Device for measuring vertical infiltration quantity and horizontal migration quantity of water in litter layer

Abstract

The invention discloses a separation and measurement device for vertical infiltration quantity and horizontal migration quantity of water contained in a litter layer after rainfall is intercepted by the litter layer. The device comprises a steel ring, a drum, a funnel, a water collection tank and electronic analytical balances, wherein the steel ring is nested in the drums, and a nylon mesh is paved at the bottom of the drum for holding litter; the funnel is located inside the drum and below the steel ring, is connected to the flow collection tank through a round tube, and is used for transferring vertical infiltration water in the litter layer to the water collection tank; the water collection tank is located outside the drum, and used for receiving water transferred from the funnel; and the electronic analytical balances are respectively located at the lower parts of the drum and the water collection tank, and used for measuring the vertical infiltration quantity and the horizontal migration quantity of water in the litter layer. The device provided by the invention can separate and measure the vertical infiltration quantity and the horizontal migration quantity of water in the litter layer under the condition of natural rainfall or artificial rainfall, so as to achieve quantitative research on water movement in the litter layer.

Description

technical field [0001] The invention relates to the technical field of precipitation measurement, in particular to a device for separating and measuring the vertical infiltration amount and horizontal migration amount of moisture in a layer after rainfall is intercepted by litter. Background technique [0002] A large number of existing studies have shown that the litter layer is an important part of the hydrological cycle process and plays an important role in the exchange of water and energy between the understory and the surface. The litter layer covers the surface, which can absorb the impact energy of rainfall to reduce soil erosion, protect soil moisture and soil temperature, and can also form an effective material and energy exchange with the surface through decay and decomposition to improve soil structure. Its hydrological effect And water conservation function is very prominent. In the past, there were mainly two methods for the research on the water movement mode...

AI Technical Summary

Problems solved by technology

In the past, there were mainly two methods for the research on the water movement mode in the litter layer: (1) Measure the vertical infiltration amount of water in the litter layer under the condition of natural rainfall or artificial rainfall, and calculate the interception amount by the difference between it and the rainfall , this method fails to measure the horizontal migration of water in the litter layer, and obviously cannot fully explain and analyze the movement form of water in the litter layer; (2) Under the conditions of natural rainfall or artificial rainfall, a simple runoff plot To measure the runoff under the litter cover, although this method collects the runoff and can be regarded as the total amount of water migration in the litter layer, it still cannot separate the water movement mode in the litter layer determination

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