Method for determining root system soil profile preferential flow

A soil profile and priority flow technology, applied in soil material testing, material inspection products, etc., can solve the problem of difficulty in exploring the causes and scale of soil priority flow, and achieve the effect of convenient operation.

Active Publication Date: 2017-04-26
NANJING FORESTRY UNIV
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Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a method for measuring the preferential flow of the root soil profil

Method used

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  • Method for determining root system soil profile preferential flow
  • Method for determining root system soil profile preferential flow
  • Method for determining root system soil profile preferential flow

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Embodiment Construction

[0025] In order to make the technical means, creative features, goals and effects achieved by the present invention easy to understand, the present invention will be further described below in conjunction with specific illustrations.

[0026] A method for measuring root soil profile preferential flow, comprising the steps of:

[0027] a. If figure 1 with figure 2 As shown, along the vertical direction of the slope, a piece of soil pit with a length, width and depth of 100 cm is dug vertically downward, and the 100 cm2 experimental section formed by the upstream side wall of the pit is processed to make the soil profile vertical, Smooth; if it is on flat ground, directly dig a pit with a length, width and depth of 100cm;

[0028] b. If the preferential flow through the root system is determined, the root is divided into dead root and live root, or the rhizome is divided and recorded, and then the part of the root system exposed outside the soil profile is cut off;

[0029] ...

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Abstract

The invention discloses a method for determining the root system soil profile preferential flow. The method mainly comprises: digging a soil pit, processing the formed experimental profile, dividing the rhizome and recording, and cutting the root system part exposed to the soil profile; inserting a plurality of iron plates on the experimental profile, fixing the outer portions of the iron plates by using a bracket, carrying out wet pretreatment on the soil profile, and recording the position of the root producing the preferential flow in the profile; and inserting a plurality of metal pipes connected to soft pipes at the position of the root producing the preferential flow, controlling the rainfall intensity and the rainfall time, and determining the number of the preferential flow produced by the root system in the soil profile under different rainfall intensities or rainfall times, wherein the other end of the soft pipe is connected to a container so as to collect the soil water exported during the experiment process. According to the present invention, the black-box problem of the soil preferential flow is researched by digging the soil profile, such that the advantages of intuition and convenient operation are provided.

Description

technical field [0001] The invention relates to the field of forest hydrological observation, in particular to a method for measuring the preferential flow of root soil profile. Background technique [0002] In forest hydrological observations, soil preferential flow is a very common form of water and solute transport in soil, and its existence will lead to rapid downward migration of solutes. However, because soil preferential flow is a "black box" problem, it is difficult to explore the cause and scale of soil preferential flow by relying on current technical means. Especially for forest soil, the mechanism of complex root system on preferential flow is still unclear. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for measuring the root soil profile preferential flow, which effectively solves the problem that the current technical means are difficult to explore the cause and scale of the soil preferen...

Claims

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Application Information

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IPC IPC(8): G01N33/24
CPCG01N33/24
Inventor 张金池
Owner NANJING FORESTRY UNIV
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