An experimental device and method for measuring the layered flux of greenhouse gases in paddy field drainage ditches

Abstract

The invention discloses an experimental device and method for measuring the layered flux of greenhouse gases in paddy field drainage ditches, including a cylindrical top cover box, a cylindrical box body, a gas synchronous sampling device, an automatic water inlet and outlet device, and sequentially passing through the cylindrical top cover box The temperature sensor probes in the four mounting holes on the top, the uniform spraying device for pollutants, the pressure balance tube, and the miniature barometer; The device is respectively connected with the top and the bottom of the cylindrical box. The uniform spraying device for pollutants is provided with a fixed pulley, and when it is set out, the uniform sprinkler bottle can slide along the wire rope 1 and evenly spray pollutants in the cylindrical box. The invention also discloses an experiment method of the device. The invention realizes the quantitative input of pollutants such as sulfur fertilizer and the accurate measurement of the layered flux of greenhouse gas in the drainage ditches under the control of different hydrodynamic conditions, and is easy to operate and low in cost.

Description

Technical field [0001] The present invention relates to an experimental apparatus and method thereof, which measures a gastrointestinal gas stratified flux in the rice field drainage trench, belongs to the field of environmental protection system. Background technique [0002] Drainage is an important ecological corridor to connect rice fields and river lakes. It not only collects and transports a large number of runoffs, but also carries and transports a large number of nutrients such as carbonaceous sulfur. This special geographic location makes the drainage trenches a special ecosystem with transition zone, both rice field ecosystems and wetland ecosystems. Dual characteristics. This special ecosystem this special ecosystem can not only be greenhouse gas, whether methane CH. 4 Or N 2 O produce a sufficient reaction substrate and has the environmental conditions required to produce these greenhouse gases. [0003] At present, the research on greenhouse gases is mostly based on ...

AI Technical Summary

Problems solved by technology

Greenhouse gas emissions in drainage ditches are affected by the input of nutrients such as paddy field dewatering and sulfur fertilizers. Traditional monitoring and sampling devices for greenhouse gas emission fluxes in wetland and paddy field soils have been difficult to apply. In order to further study greenhouse gas emissions in drainage ditches At the same time, due to the high degree of uncertainty in the field environment, it is difficult to quantitatively study the characteristics of greenhouse gas emissions under different conditions, so that it is impossible to reveal the impact mechanism of greenhouse gas emissions; in addition, previous monitoring and sampling studies of greenhouse gases Whether in the field or indoors, the distribution characteristics of greenhouse gases at different spatial depths are not considered, which is of great significance for the effective reduction of greenhouse gases in ditches; Experimental device and method for layered flux of greenhouse gases in drainage ditches under controlled conditions

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