th fitting parameter ae of the second time period is determined according to the following formulaT,iAnd beT,i：
Wherein, ne=d-c+1, d are the second time period
End time, at the beginning of c is the period, neTime span for the second time period.
8. method according to claim 4 or 5, which is characterized in that described according to first fitting coefficient, described second
The daily average water discharge of fitting coefficient and the river to be evaluated determines flow variation of the river to be evaluated in the setting time
Coefficient, including：
Work as arQ,iWhen=0, the flow coefficient of variation in the setting time is determined according to the following formula：
Work as arQ,iWhen ≠ 0, the flow coefficient of variation in the setting time is determined according to the following formula：
Wherein,Daily average water discharge for the river to be evaluated.
9. the method described according to claim 6 or 7, which is characterized in that described according to the third fitting coefficient, the described 4th
The average temperature of fitting coefficient and the river to be evaluated determines water temperature variation of the river to be evaluated in the setting time
Coefficient, including：
The water temperature coefficient of variation in the setting time is determined according to the following formula：
Wherein, TEiFor the water temperature of the second time period, TRiFor institute
The water temperature of first time period is stated,Average daily water temperature for river to be evaluated.
10. according to the method described in claim 9, it is characterized in that, the water of the second time period is calculated according to the following formula
Warm TEiWith the water temperature T R of the first time periodi：
Temperature on average for the second time period；
Temperature on average for the first time period.
It is 11. according to the method described in claim 1, it is characterized in that, described according to the flow coefficient of variation and the water
The warm coefficient of variation evaluates the river to be evaluated, including：
The flow coefficient of variation and the water temperature coefficient of variation are subjected to average summation, obtain the hydrologic parameter in the river to be evaluated
Coefficient；
It is closed according to the mapping of the hydrologic parameter coefficient and the hydrologic parameter coefficient to prestore and the Health Category in river to be evaluated
System determines the Health Category in the river to be evaluated.
12. a kind of evaluating apparatus of river health, which is characterized in that including：
Acquisition module, for acquiring the hydrologic parameter in the river to be evaluated of set period of time, the hydrologic parameter includes described treat
Flow, water temperature, precipitation and the temperature in river are evaluated, the set period of time includes first time period and second time period；
Fitting module, for the first setting relationship of the flow according to the set period of time and precipitation, during to described first
Between the flow of section be fitted with precipitation, obtain the first fitting coefficient；To the flow of the second time period and precipitation into
Row fitting, obtains the second fitting coefficient；
And according to the water temperature of the set period of time and the second setting relationship of temperature, to the water temperature of the first time period
It is fitted with temperature, obtains third fitting coefficient；The water temperature and temperature of the second time period are fitted, obtain the 4th
Fitting coefficient；
Determining module, for the day according to first fitting coefficient, second fitting coefficient and the river to be evaluated
Equal flow determines the flow coefficient of variation of the river to be evaluated in the set period of time；
And the average temperature according to the third fitting coefficient, the 4th fitting coefficient and the river to be evaluated, really
Fixed river to be evaluated is in the water temperature coefficient of variation of the set period of time；
Evaluation module, for being carried out according to the flow coefficient of variation and the water temperature coefficient of variation to the river to be evaluated
Health Category is evaluated.
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