CN113723856A - Method, system, equipment and medium for calculating water demand of river in ecological sensitive period - Google Patents

Method, system, equipment and medium for calculating water demand of river in ecological sensitive period Download PDF

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CN113723856A
CN113723856A CN202111057597.XA CN202111057597A CN113723856A CN 113723856 A CN113723856 A CN 113723856A CN 202111057597 A CN202111057597 A CN 202111057597A CN 113723856 A CN113723856 A CN 113723856A
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许衡
黄亮
罗昊
李侃
邵伟
车银伟
马颖怡
文小平
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Scientific Institute Of Pearl River Water Resources Protection
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Abstract

The invention discloses a method, a system, equipment and a medium for calculating water demand in an ecological sensitive period of a river. The method for calculating the water demand in the river ecological sensitive period comprises the following steps: collecting basic investigation data and determining an ecological sensitive period; analyzing hydrological characteristics based on the ecological sensitive period; drawing a daily flow process line generalized in an ecological sensitive period according to an ecological adaptability principle; and calculating the ecological water demand of the sensitive period according to the daily flow process line. The water demand calculation system for the river ecological sensitive period comprises: the acquisition module is used for acquiring basic survey data and determining an ecological sensitive period; the analysis module is used for analyzing the hydrological characteristics based on the ecological sensitive period; the drawing module is used for drawing a daily flow process line generalized in an ecological sensitive period according to an ecological adaptability principle; the analysis module is also used for calculating the ecological water demand of the sensitive period according to the daily flow process line. The invention also provides equipment and a medium for realizing the method for calculating the water demand in the ecological sensitive period of the river.

Description

Method, system, equipment and medium for calculating water demand of river in ecological sensitive period
Technical Field
The invention relates to the technical field of ecological environment protection, in particular to a method, a system, equipment and a medium for calculating water demand in an ecological sensitive period of a river.
Background
At present, the common methods for calculating the ecological water requirement of rivers can be classified into a hydrological method, a hydraulic method, a habitat method, an integral method and the like. The hydrology method is the most common method in river ecological water demand calculation, and the ecological water demand is determined through statistical calculation according to historical hydrological observation data. The hydraulics method links the change of the river runoff with the hydraulics characteristics of the river cross section and is used for calculating the ecological water demand. The habitat method combines the change of river channel flow with the selection trend of the habitat of specific species, determines the available habitat area under a certain flow, draws a relation curve of the habitat area and the river channel flow, and determines the appropriate river channel flow according to the maximum habitat area. The integral analysis method starts from the ecological environment of a research area integrally, considers rivers as a comprehensive system, and comprises various water demands including sources, riverways, riverbank zones, flood plains, underground water, swamps and river mouths.
The requirement of maintaining the river health fully reflects the requirement of river ecological water demand in water resource planning and management, and the water consumption of the river ecological environment is heavily considered in combination with the development of social economy. Flood pulse is an important ecological hydrologic requirement of many fishes in the sensitive period of propagation, and has high ecological protection value for the runoff process line research in the sensitive period. The hydrology method and the hydraulics method are used for calculating based on historical hydrology observation data or observation section hydraulics parameters and flow relation, operability is high, and related ecological significance is not considered in selection of calculation parameters. The habitat simulation method and the habitat synthesis method are suitable for rivers with hydrological observation and ecological monitoring data, and the ecological water demand calculation process is complex. The method for calculating the ecological water demand of river sensitive period of the river segment with the floating egg fish and the egg field thereof has less research.
Disclosure of Invention
Based on the above, the invention aims to provide a method, a system, equipment and a medium for calculating the water demand of a river in an ecological sensitive period.
In a first aspect, the invention provides a method for calculating water demand in a river ecological sensitive period, which comprises the following steps:
collecting basic investigation data and determining an ecological sensitive period;
analyzing hydrological characteristics based on the ecological sensitive period;
drawing a daily flow process line generalized in an ecological sensitive period according to an ecological adaptability principle;
and calculating the ecological water demand of the sensitive period according to the daily flow process line.
In one embodiment, the basic survey data includes: hydrological data of long-time sequences of river hydrological sites, fish community structure, population scale, and ecological niche and ecological habits of tagged fish.
In one embodiment, the analyzing the hydrological features includes: and analyzing the runoff fluctuation change characteristics of the ecological sensitive period.
In one embodiment of the above technical solution, the runoff fluctuation variation characteristics include runoff rising characteristics and runoff falling characteristics;
wherein the runoff rising feature comprises: the runoff growth rate, the accumulated runoff rising time and the average runoff rising time;
the runoff lowering feature comprises: runoff decline rate, cumulative runoff decline time, average runoff decline time.
In one embodiment, the drawing a daily traffic process line with an ecological sensitivity period generalized according to the ecological adaptability principle includes: according to the characteristic analysis of the runoff fluctuation change in the ecological sensitive period and in combination with the early-stage resource distribution rule of fishes, the parameter settings of the initial flow, the runoff rising/falling rate and the flow rising/falling duration in the ecological sensitive period are determined, and the generalized day-by-day flow process line in the ecological sensitive period is drawn along with the time evolution.
In an embodiment of the foregoing technical solution, the calculating the ecological water demand of the sensitive period includes: and calculating the water demand of the river in the ecological sensitive period through the envelope area.
In one embodiment, the method further includes: and (5) carrying out statistical analysis on the monthly average flow to make a water quantity scheduling plan.
In a second aspect, the present invention provides a system for calculating water demand of a river in an ecological sensitive period, comprising:
the acquisition module is used for acquiring basic survey data and determining an ecological sensitive period;
the analysis module is used for analyzing the hydrological characteristics based on the ecological sensitive period;
the drawing module is used for drawing a daily flow process line generalized in an ecological sensitive period according to an ecological adaptability principle;
the analysis module is also used for calculating the ecological water demand of the sensitive period according to the daily flow process line.
In a third aspect, the present invention provides an apparatus comprising:
a memory for storing one or more programs;
and the processor is used for operating the program stored in the memory so as to realize the method for calculating the water demand of the river in the ecological sensitive period.
In a fourth aspect, the present invention further provides a computer-readable storage medium storing at least one program which, when executed by a processor, implements the method for calculating the water demand of a river during an eco-sensitive period as described in any one of the above.
Compared with the prior art, the method has the advantages that the basic survey data are collected, the ecological sensitive period is determined, the hydrological characteristics are analyzed, the generalized day-by-day flow process line of the ecological sensitive period is drawn, and the ecological water demand of the sensitive period is calculated.
For a better understanding and practice, the invention is described in detail below with reference to the accompanying drawings.
Drawings
FIG. 1 is an exemplary block diagram of a river eco-sensitive water demand calculation system of the present invention.
Fig. 2 is an exemplary flow chart of the method for calculating the water demand of the river in the ecological sensitive period of the invention.
FIG. 3 is a generalized flow process line of 5-8 months ecological sensitivity period of each station.
Fig. 4 is an ecological flow process line and a flow process line at different cumulative frequencies.
Detailed Description
The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
The invention aims to provide a method for calculating the water demand of a river in an ecological sensitive period by combining ecological adaptability and hydrological analysis. From the perspective of ecological hydrology, hydrologic observation data are taken as the basis, fish early resource investigation results are combined, the flow process line of the fish ecological sensitive period is generalized and drawn through characteristic values, and then the ecological water demand of the river sensitive period is calculated. The invention solves the problem of how to calculate the ecological water demand of the fishes producing drifting eggs in the sensitive period, and can provide a valuable reference index for developing ecological scheduling, coordinating people and ecological water contradiction.
Referring to fig. 1, fig. 1 is an exemplary block diagram of a system for calculating water demand in a river ecological sensitive period according to the present invention.
In a first aspect, the present invention provides a system for calculating water demand of a river in an ecological sensitive period, comprising:
s1, an acquisition module is used for acquiring basic survey data and determining an ecological sensitive period.
And S2, an analysis module for analyzing the hydrological characteristics based on the ecological sensitive period.
And S3, a drawing module for drawing daily flow process lines with a generalized ecological sensitivity period according to an ecological adaptability principle.
The analysis module is also used for calculating the ecological water demand of the sensitive period according to the daily flow process line.
Referring further to fig. 2, fig. 2 is a block diagram illustrating an exemplary flow chart of the method for calculating the water demand of the river during the ecological sensitive period of the present invention.
In a second aspect, the present invention provides a method for calculating water demand in a river ecological sensitive period, which can be implemented by the system for calculating water demand in a river ecological sensitive period of the present invention, and specifically includes:
step 101, collecting basic survey data and determining an ecological sensitive period.
Specifically, the basic survey data includes: hydrological data of long-time sequences of river hydrological sites, fish community structure, population scale, and ecological niche and ecological habits of tagged fish.
The above step 101 can be implemented by the acquisition module.
Step 102, analyzing hydrological characteristics based on the ecological sensitive period.
The analysis of the hydrological features comprises:
and analyzing the runoff fluctuation change characteristics of the ecological sensitive period.
The runoff rising and falling change characteristics comprise runoff rising characteristics and runoff falling characteristics.
Wherein the runoff rising feature comprises: the runoff growth rate, the accumulated runoff rising time and the average runoff rising time.
The runoff lowering feature comprises: runoff decline rate, cumulative runoff decline time, average runoff decline time.
The above step 102 may be implemented by the analysis module.
And 103, drawing a daily flow process line of the ecological sensitivity period generalization according to the ecological adaptability principle.
The step 103 of drawing a daily traffic process line with an ecological sensitivity period generalized according to the ecological adaptability principle includes: according to the characteristic analysis of the runoff fluctuation change in the ecological sensitive period and in combination with the early-stage resource distribution rule of fishes, the parameter settings of the initial flow, the runoff rising/falling rate and the flow rising/falling duration in the ecological sensitive period are determined, and the generalized day-by-day flow process line in the ecological sensitive period is drawn along with the time evolution.
The above step 103 can be implemented by the drawing module.
And step 104, calculating the ecological water demand of the sensitive period according to the daily flow process line.
Specifically, the calculating the ecological water demand of the sensitive period comprises the following steps: and calculating the water demand of the river in the ecological sensitive period through the envelope area.
The above step 104 may be implemented by the analysis module.
And step 105, carrying out statistical analysis on the monthly average flow rate, and making a water quantity scheduling plan.
The above step 105 may be implemented by the analysis module.
In order to more conveniently understand the concrete principle of the method for calculating the water demand of the river in the ecological sensitive period, the invention is explained by taking the red water river migrating to the river, Wuxuan and Wuzhou as three hydrological stations as a case.
Step 201, collecting basic survey data of three hydrological stations of the red water river migratory river, Wuxuan and Wuzhou, and determining an ecological sensitive period.
Step 202, analyzing hydrological characteristics of three hydrological stations of the red water river migrating river, Wuxuan and Wuzhou based on the ecological sensitive period. The method specifically comprises the following steps:
based on the flow data (table 1) of the river hydrologic site long time series (more than 30 years), hydrologic characteristic parameters were determined: selecting hydrological characteristic parameters such as average base flow, base flow index, average runoff, runoff accumulation value, runoff increasing/decreasing rate, accumulated runoff rising/decreasing time, average runoff rising/decreasing time and the like (table 2).
Figure BDA0003255308080000071
TABLE 1 hydrological data information sheet
Figure BDA0003255308080000072
TABLE 2 hydrologic characteristic parameter List
Step 2021, analyzing runoff rising characteristics of the ecological sensitive period.
The breeding period of various fishes (such as the four big Chinese carps) producing drifting eggs in the red river basin is basically completed in 5-8 months. The increase of river flow and flow rate in the breeding period is one of hydrologic conditions required for finishing the breeding process of the fishes laying driftage eggs (Zhang Xiaomin et al 2009, Chenyongbai et al 2009). According to literature reports, the total rising water day number of 5-6 months is an important hydrologic characteristic parameter influencing the spawning of the four Chinese carps, and the river starting amount of roe fries is generally in direct proportion to the time length (Li 32704equi 2006. And (3) statistically analyzing the runoff rising rate, the accumulated runoff rising time and the average runoff rising time of the three hydrological stations in 5-8 months year by year, and calculating the accumulated frequency values of 5%, 25%, 50%, 75% and 95% of each month.
a. And analyzing the runoff growth rate.
The migrating hydrological station is the lowest in month 5, closer in months 6 and 7, and the median values in months 4 are 250.8, 969.0, 817.1 and 535.7m3/(s day). The change amplitude of the 7 months is maximum, and the maximum value of the runoff growth rate is close to 2500m3/(s·day)。
The Wuxuan hydrological station is lower in months 5 and 8 and higher in months 6 and 7, and the median values of the months 4 are 1038.0, 2328.5, 1474.3 and 820.7m3/(s day). The runoff rising rate of 6 months is integrally higher; the variation amplitude of the 7 months is maximum, and the maximum value of the runoff growth rate is close to 5000m3/(s day). The runoff growth rate of the Wuxuan hydrological station in the months of 5-8 is greater than that of the river-moving hydrological station.
The Stercury hydrology stations are lower in months 5 and 8, higher in months 6 and 7, with the median values of 4 months being 997.5, 1737.8, 1271.3 and 877.6m, respectively3/(s day). The runoff rising rate of 6 months is integrally higher; the variation amplitude of the 7 months is maximum, and the maximum value of the runoff growth rate exceeds 6000m3/(s day). The runoff growth rate of the Sterculia hydrology station in 5-8 months is greater than that of the migrant hydrology station but less than that of the Wuxuan hydrology station.
b. And analyzing the rising time of the accumulated runoff.
The median of each month of the migration hydrological station in 5-8 months is 15.0, 12.5, 11.0 and 12.0 days respectively, the median of each month of the Wuxuan hydrological station is 12.0, 11.0 and 11.0 days respectively, the median of each month of the Wuzhou hydrological station is 13.0, 11.0 and 12.0 days respectively, namely the cumulative runoff rise time of more than 50% of 4 months in a year exceeds 10 days. The cumulative runoff rising time of the three hydrological stations in the months 5 and 6 is slightly higher than that in the months 7 and 8, which is beneficial to stimulating fishes to produce drifting eggs.
c. The mean runoff rise time was analyzed.
The median of the migrating river stations in 5-8 months is relatively close to that in each month, and the median is respectively 2.8 days, 2.4 days and 3.0 days. In designing an ecological flow process line, a time length of 3 days may be selected as a basic step size.
The Wuxuan station is 5-8 months, the median value of each month is relatively close, and the days are 2.5, 2.8 and 3.0 days respectively. In designing an ecological flow process line, a time length of 3 days may be selected as a basic step size.
The Chinese parasol station is 5-8 months, the median value of each month is close, namely 3.3, 3.5, 3.3 and 3.7 days, which are higher than the Wuxuan hydrology station. The rising cumulative time for month 8 has the largest amplitude of change.
Step 2022, analyzing runoff decline characteristics of the ecologically sensitive period.
And counting the runoff decreasing rate, the accumulated runoff decreasing time and the average runoff decreasing time of the three hydrological stations in 5-8 months year by year, and respectively calculating the accumulated frequency values of 5%, 25%, 50%, 75% and 95% of each month data set.
a. The runoff decline rate was analyzed.
Migrating hydrologic stations in months 5-8, wherein month 5 is the lowest, months 6 and 7 are closer, and the median values of months 4 are 166.7, 515.5, 502.9 and 357.4m respectively3/(s day). The variation range of the 7 months is relatively large, and the maximum value of the runoff rate of descent exceeds 1800m3/(s·day)。
The Wuxuan hydrologic station in months 5-8, the months 5 and 8 are lower, the months 6 and 7 are higher, and the median values of the months 4 are 589.2, 1242.0, 987.4 and 521.4m respectively3/(s day). The runoff decline rate for 6 months is overall higher; the range of 7 months is relatively large. The runoff decline rate of the Wuxuan hydrological station in 5-8 months is greater than that of the river-moving hydrological station.
The Chinese parasol stations in 5-8 months are low in 5 months and 8 months and high in 6 months and 7 months, and the median values of 4 months are 640.0, 973.3, 995.6 and 709.8m3/(s day). The runoff decline rates for months 6 were distributed relatively closely over months 7. The runoff decline rate of the Sterculia hydrology station in 5-8 months is greater than that of the migrant hydrology station, and the runoff decline rate of 6 months is less than that of the Wuxuan hydrology station.
b. Cumulative runoff decline time was analyzed.
In months 5-8, the median values of the migrating hydrology stations in each month are 15, 16.5, 19 and 18 days respectively, the median values of the Wuxuan hydrology stations in each month are 18, 17, 19 and 19 days respectively, and the median values of the Sterculia hydrology stations in each month are 17.0, 16.0, 19.0 and 18.0 days respectively. The cumulative runoff descending time of each month of the three hydrological stations exceeds 15 days, and the cumulative runoff descending time is longer than the runoff ascending time.
c. The mean runoff decay time was analyzed.
And 5-8 months of the migrating river stations, wherein the median value gradually increases along with the passage of the months and is respectively 2.8 days, 3.6 days, 4.2 days and 4.3 days. When designing an ecological flow process line, the method can be used as the basis of the basic time step.
The Wuxuan station is 5-8 months, the median value rises first and then falls along with the lapse of the months, and the median value is 3.5 days, 3.8 days, 5.0 days and 4.2 days respectively. When designing an ecological flow process line, different months should select different basic time step lengths.
The wuzhou station is 5-8 months, the median value rises first and then falls along with the passing of the month, the wushu station is similar to the wushu station, the median values are 3.8, 4.3, 5.5 and 4.5 days respectively, and the whole wushu station is larger than the wushu station.
The average single runoff descending time of each hydrological station is larger than the average single runoff rising time.
And step 203, drawing a daily flow process line of the ecological sensitivity period generalization according to the ecological adaptability principle.
Parameter selection: the average flow of the 4 months with the accumulation frequency of 50% is selected as the initial flow, the rise/fall time of the runoff with the accumulation frequency of 50% of each month and the rise/fall time of the single runoff are selected as the rise/fall time parameters, and the sum of the days of rise and fall of each month is just equal to the days of the corresponding month. The minimum value of single runoff rising/falling time is determined as 3 days, and the value of 75% cumulative frequency line is selected as the average runoff rising/falling rate in view of the lack of related research data. The runoff rising parameter and the runoff falling parameter are shown in a table 3.
Figure BDA0003255308080000101
Figure BDA0003255308080000111
TABLE 3 fluctuation parameter setting table for runoff process line of each hydrological station
Note: 1. the initial flow selects the 4 month runoff 50% cumulative frequency value.
2. The total days and the single days are respectively selected from the accumulated time of the rise/fall of the runoff and the 50 percent accumulated frequency value of the average single runoff rise/fall time.
3. The unit of "average rate" is "m3V (s day) ", and a 75% cumulative frequency value for the mean runoff rise/fall rate was selected.
Drawing a generalized flow process line: according to the parameter settings of table 2, generalized daily traffic process lines for months 5-8 of the three sites ecosensitive period (fig. 3), monthly traffic process lines and corresponding sites 25, 50 and 75% cumulative frequency lines (fig. 4) are plotted.
And step 204, calculating the ecological water demand of the sensitive period according to the daily flow process line.
And according to the drawn daily flow process line, calculating the monthly average runoff of each hydrological station and the corresponding ecological water demand. Referring to the average flow of 50% of the years in the flood season recommended by the Tennant method as a 'satisfactory' ecological flow standard (see table 4 for details), calculating the ecological runoff of the sensitive period of each hydrological station in 9-10 months, and calculating the ecological water demand corresponding to river migration, Wuxuan and Wuzhou in 5-10 months (table 5).
Figure BDA0003255308080000121
TABLE 4 river discharge Condition criteria Table for conservation of Fish, wildlife, recreation and related environmental resources
Figure BDA0003255308080000131
TABLE 5 month-by-month sensitive ecological runoff and water demand meter
Injecting: and (4) referring to the annual average flow rate of 50% of the flood season recommended by the Tennant method as a 'satisfactory' ecological flow rate standard (see the table 4 in detail), and calculating to obtain the ecological runoff rate of the sensitive period of each hydrological station in 9-10 months.
It should be noted that the invention is completely different from the published 'research on sensitive ecological water demand of Xijiang dry flow' in technical methods and basic data.
The technical method of 'research on sensitive ecological water demand of dry flow in Xijiang river' is simple, and directly calculates single appropriate flow (1722 m of migrant river) according to single appropriate water flow speed (0.55m/s) and 'flow-flow velocity relation curve' of river3S, Wuzhou 5213m3S) and then converted into sensitive ecological water demand (183 hundred million m in the river) according to the number of days3575 hundred million meters in Sterculia3)。
The invention selects parameter values and draws a generalized flow process line of an ecological sensitive period according to the ecological adaptability principle by analyzing the fluctuation characteristics (fluctuation rate, average single fluctuation time, fluctuation accumulated time and the like) of long-series daily flow data, thereby calculating the sensitive ecological water demand.
In a third aspect, the present invention provides an apparatus comprising:
a memory for storing one or more programs;
and the processor is used for operating the program stored in the memory so as to realize the method for calculating the water demand of the river in the ecological sensitive period.
The device may also preferably include a communication interface for communicating with external devices and for interactive transmission of data.
It should be noted that the memory may include a high-speed RAM memory, and may also include a nonvolatile memory (nonvolatile memory), such as at least one disk memory.
In a specific implementation, if the memory, the processor and the communication interface are integrated on a chip, the memory, the processor and the communication interface can complete mutual communication through the internal interface. If the memory, the processor and the communication interface are implemented independently, the memory, the processor and the communication interface may be connected to each other through a bus and perform communication with each other.
In a fourth aspect, the present invention further provides a computer-readable storage medium storing at least one program which, when executed by a processor, implements the method for calculating the water demand of a river during an eco-sensitive period as described in any one of the above.
It should be appreciated that the computer-readable storage medium is any data storage device that can store data or programs which can thereafter be read by a computer system. Examples of the computer readable storage medium include read-only memory, random-access memory, CD-ROMs, HDDs, DVDs, magnetic tapes, optical data storage devices, and the like. The computer readable storage medium can also be distributed over network coupled computer systems so that the computer readable code is stored and executed in a distributed fashion.
Program code embodied on a computer readable storage medium may be transmitted using any appropriate medium, including but not limited to: wireless, wire, fiber optic cable, Radio Frequency (RF), etc., or any suitable combination of the foregoing.
In some embodiments, the computer-readable storage medium may be non-transitory.
Compared with the prior art, the method has the advantages that the basic survey data are collected, the ecological sensitive period is determined, the hydrological characteristics are analyzed, the generalized day-by-day flow process line of the ecological sensitive period is drawn, and the ecological water demand of the sensitive period is calculated.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention.

Claims (10)

1. A method for calculating water demand of a river in an ecological sensitive period is characterized by comprising the following steps:
collecting basic investigation data and determining an ecological sensitive period;
analyzing hydrological characteristics based on the ecological sensitive period;
drawing a daily flow process line generalized in an ecological sensitive period according to an ecological adaptability principle;
and calculating the ecological water demand of the sensitive period according to the daily flow process line.
2. The method for calculating the water demand of the river in the ecological sensitive period according to claim 1, wherein the basic survey data comprises: hydrological data of long-time sequences of river hydrological sites, fish community structure, population scale, and ecological niche and ecological habits of tagged fish.
3. The method for calculating the water demand of the river in the ecological sensitive period according to claim 2, wherein the analyzing the hydrologic features comprises: and analyzing the runoff fluctuation change characteristics of the ecological sensitive period.
4. The method for calculating the water demand of the river in the ecological sensitive period according to claim 3, wherein the runoff fluctuation change characteristics comprise runoff rising characteristics and runoff falling characteristics;
wherein the runoff rising feature comprises: the runoff growth rate, the accumulated runoff rising time and the average runoff rising time;
the runoff lowering feature comprises: runoff decline rate, cumulative runoff decline time, average runoff decline time.
5. The method for calculating the water demand of the river in the ecological sensitive period according to claim 4, wherein the step of drawing the daily flow process line of the ecological sensitive period generalization according to the ecological adaptability principle comprises the following steps: according to the characteristic analysis of the runoff fluctuation change in the ecological sensitive period and in combination with the early-stage resource distribution rule of fishes, the parameter settings of the initial flow, the runoff rising/falling rate and the flow rising/falling duration in the ecological sensitive period are determined, and the generalized day-by-day flow process line in the ecological sensitive period is drawn along with the time evolution.
6. The method for calculating the water demand of the river in the ecological sensitive period according to the claim 5, wherein the calculating the ecological water demand of the sensitive period comprises the following steps: and calculating the water demand of the river in the ecological sensitive period through the envelope area.
7. The method for calculating the water demand of the river in the ecological sensitive period as claimed in claim 6, wherein the method further comprises: and (5) carrying out statistical analysis on the monthly average flow to make a water quantity scheduling plan.
8. A system for calculating water demand of a river in an ecological sensitive period is characterized by comprising:
the acquisition module is used for acquiring basic survey data and determining an ecological sensitive period;
the analysis module is used for analyzing the hydrological characteristics based on the ecological sensitive period;
the drawing module is used for drawing a daily flow process line generalized in an ecological sensitive period according to an ecological adaptability principle;
the analysis module is also used for calculating the ecological water demand of the sensitive period according to the daily flow process line.
9. An apparatus, comprising:
a memory for storing one or more programs;
a processor for operating the program stored in the memory to implement the method for calculating the water demand of river ecological sensitive period according to any one of claims 1 to 7.
10. A computer-readable storage medium storing at least one program, wherein the program, when executed by a processor, implements the river ecology sensitive period water demand calculation method according to any one of claims 1 to 7.
CN202111057597.XA 2021-09-09 2021-09-09 Method, system, equipment and medium for calculating water demand of river in ecological sensitive period Pending CN113723856A (en)

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