Critical burial depth computing method for groundwater recharging vegetation

A groundwater and vegetation technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as lack of analysis and calculation methods, and achieve the effect of clear physical process and mechanism of action, reliable theoretical and technical support

Inactive Publication Date: 2015-07-01
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, so far, there is still a lack of analytical calculation methods based on the mechanism of groundwater recharge to vegetation, which has become a bottleneck for groundwater and ecological security management in arid and semi-arid areas

Method used

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  • Critical burial depth computing method for groundwater recharging vegetation
  • Critical burial depth computing method for groundwater recharging vegetation
  • Critical burial depth computing method for groundwater recharging vegetation

Examples

Experimental program
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Embodiment 1

[0027] This embodiment is a method for calculating the critical buried depth of groundwater recharge vegetation, the process is as follows figure 1 shown.

[0028] The thickness of the vegetation root action layer is observed on the spot, and the maximum rise height of soil capillary water is used as the thickness index of the diving active layer to carry out model analysis and calculation. The specific steps of the method described in this embodiment are as follows:

[0029] Data collection steps: used to collect various parameters of the known soil and vegetation communities, including: soil vegetation physiological data: thickness of root action layer, soil physical data: soil measured effective particle size, soil measured total porosity.

[0030] In this embodiment, the detected natural soil is called "known soil". The actual measurement of known soil is very important and is the collection of basic data, which should be as accurate as possible.

[0031] The root syste...

Embodiment 2

[0065] This embodiment is an improvement of the first embodiment, and is a refinement of the "regular arrangement model of soil particles" of the first embodiment. The soil particles in the "regular arrangement model of soil particles" described in this embodiment have a triangular arrangement structure.

[0066] The regular arrangement model of soil particles described in this embodiment is a regular triangular arrangement structure, and its plan view is as follows image 3 shown. The soil structure arranged in a regular triangle can be regarded as a height d 1 , the length of the upper and lower sides is d 1 3 1 / 6 spheres 7 are embedded in the regular triangular prism, and the rest ( image 3 The part of the grid in ) is the pores 6, while the part 8 between the three balls ( image 3 The blackened part in ) can be considered as effective pores.

Embodiment 3

[0068] This embodiment is an improvement of the second embodiment, which is about the refinement of the soil particles with a triangular arrangement structure in the second embodiment. The total porosity of the soil particles in the triangular arrangement structure described in this example is 39.5%.

[0069] Total porosity of triangularly arranged soil particles n for:

[0070] .

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Abstract

The invention relates to a critical burial depth computing method for a groundwater recharging vegetation. The critical burial depth computing method comprises the following steps: collecting data; establishing a rule model of known soil; computing effective aperture; computing the maximum lifting height of tubular billet water; computing the critical burial depth of the groundwater recharging vegetation. Through analyzing the functional relationship between underground water and a vegetation root system, the computing method elaborates the physical process of the groundwater recharging surface vegetation and defines the critical burial depth of the groundwater recharging surface vegetation; by taking the thickness of a diving activity layer and the thickness of the vegetation root layer as the computing goal, the determined critical burial depth computing method for a groundwater recharging surface vegetation is structured, and thus the technical blank is filled. The method has clear physical process and function mechanism, and also has the technical university for the vast arid region and semi-arid region; besides, the method provides reliable theoretical and technological supports for the reasonable development and utilization of underground water resource and water containing layer of underground water.

Description

technical field [0001] The invention relates to a method for calculating the critical burial depth of groundwater replenishment vegetation, which is an ecological hydrological analysis and calculation method, and is applicable to a wide range of arid and semi-arid areas. Calculation method. Background technique [0002] For arid and semi-arid regions, determining the groundwater level that recharges vegetation is of great significance for ecological security management. After the rainfall infiltrates into the soil, it stays in the soil for the transpiration of vegetation or the evaporation of bare soil. If the rainfall is large enough, it will continue to infiltrate to replenish groundwater. For arid areas, the groundwater comes from the subsurface flow field formed by the runoff from the upper reaches, and the soil water formed only by rainfall is not enough to support the surface vegetation. The surface is in a desert state, and only under the condition of groundwater phr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 陈敏建张秋霞马静陈根发朱寿峰汪林王鹏吕烨廖丽莎
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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