CN107991213A - A kind of computational methods of litter rainfall interception amount - Google Patents
A kind of computational methods of litter rainfall interception amount Download PDFInfo
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- CN107991213A CN107991213A CN201711115943.9A CN201711115943A CN107991213A CN 107991213 A CN107991213 A CN 107991213A CN 201711115943 A CN201711115943 A CN 201711115943A CN 107991213 A CN107991213 A CN 107991213A
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- rainfall
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- interception amount
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- 238000000205 computational method Methods 0.000 title claims abstract description 26
- 238000004364 calculation method Methods 0.000 claims abstract description 25
- 238000002474 experimental method Methods 0.000 claims abstract description 15
- 239000002028 Biomass Substances 0.000 claims abstract description 9
- 239000002689 soil Substances 0.000 claims abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000004888 barrier function Effects 0.000 claims description 12
- 239000002362 mulch Substances 0.000 claims description 5
- 239000004576 sand Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 12
- 238000011160 research Methods 0.000 abstract description 4
- 230000001105 regulatory effect Effects 0.000 abstract description 3
- 238000004088 simulation Methods 0.000 abstract description 3
- 239000004816 latex Substances 0.000 description 9
- 229920000126 latex Polymers 0.000 description 9
- 238000010586 diagram Methods 0.000 description 3
- 230000014759 maintenance of location Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012795 verification Methods 0.000 description 2
- 210000000481 breast Anatomy 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
- G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content
- G01N5/025—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content for determining moisture content
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- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Dispersion Chemistry (AREA)
- Catching Or Destruction (AREA)
- Management, Administration, Business Operations System, And Electronic Commerce (AREA)
Abstract
The invention discloses a kind of computational methods of litter rainfall interception amount, this method is determined by experiment the coefficient of parameter needed for calculation formula after calculation formula of advancing a theory, and finally draws a kind of computational methods of reasonable.This method is related to and rainfall interception amount relevant parameter, including vegetation coverage, ground biomass, rainfall duration, the thickness of raininess and litter.By making the soil box device of simulation litter environment, control experiment is set, determines the coefficient of parameter in calculation formula.The calculation formula is verified finally by experimental data, improves the accuracy of formula.This method has higher reasonability and accuracy, meanwhile, by establishing the relation of earth's surface litter and rainfall, regulating power of the litter to rainfall is identified, so that the research for the hydrology mechanism of litter provides scientific basis.
Description
Technical field
The invention belongs to Hydrology and Water Resources technical field, specifically, the present invention relates to litter in difference
Rainfall intensity, different vegetation coverages and the rainfall interception amount computational methods in the case of different rainfall durations.
Background technology
In water cycle process, dry branches and fallen leaves stratification has important influence to production stream, and exact knowledge litter is to drop
The ability of the retention of rain, it is particularly significant to production confluence accurate calculation.
At present, dropped for calculating of the litter to rainfall interception amount mainly using mass difference method by testing
The weight of litter before and after rain, then calculates rainfall interception amount.The complexity that this method operates, poor accuracy, also
There are the sampling error from trial zone, weighing error etc..
The computational methods need to only be monitored conventional parameter, just can accurately calculate rainfall interception amount, so as to be deadwood
The research of the hydrology mechanism of mulch cover mulch-covering provides more preferable support.
The content of the invention
The object of the present invention is to provide a kind of computational methods of litter rainfall interception amount, by establishing earth's surface deadwood
Mulch cover mulch-covering and the relation of rainfall, regulating power of the identification litter to rainfall.
In order to solve the above technical problems, the present invention provides a kind of computational methods of litter rainfall interception amount, bag
Include step：
(1) rainfall interception amount calculation formula is proposed：I=kVBa·Rb·TcH,
I is rainfall interception amount, and V is vegetation coverage, and B is ground biomass, R is raininess；T is rainfall duration, and H is deadwood
The thickness of mulch cover mulch-covering；
(2) experimental provision for being used for simulating litter rainfall interception environment is made；
(3) operation control experiment；
(4) the parameter coefficient in rainfall interception amount calculation formula is determined by experimental data.
Preferably, the computational methods of the litter rainfall interception amount further comprise：
(5) accuracy of rainfall interception amount calculation formula is verified by experimental data.
In a preferred embodiment, the experimental provision for being used to simulate litter rainfall interception environment includes groove profile
Container and rainfall simulator, set gradually litter, latex water barrier, fine sand layer in the slot type receptacles from top to bottom
And soil horizon, water outlet are arranged at the side of the slot type receptacles at the position that the latex water barrier converges.According to this hair
Rainfall after retention is collected and weighed from water outlet using latex water barrier by bright above-mentioned experimental provision；Fine sand layer is to allow
Latex water barrier forms certain gradient, facilitates the collection of rainwater；Water outlet is arranged on the position of latex water barrier confluence, into one
Step is easy to the collection of rainwater.
In a preferred embodiment, it is described to control that tests to control variable as the rain in the rainfall interception amount calculation formula
By force, rainfall duration and ground biomass.It is highly preferred that each control variable sets four groups of experiments.
Computational methods according to the present invention use the method that calculation formula is combined with experimental verification, suitable for rainfall
Middle rainfall is more than the situation of interception.
As described above, a kind of computational methods of litter rainfall interception amount are in calculating of advancing a theory according to the present invention
After formula, the coefficient of parameter needed for calculation formula is determined by experiment, finally draws a kind of computational methods of reasonable.The party
Method is related to fall with rainfall interception amount relevant parameter, including vegetation coverage, ground biomass, rainfall duration, raininess and deadwood
The thickness of leaf layer.By making the soil box device of simulation litter environment, control experiment is set, determines to join in calculation formula
Several coefficients.The calculation formula is verified finally by experimental data, improves the accuracy of formula.This method has higher conjunction
Rationality and accuracy, meanwhile, by establishing the relation of earth's surface litter and rainfall, tune of the identification litter to rainfall
Energy saving power, so that the research for the hydrology mechanism of litter provides scientific basis.
Brief description of the drawings
It is hereinafter more complete with reference to the accompanying drawings to enable the above objects, features and advantages of the present invention to become apparent
Ground describes some example embodiments of the present invention；However, the present invention can embody in different forms, should not be considered limited to
Embodiments set forth herein.On the contrary, attached drawing illustrates some example embodiments of the present invention together with specification, and for explaining
The principle of the present invention and aspect.
Fig. 1 is the flow diagram according to a kind of computational methods of litter rainfall interception amount of the present invention.
Fig. 2 is the knot of the experimental provision for the computational methods for being used for realization a kind of litter rainfall interception amount of the present invention
Structure schematic diagram.
Embodiment
In the following detailed description, some exemplary embodiments of the invention are illustrated simply by the mode of illustration
And description.As the skilled person will recognize, described embodiment can be changed in a variety of ways,
All without departing from the spirit or scope of the present invention.Therefore, scheme and describe to be considered as inherently illustrative, and
It is not limiting.
Fig. 1 is the flow diagram according to a kind of computational methods of litter rainfall interception amount of the present invention.
As shown in Figure 1, a kind of computational methods of litter rainfall interception amount, including step：
(1) rainfall interception amount calculation formula is proposed：I=kVBa·Rb·TcH,
I is rainfall interception amount, and V is vegetation coverage, and B is ground biomass, R is raininess；T is rainfall duration, and H is deadwood
The thickness of mulch cover mulch-covering；
(2) experimental provision for being used for simulating litter rainfall interception environment is made；
(3) operation control experiment；
(4) the parameter coefficient in rainfall interception amount calculation formula is determined by experimental data.
Preferably, the computational methods of the litter rainfall interception amount further comprise：
(5) accuracy of rainfall interception amount calculation formula is verified by experimental data.
Fig. 2 schematically shows the experiment for the computational methods for being used for realization a kind of litter rainfall interception amount of the present invention
One example of the structure of device.
As shown in Fig. 2, include what is be made of stainless steel for the experimental provision for simulating litter rainfall interception environment
Slot type receptacles 1 and rainfall simulator (not shown).Litter 11, latex are set gradually in slot type receptacles 1 from top to bottom
Water barrier 12, fine sand layer 13 and soil horizon 14, water outlet 15 are arranged at the side of the slot type receptacles 1 in the latex water barrier
At the position of 12 confluences.
Above-mentioned experimental provision according to the present invention is collected the rainfall after retention simultaneously from water outlet using latex water barrier 12
Weigh.Fine sand layer 13 is to allow latex water barrier to form certain gradient, facilitates the collection of rainwater.Water outlet 14 is arranged on breast
The position of glue water barrier confluence, further easy to the collection of rainwater.Rainfall simulator (not shown) can adjust rainfall intensity,
Rainfall duration etc..
In a preferred embodiment, it is described to control that tests to control variable as the rain in the rainfall interception amount calculation formula
By force, rainfall duration and ground biomass.It is highly preferred that each control variable sets four groups of experiments.Alternately, each control becomes
Amount can set more than four groups experiments.
Computational methods according to the present invention use the method that calculation formula is combined with experimental verification, suitable for rainfall
Middle rainfall is more than the situation of interception.
As described above, a kind of computational methods of litter rainfall interception amount are in calculating of advancing a theory according to the present invention
After formula, the coefficient of parameter needed for calculation formula is determined by experiment, finally draws a kind of computational methods of reasonable.The party
Method is related to fall with rainfall interception amount relevant parameter, including vegetation coverage, ground biomass, rainfall duration, raininess and deadwood
The thickness of leaf layer.By making the soil box device of simulation litter environment, control experiment is set, determines to join in calculation formula
Several coefficients.The calculation formula is verified finally by experimental data, improves the accuracy of formula.
The method according to the invention has higher reasonability and accuracy, meanwhile, by establishing earth's surface litter
With the relation of rainfall, regulating power of the litter to rainfall is identified, so that the research of the hydrology mechanism for litter
Scientific basis is provided.
Claims (5)
- A kind of 1. computational methods of litter rainfall interception amount, it is characterised in that including：(1) rainfall interception amount calculation formula is proposed：I=kVBa·Rb·TcH,I is rainfall interception amount, and V is vegetation coverage, and B is ground biomass, R is raininess；T is rainfall duration, and H is dry branches and fallen leaves The thickness of layer；(2) experimental provision for being used for simulating litter rainfall interception environment is made；(3) operation control experiment；(4) the parameter coefficient in rainfall interception amount calculation formula is determined by experimental data.
- 2. computational methods according to claim 1, it is characterised in that further comprise：(5) accuracy of rainfall interception amount calculation formula is verified by experimental data.
- 3. computational methods according to claim 1, it is characterised in that described to be used to simulate litter rainfall interception ring The experimental provision in border includes slot type receptacles (1) and rainfall simulator, is set gradually from top to bottom in the slot type receptacles (1) withered Branch mulch cover mulch-covering (11), water barrier (12), fine sand layer (13) and soil horizon (14), water outlet (15) are arranged at the slot type receptacles (1) side is at the position that the water barrier (12) converges.
- 4. computational methods according to claim 1, it is characterised in that it is described control experiment the variable that controls be the rainfall Raininess, rainfall duration and ground biomass in interception calculation formula.
- 5. computational methods according to claim 4, it is characterised in that each control variable sets four groups of experiments.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711115943.9A CN107991213B (en) | 2017-11-13 | 2017-11-13 | Calculation method for rainfall interception amount of dry branch and fallen leaf layer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711115943.9A CN107991213B (en) | 2017-11-13 | 2017-11-13 | Calculation method for rainfall interception amount of dry branch and fallen leaf layer |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107991213A true CN107991213A (en) | 2018-05-04 |
| CN107991213B CN107991213B (en) | 2020-06-12 |
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| CN201711115943.9A Expired - Fee Related CN107991213B (en) | 2017-11-13 | 2017-11-13 | Calculation method for rainfall interception amount of dry branch and fallen leaf layer |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033584A (en) * | 2018-07-12 | 2018-12-18 | 中国水利水电科学研究院 | It is a kind of to consider the withered slope concentration calculation method for falling layer |
| CN110553946A (en) * | 2019-08-07 | 2019-12-10 | 中国水利水电科学研究院 | experimental device and method for rapidly measuring rainfall interception rate in field |
| CN115032109A (en) * | 2022-01-28 | 2022-09-09 | 昆明理工大学 | Device and method for measuring water retention amount of roof greening soil |
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| CN201476824U (en) * | 2009-06-05 | 2010-05-19 | 兰州大学 | Grassland rainfall interception measuring device |
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| CN103792339A (en) * | 2014-02-26 | 2014-05-14 | 北京林业大学 | Testing device and method for determining litter interception quantity |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109033584A (en) * | 2018-07-12 | 2018-12-18 | 中国水利水电科学研究院 | It is a kind of to consider the withered slope concentration calculation method for falling layer |
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| CN110553946A (en) * | 2019-08-07 | 2019-12-10 | 中国水利水电科学研究院 | experimental device and method for rapidly measuring rainfall interception rate in field |
| CN115032109A (en) * | 2022-01-28 | 2022-09-09 | 昆明理工大学 | Device and method for measuring water retention amount of roof greening soil |
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| Publication number | Publication date |
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| CN107991213B (en) | 2020-06-12 |
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Granted publication date: 20200612 Termination date: 20201113 |