Method for identifying influence of porous material on water retention capacity of soil
A technology for soil water holding capacity and porous materials, which is applied in the field of identifying the impact of porous materials on soil water holding capacity, and can solve problems such as the effective range of influence that no one has verified
Active Publication Date: 2018-11-30
CHINA INST OF WATER RESOURCES & HYDROPOWER RES
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Problems solved by technology
However, up to now, the impact of porous materials buried in the soil on the water holding capacity of the soil and the effective range of influence have not been verified so far.
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[0046] In the following detailed description, certain exemplary embodiments of the present invention are shown and described, simply 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. Accordingly, the drawings and descriptions are to be regarded as illustrative in nature, and not restrictive.
[0047] Such as figure 1 As shown, the present invention provides a dynamic monitoring system and identification method for the impact of porous materials on soil water holding capacity, specifically comprising the following steps:
[0048]S1: Set up a control group and an experimental group, install experimental devices, and build a dynamic monitoring system for soil moisture changes; the specific performance is that the experimental devices include artificial rainfall devices, experimental boxes, soil moisture sensors, data recor...
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The invention discloses a method for identifying the influence of a porous material on the water retention capacity of soil. The method comprises the following steps that the volume weight of the soilis set, an experimental box body is internally filled with the soil in a layered mode, meanwhile, the porous material is arranged at the center position of the experimental box body, soil moisture sensors are arranged on the periphery of the porous material at preset intervals, an experimental group is established, and further, except that the porous material is not arranged, a plurality of control groups are established according to the step S1; pre-rainfall is carried out, so that the soil moisture in the experimental box body is saturated; the time interval is set, and data monitored by the soil moisture sensors are continuously recorded; the grid precision is set, a cubic spline interpolation method is adopted, spatial interpolation is carried out on the data monitored by the soil moisture sensors in the horizontal direction and the vertical direction at the same moment, and the dynamic change process of the soil moisture at different distances of the porous material is calculated; and the experiment group and the control groups are compared and analyzed, and the effective influence range of the porous material on the water retention capacity of the soil is determined.
Description
technical field [0001] The invention belongs to the technical field of soil moisture monitoring, and in particular relates to a method for identifying the influence of porous materials on soil water holding capacity. Background technique [0002] Soil is essentially a loose porous body full of pores of different sizes, which is composed of numerous aggregates and particulate structures with water storage function. The pore structure of the soil itself, coupled with the surface suction of soil particles and the capillary suction between particles, makes the soil unit have a large water absorption capacity, which is called the water holding capacity of the soil. There are many factors affecting soil water holding capacity, mainly including: soil structure, soil organic matter, soil clay content, total porosity, capillary porosity, etc. Among them, soil porosity and clay content are the most important influencing factors. At present, methods to enhance soil water holding capa...
Claims
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IPC IPC(8): G01N33/24
CPCG01N33/246
Inventor 严登华秦天玲吕振豫史婉丽刘姗姗刘芳
Owner CHINA INST OF WATER RESOURCES & HYDROPOWER RES