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Calculation method for litter layer rainfall interception

A technology of litter and calculation method, which is applied in measurement devices, material absorption weighing, suspension and porous material analysis, etc., can solve problems such as weighing error, poor accuracy, sampling error, etc. , the effect of high rationality and accuracy

Inactive Publication Date: 2018-05-04
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Application Information

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Problems solved by technology

This method is complicated to operate, has poor accuracy, and there are sampling errors and weighing errors from the test area.

Method used

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  • Calculation method for litter layer rainfall interception
  • Calculation method for litter layer rainfall interception

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Embodiment Construction

[0021] In the following detailed description, certain exemplary embodiments of the present invention are simply shown and described by way of illustration. As those skilled in the art would realize, the described embodiments may be modified in various different ways, all without departing from the spirit or scope of the present invention. Therefore, the drawings and descriptions are to be regarded as illustrative in nature and not restrictive.

[0022] figure 1 It is a schematic flow chart of a method for calculating rainfall interception in the litter layer according to the present invention.

[0023] Such as figure 1 As shown, a method for calculating rainfall interception in the litter layer includes the steps:

[0024] (1) Put forward the calculation formula of rainfall interception: I=k·V·B a ·R b ·T c ·H,

[0025] I is rainfall interception, V is vegetation coverage, B is above-ground biomass, R is rain intensity; T is rainfall duration, H is thickness of litter layer;

[0026] ...

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Abstract

The invention discloses a calculation method for litter layer rainfall interception. After the method puts forward a theoretical calculating formula, the coefficients of parameters required by the calculating formula are determined through an experiment, and finally, a reasonable and feasible calculation method is obtained. The method relates to parameters related to the rainfall interception, wherein the parameters comprise vegetation coverage, above-ground biomass, duration of rainfall, raininess and the thickness of a litter layer. A soil box device for simulating the litter layer environment is manufactured, and a control experiment is set to determine the coefficients of parameters in the calculating formula. Finally, the calculating formula is verified through experiment data, and the accuracy of the formula is improved. The method is high in rationality and accuracy, meanwhile, a relationship between the earth surface litter layer and rainfall is established to identify the regulation ability of the litter layer for the rainfall, and therefore, a scientific basis is provided for researching the hydrology mechanism of the litter layer.

Description

Technical field [0001] The present invention belongs to the technical field of hydrology and water resources. Specifically, the present invention relates to a method for calculating rainfall interception in the litter layer under different rainfall intensities, different vegetation coverage, and different rainfall durations. Background technique [0002] During the water cycle, the layering of litter has an important influence on runoff generation. Accurately knowing the ability of the litter layer to intercept rainfall is very important for accurate calculation of runoff generation and concentration. [0003] At present, the calculation of rainfall interception by the litter layer mainly adopts the poor quality method. The weight of the litter layer before and after the rainfall is tested, and then the rainfall interception is calculated. This method is complicated to operate, poor accuracy, and sampling errors and weighing errors from the test area. [0004] This calculation metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/08G01N5/02
CPCG01N5/025G01N15/08
Inventor 严登明翁白莎严登华史婉丽秦天玲毕吴瑕
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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