A method for the layout of atmospheric subsidence monitoring points in agricultural ecosystems in the Western Sichuan Plain

Abstract

A method for arranging atmospheric deposition monitoring points in the agroecological system of the Western Sichuan Plain. First, dry and wet deposition collection is carried out, sampling points are arranged and collectors are placed, wet deposition collection is performed once a month, dry deposition collection is performed twice a month, and total nitrogen, Ammonium nitrogen, nitrate nitrogen and soluble organic nitrogen are used to calculate the sedimentation flux; secondly, the land use types in the study area are divided, and the area data of each land use type are extracted; after that, the sedimentation fluxes of various nitrogen indicators for dry and wet deposition are obtained The correlation with the area of ​​each land use type finally determines the optimal interval scale suitable for the sampling points of atmospheric deposition monitoring in the study area. The present invention can obtain more accurate sampling point distance based on the distribution pattern of actual land use type, finally, can not only effectively and comprehensively monitor the atmospheric subsidence of each functional area, but also avoid the waste of resources.

Description

technical field [0001] The invention belongs to the technical field of a method for arranging atmospheric subsidence monitoring points, and in particular relates to a method for arranging atmospheric subsidence monitoring points for agricultural ecosystems in the Western Sichuan Plain. Background technique [0002] Monitoring dry and wet deposition is the focus of atmospheric deposition research, and obtaining effective monitoring data is a hot issue in atmospheric environment research. At present, the research on atmospheric deposition monitoring mainly focuses on the monitoring methods of atmospheric deposition. With the advancement of science and technology, field sampling technology, indoor measurement and source apportionment methods have all been developed rapidly. In the current research, the commonly used methods of layout are: (1) Function area layout method. Divide the monitoring area into industrial area, commercial area, agricultural area, residential area, indu...

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Problems solved by technology

[0003] To sum up, the problem existing in the existing technology is that a targeted and systematic system has not been formed for the functional area distribution method of atmospheric deposition monitoring in various ecosystems, especially in the issue of the layout distance of monitoring points. A relatively precise range is used as the best monitoring scale for the collection of atmospheric deposition samples

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