CN104649414A - Method and system for determining protection width of ecological filter strip - Google Patents
Method and system for determining protection width of ecological filter strip Download PDFInfo
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- CN104649414A CN104649414A CN201510017656.9A CN201510017656A CN104649414A CN 104649414 A CN104649414 A CN 104649414A CN 201510017656 A CN201510017656 A CN 201510017656A CN 104649414 A CN104649414 A CN 104649414A
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- sampling spot
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Abstract
The invention provides a method and a system for determining protection width of an ecological filter strip. The method comprises the following steps: selecting a plurality of sample plots from the ecological filter strip, and selecting a plurality of sampling points in width direction of each sample plot; under an inflow condition, performing water sample collection from each sampling point, and detecting nutrient substance comprehensive removal rate of each sampling point; obtaining the distance between each sampling point and the upper edge of the ecological filter strip to obtain the width of the ecological filter strip of each sampling point, establishing a protective width model according to the width of the ecological filter strip of each sampling point and the nutrient substance comprehensive removal rate of the sampling point corresponding to the width; and determining the width of the ecological filter strip according to the protective width model. According to the method and the system for determining the protection width of the ecological filter strip, on the premise of ensuring that the ecological filter strip achieves the optimal purification function, the optimal protective width of the ecological filter strip can be reasonably and quantitatively determined, water purification is realized greatly, and the ecological benefit is effectively improved.
Description
Technical field
The present invention relates to eco-filtration band design field, particularly relate to a kind of method and system determining eco-filtration band protection width.
Background technology
The eco-filtration band of river (lake, storehouse) bank is in interlocking area, habitat, land and water, is one of Forest ecosystems important component part.Its ecologic effect mainly overall ecotope of the vegetation control water body of eco-filtration band and land reflects.Size due to the various ecological functions of eco-filtration band is subject to the impact of self structure, and therefore the width of eco-filtration band is one of important factor affecting its ecologic effect.Research in the past finds that the effect of buffer strip becomes positive correlation with width.But different areas limit by factors such as landform, weather, hydrothermal condition and economic situations, and the width of buffer strip can not be built according to maximum width.Therefore, in order to solve ecological functions maximize and configuration width between contradiction, seek a kind of determine accurately and efficiently eco-filtration band protection width method be extremely necessary, also have more reasonableness.
In the prior art, the defining method of river (lake, storehouse) bank eco-filtration band protection width is only that the convenient width of eco-filtration band is roughly divided into several district, and neither one is unified and accurate method of calculation are determined to protect width.Existing method cannot meet the current computation requirement to river (lake, storehouse) bank eco-filtration band Ecosystem Service Value amount.
Summary of the invention
In view of the above problems, propose the present invention in case provide a kind of overcome the problems referred to above or solve at least in part or slow down the problems referred to above determination eco-filtration band protection width method and determine that eco-filtration band protects the system of width accordingly.
According to an aspect of the present invention, provide a kind of method determining eco-filtration band protection width, the method comprises:
Eco-filtration band is chosen some pieces of sample ground, the width on every block sample ground chooses several sampling spots;
Coming under water condition, carrying out water sampling at each sampling spot place, detecting the comprehensive clearance of nutritive substance of each sampling spot;
Obtain the distance of each sampling spot to described eco-filtration band upper limb, obtain the eco-filtration bandwidth of each sampling spot, set up according to the comprehensive clearance of nutritive substance of the eco-filtration bandwidth of each sampling spot sampling spot corresponding with this width and protect width model;
According to described protection width model determination eco-filtration band protection width.
Preferably, described come water condition specifically comprise natural rainfall, rainmaking and/or slope top pour water.
Preferably, described method also comprises:
Detect the starting point concentration of the various nutritive substances of each sampling spot.
Preferably, describedly coming under water condition, detecting the comprehensive clearance of nutritive substance of each sampling spot, specifically comprise:
Coming under water condition, detecting the concentration of the various nutritive substances of each sampling spot after bath;
Calculate the clearance of often kind of nutritive substance of each sampling spot respectively according to the concentration of the various nutritive substances of each sampling spot after the starting point concentration of the various nutritive substances of each sampling spot described and described bath, concrete formula is as follows:
Wherein, x
ifor the clearance of nutritive substance i, %, V
0for the starting point concentration of nutritive substance i, unit: mg/L, V are the concentration of nutritive substance after bath, unit: mg/L;
According to the clearance of often kind of nutritive substance of each sampling spot described, calculate the comprehensive clearance of nutritive substance of each sampling spot.
Preferably, described protection width model is specific as follows;
H＝ax
2+bx+c，
Wherein, x is the comprehensive clearance of nutritive substance, unit: %; H is ecological filter bandwidth degree, unit: m, a, b and c are equal model coefficient.
According to another aspect of the present invention, provide a kind of system determining eco-filtration band protection width, this system comprises:
Sampling spot chooses unit, for choosing some pieces of sample ground on eco-filtration band, the width on every block sample ground chooses several sampling spots;
Nutritive substance clearance detecting unit, for coming under water condition, is carrying out water sampling at each sampling spot place, detects the comprehensive clearance of nutritive substance of each sampling spot;
Protection width model sets up unit, for obtaining the distance of each sampling spot to described eco-filtration band upper limb, obtain the eco-filtration bandwidth of each sampling spot, set up according to the comprehensive clearance of nutritive substance of the eco-filtration bandwidth of each sampling spot sampling spot corresponding with this width and protect width model;
Eco-filtration band protection width determining unit, for protecting width according to described protection width model determination eco-filtration band.
Preferably, described come water condition specifically comprise natural rainfall, rainmaking and/or slope top pour water.
Preferably, described system also comprises:
Starting point concentration detecting unit, for detecting the starting point concentration of the various nutritive substances of each sampling spot.
Preferably, described nutritive substance clearance detecting unit, specifically comprises:
The concentration detection module of nutritive substance, for coming under water condition, is detecting the concentration of the various nutritive substances of each sampling spot after bath;
The clearance computing module of often kind of nutritive substance, concentration for the various nutritive substances of each sampling spot after the starting point concentration of the various nutritive substances according to each sampling spot described and described bath calculates the clearance of often kind of nutritive substance of each sampling spot respectively, and concrete formula is as follows:
Wherein, x
ifor the clearance of nutritive substance i, %, V
0for the starting point concentration of nutritive substance i, unit: mg/L, V are the concentration of nutritive substance after bath, unit: mg/L;
The comprehensive clearance computing module of nutritive substance, for the clearance of often kind of nutritive substance according to each sampling spot described, calculates the comprehensive clearance of nutritive substance of each sampling spot.
Preferably, described protection width model is specific as follows;
H＝ax
2+bx+c，
Wherein, x is the comprehensive clearance of nutritive substance, unit: %; H is ecological filter bandwidth degree, unit: m, a, b and c are equal model coefficient
Beneficial effect of the present invention is:
The present invention is under the prerequisite ensureing stability of plant community, from the angle of water body Middle nutrition material removal effect the best, reach the prerequisite of best purification function at eco-filtration band under, the eco-filtration band protection width value of determination optimum that can be rational and quantitative, improves the ecologic effect of eco-filtration band.
Above-mentioned explanation is only the general introduction of technical solution of the present invention, in order to technique means of the present invention can be better understood, and can be implemented according to the content of specification sheets, and can become apparent, below especially exemplified by the specific embodiment of the present invention to allow above and other objects of the present invention, feature and advantage.
Accompanying drawing explanation
By reading hereafter detailed description of the preferred embodiment, various other advantage and benefit will become cheer and bright for those of ordinary skill in the art.Accompanying drawing only for illustrating the object of preferred implementation, and does not think limitation of the present invention.And in whole accompanying drawing, represent identical parts by identical reference symbol.In the accompanying drawings:
A kind of schema determining the method for eco-filtration band protection width that Fig. 1 provides for the embodiment of the present invention;
Fig. 2 is that the eco-filtration band sampling spot proposed in the embodiment of the present invention chooses schematic diagram;
Fig. 3 is the single nutritive substance width model schematic diagram proposed in the embodiment of the present invention;
Fig. 4 is the comprehensive nutrient mass width model schematic proposed in the embodiment of the present invention;
Fig. 5 is the comprehensive nutrient mass width model schematic of the Hebei Mulan Paddock eco-filtration band proposed in the embodiment of the present invention; And
A kind of structural representation determining the system of eco-filtration band protection width that Fig. 6 provides for the embodiment of the present invention.
Embodiment
Be described below in detail embodiments of the invention, the example of described embodiment is shown in the drawings, and wherein same or similar label represents same or similar element or has element that is identical or similar functions from start to finish.Being exemplary below by the embodiment be described with reference to the drawings, only for explaining the present invention, and can not limitation of the present invention being interpreted as.
Those skilled in the art of the present technique are appreciated that unless expressly stated, and singulative used herein " ", " one ", " described " and " being somebody's turn to do " also can comprise plural form.Should be further understood that, the wording used in specification sheets of the present invention " comprises " and refers to there is described feature, integer, step, operation, element and/or assembly, but does not get rid of and exist or add other features one or more, integer, step, operation, element, assembly and/or their group.
Those skilled in the art of the present technique are appreciated that unless otherwise defined, and all terms used herein (comprising technical term and scientific terminology), have the meaning identical with the general understanding of the those of ordinary skill in field belonging to the present invention.Should also be understood that those terms defined in such as general dictionary, should be understood to that there is the meaning consistent with the meaning in the context of prior art, unless and by specific definitions, otherwise can not explain by idealized or too formal implication.
A kind of schema determining the method for eco-filtration band protection width that Fig. 1 provides for the embodiment of the present invention.
With reference to Fig. 1, what the embodiment of the present invention provided a kind ofly determines that the method for eco-filtration band protection width comprises the following steps:
S11, on eco-filtration band, choose some pieces of samples ground, the width on every block sample ground chooses several sampling spots;
S12, coming under water condition, carrying out water sampling at each sampling spot place, detect the comprehensive clearance of nutritive substance of each sampling spot;
S13, obtain the distance of each sampling spot to described eco-filtration band upper limb, obtain the eco-filtration bandwidth of each sampling spot, set up according to the comprehensive clearance of nutritive substance of the eco-filtration bandwidth of each sampling spot sampling spot corresponding with this width and protect width model;
S14, according to described protection width model determination eco-filtration band protection width.
Further, described come water condition specifically comprise natural rainfall, rainmaking and/or slope top pour water.
Further, the method that the determination eco-filtration band that the embodiment of the present invention proposes protects width also comprises:
Detect the starting point concentration of the various nutritive substances of each sampling spot.
In the embodiment of the present invention, some pieces of typical samples ground that eco-filtration band is chosen, excavates its surrounding, makes itself and surrounding environment separate.From on slope to 0m, h under slope
1m, h
2m, h
3m...h
nm place arranges sampling spot, under pouring water etc. and carry out water condition in natural rainfall, rainmaking or top, slope, when under slope during runoff yield, respectively at each sampling spot point water sampling, detects the starting point concentration V of each sampling spot nutritive substance
0, as shown in Figure 2, Fig. 2 is that the eco-filtration band sampling spot proposed in the embodiment of the present invention chooses schematic diagram.
Further, describedly coming under water condition, detecting the comprehensive clearance of nutritive substance of each sampling spot, specifically comprise:
Coming under water condition, detecting the concentration of the various nutritive substances of each sampling spot after bath;
Calculate the clearance of often kind of nutritive substance of each sampling spot respectively according to the concentration of the various nutritive substances of each sampling spot after the starting point concentration of the various nutritive substances of each sampling spot described and described bath, concrete formula is as follows:
Wherein, x
ifor the clearance of nutritive substance i, %, V
0for the starting point concentration of nutritive substance i, unit: mg/L, V are the concentration of nutritive substance after bath, unit: mg/L;
According to the clearance of often kind of nutritive substance of each sampling spot described, calculate the comprehensive clearance of nutritive substance of each sampling spot.
In the embodiment of the present invention, by the clearance xi of all sampling spot different in width nutritive substances and corresponding width h
iset up correlative relationship, can obtain single nutritive substance width model further, Fig. 3 is the single nutritive substance width model schematic diagram proposed in the embodiment of the present invention,
As shown in Figure 3, wherein the model of single nutritive substance and sampling spot width is specific as follows:
h
i＝a
ix
i+b
i，
Wherein, h
ifor the buffer strip width of i nutritive substance, unit: m;
A
iand b
ifor model coefficient.
Further, the clearance x of the comprehensive all nutritive substances of the embodiment of the present invention, sets up with buffer strip width H and protects width model, and as shown in Figure 4, described protection width model is specific as follows;
H＝ax
2+bx+c，
Wherein, x is the comprehensive clearance of nutritive substance, unit: %; H is ecological filter bandwidth degree, unit: m, a, b and c are equal model coefficient.
Further, by obtaining the differentiate of protection width model:
H＇＝Mx+N
Namely during H ＇=0, i.e. knee point, the width value of this point is that river (lake, storehouse) bank buffer strip reaches best purification function, protection width when namely nutritive substance removal efficiency is the highest.
Below by specific embodiment, the present invention is clearly illustrated.
The embodiment of the present invention, according to seven pieces of typical sample ground selected by the Mulan Paddock eco-filtration band of Hebei, sampling from slope to 0m, 1m, 2m, 4m, 7m, 10m under slope, is surveyed
Determine COD in water body, TP, PO
4 3--P, TN, NO
3 -the initial value of-N is in Table:
Table 1 enveloping field riparian buffer strips water quality initial value
Clearance according to measuring the rear each nutritive substance calculated sets up nutritive substance-width model, sees the following form:
Table 2 nutritive substance-width model
The clearance x of comprehensive all nutritive substances, sets up with buffer strip width H and protects width model:
H＝-0.32182x
2+8.4707x+22.524
In formula, x---nutritive substance clearance, unit: %; H---riparian buffer strips width, unit: m.
Can obtain the differentiate of formula model:
H＇＝-0.6436x+8.4707
In formula during H ＇=0, i.e. knee point, the width value of this point is that riparian buffer strips reaches best purification function, namely minimum width when nutritive substance removal efficiency is the highest, the minimum width value of trying to achieve buffer strip is 13.16m, now, the comprehensive removal efficiency of riparian buffer strips to nutritive substance is 78.27%, as shown in Figure 5.
The embodiment of the present invention is under the prerequisite ensureing stability of plant community, from the angle of water body Middle nutrition material removal effect the best, reach the prerequisite of best purification function at eco-filtration band under, the eco-filtration band protection width value of determination optimum that can be rational and quantitative, improves the ecologic effect of eco-filtration band.
A kind of structural representation determining the system of eco-filtration band protection width that Fig. 6 provides for the embodiment of the present invention.
See Fig. 6, the system of the determination eco-filtration band protection width that the embodiment of the present invention proposes comprises:
Sampling spot chooses unit 11, for choosing some pieces of sample ground on eco-filtration band, the width on every block sample ground chooses several sampling spots;
Nutritive substance clearance detecting unit 12, for coming under water condition, is carrying out water sampling at each sampling spot place, detects the comprehensive clearance of nutritive substance of each sampling spot;
Protection width model sets up unit 13, for obtaining the distance of each sampling spot to described eco-filtration band upper limb, obtain the eco-filtration bandwidth of each sampling spot, set up according to the comprehensive clearance of nutritive substance of the eco-filtration bandwidth of each sampling spot sampling spot corresponding with this width and protect width model;
Eco-filtration band protection width determining unit 14, for protecting width according to described protection width model determination eco-filtration band.
Further, propose in the embodiment of the present invention come water condition specifically comprise natural rainfall, rainmaking and/or slope top pour water.
Further, the system that the determination eco-filtration band that the embodiment of the present invention proposes protects width also comprises:
Starting point concentration detecting unit, for detecting the starting point concentration of the various nutritive substances of each sampling spot.
Further, the nutritive substance clearance detecting unit in the embodiment of the present invention, specifically comprises:
The concentration detection module of nutritive substance, for coming under water condition, is detecting the concentration of the various nutritive substances of each sampling spot after bath;
The clearance computing module of often kind of nutritive substance, concentration for the various nutritive substances of each sampling spot after the starting point concentration of the various nutritive substances according to each sampling spot described and described bath calculates the clearance of often kind of nutritive substance of each sampling spot respectively, and concrete formula is as follows:
Wherein, x
ifor the clearance of nutritive substance i, %, V
0for the starting point concentration of nutritive substance i, unit: mg/L, V are the concentration of nutritive substance after bath, unit: mg/L;
The comprehensive clearance computing module of nutritive substance, for the clearance of often kind of nutritive substance according to each sampling spot described, calculates the comprehensive clearance of nutritive substance of each sampling spot.
Further, the protection width model of the proposition in the embodiment of the present invention is specific as follows;
H＝ax
2+bx+c，
Wherein, x is the comprehensive clearance of nutritive substance, unit: %; H is ecological filter bandwidth degree, unit: m, a, b and c are equal model coefficient.
In sum, the method and system of the determination eco-filtration band protection width adopting the present invention to propose, under the prerequisite ensureing stability of plant community, from the angle of water body Middle nutrition material removal effect the best, reach the prerequisite of best purification function at eco-filtration band under, the eco-filtration band protection width value of determination optimum that can be rational and quantitative, realizes purification of water quality, effectively improves the ecological benefits of eco-filtration band.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention can by hardware implementing, and the mode that also can add necessary general hardware platform by software realizes.Based on such understanding, technical scheme of the present invention can embody with the form of software product, it (can be CD-ROM that this software product can be stored in a non-volatile memory medium, USB flash disk, portable hard drive etc.) in, comprise some instructions and perform method described in each embodiment of the present invention in order to make a computer equipment (can be Personal Computer, server, or the network equipment etc.).
It will be appreciated by those skilled in the art that accompanying drawing is the schematic diagram of a preferred embodiment, the module in accompanying drawing or flow process might not be that enforcement the present invention is necessary.
It will be appreciated by those skilled in the art that the module in the device in embodiment can carry out being distributed in the device of embodiment according to embodiment description, also can carry out respective change and be arranged in the one or more devices being different from the present embodiment.The module of above-described embodiment can merge into a module, also can split into multiple submodule further.
Be only several specific embodiment of the present invention above, but the present invention is not limited thereto, the changes that any person skilled in the art can think of all should fall into protection scope of the present invention.
Claims (10)
1. determine a method for eco-filtration band protection width, it is characterized in that, described method comprises:
Eco-filtration band is chosen some pieces of sample ground, the width on every block sample ground chooses several sampling spots;
Coming under water condition, carrying out water sampling at each sampling spot place, detecting the comprehensive clearance of nutritive substance of each sampling spot;
Obtain the distance of each sampling spot to described eco-filtration band upper limb, obtain the eco-filtration bandwidth of each sampling spot, set up according to the comprehensive clearance of nutritive substance of the eco-filtration bandwidth of each sampling spot sampling spot corresponding with this width and protect width model;
According to described protection width model determination eco-filtration band protection width.
2. method according to claim 1, is characterized in that, described come water condition specifically comprise natural rainfall, rainmaking and/or slope top pour water.
3. method according to claim 1, is characterized in that, described method also comprises:
Detect the starting point concentration of the various nutritive substances of each sampling spot.
4. method according to claim 3, is characterized in that, is describedly coming under water condition, detects the comprehensive clearance of nutritive substance of each sampling spot, specifically comprises:
Coming under water condition, detecting the concentration of the various nutritive substances of each sampling spot after bath;
Calculate the clearance of often kind of nutritive substance of each sampling spot respectively according to the concentration of the various nutritive substances of each sampling spot after the starting point concentration of the various nutritive substances of each sampling spot described and described bath, concrete formula is as follows:
Wherein, x
ifor the clearance of nutritive substance i, %, V
0for the starting point concentration of nutritive substance i, unit: mg/L, V are the concentration of nutritive substance after bath, unit: mg/L;
According to the clearance of often kind of nutritive substance of each sampling spot described, calculate the comprehensive clearance of nutritive substance of each sampling spot.
5. the method according to any one of claim 1-4, is characterized in that, described protection width model is specific as follows;
H＝ax
2+bx+c，
Wherein, x is the comprehensive clearance of nutritive substance, unit: %; H is ecological filter bandwidth degree, unit: m, a, b and c are equal model coefficient.
6. determine a system for eco-filtration band protection width, it is characterized in that, described system comprises:
Sampling spot chooses unit, for choosing some pieces of sample ground on eco-filtration band, the width on every block sample ground chooses several sampling spots;
Nutritive substance clearance detecting unit, for coming under water condition, is carrying out water sampling at each sampling spot place, detects the comprehensive clearance of nutritive substance of each sampling spot;
Protection width model sets up unit, for obtaining the distance of each sampling spot to described eco-filtration band upper limb, obtain the eco-filtration bandwidth of each sampling spot, set up according to the comprehensive clearance of nutritive substance of the eco-filtration bandwidth of each sampling spot sampling spot corresponding with this width and protect width model;
Eco-filtration band protection width determining unit, for protecting width according to described protection width model determination eco-filtration band.
7. system according to claim 6, is characterized in that, described come water condition specifically comprise natural rainfall, rainmaking and/or slope top pour water.
8. system according to claim 6, is characterized in that, described system also comprises:
Starting point concentration detecting unit, for detecting the starting point concentration of the various nutritive substances of each sampling spot.
9. system according to claim 8, is characterized in that, described nutritive substance clearance detecting unit, specifically comprises:
The concentration detection module of nutritive substance, for coming under water condition, is detecting the concentration of the various nutritive substances of each sampling spot after bath;
The clearance computing module of often kind of nutritive substance, concentration for the various nutritive substances of each sampling spot after the starting point concentration of the various nutritive substances according to each sampling spot described and described bath calculates the clearance of often kind of nutritive substance of each sampling spot respectively, and concrete formula is as follows:
Wherein, x
ifor the clearance of nutritive substance i, %, V
0for the starting point concentration of nutritive substance i, unit: mg/L, V are the concentration of nutritive substance after bath, unit: mg/L;
The comprehensive clearance computing module of nutritive substance, for the clearance of often kind of nutritive substance according to each sampling spot described, calculates the comprehensive clearance of nutritive substance of each sampling spot.
10. the system according to any one of claim 6-9, is characterized in that, described protection width model is specific as follows;
H＝ax
2+bx+c，
Wherein, x is the comprehensive clearance of nutritive substance, unit: %; H is ecological filter bandwidth degree, unit: m, a, b and c are equal model coefficient.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100897827B1 (en) * | 2008-07-04 | 2009-05-15 | 주식회사두합크린텍 | Water purification system using functional ecological-woodframe with natural affinity and it's manufacture method |
| CN103745121A (en) * | 2014-01-23 | 2014-04-23 | 南京大学 | Water quality model based low-pollution water ecological purification effect evaluation method |
| CN104176827A (en) * | 2014-07-22 | 2014-12-03 | 北京林业大学 | Riverbank buffer zone shrub configuration for reducing nitrogen and phosphorus in urban water source areas in high cold regions |
-
2015
- 2015-01-13 CN CN201510017656.9A patent/CN104649414A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100897827B1 (en) * | 2008-07-04 | 2009-05-15 | 주식회사두합크린텍 | Water purification system using functional ecological-woodframe with natural affinity and it's manufacture method |
| CN103745121A (en) * | 2014-01-23 | 2014-04-23 | 南京大学 | Water quality model based low-pollution water ecological purification effect evaluation method |
| CN104176827A (en) * | 2014-07-22 | 2014-12-03 | 北京林业大学 | Riverbank buffer zone shrub configuration for reducing nitrogen and phosphorus in urban water source areas in high cold regions |
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Application publication date: 20150527 |