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Underground water grading and zoning evaluation method in agricultural activity area

An evaluation method and risk classification technology, applied in the field of groundwater pollution and risk evaluation, which can solve problems such as pollution, governance difficulties, and human health threats.

Inactive Publication Date: 2013-03-27
CHINESE RES ACAD OF ENVIRONMENTAL SCI
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Problems solved by technology

Therefore, the pollution of groundwater by pesticides in agricultural activity areas has become an increasingly prominent problem. Once the groundwater, which is the source of drinking water in most areas of our country, is polluted, human health will be greatly threatened. In addition, its treatment is also an extremely difficult problem. process

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  • Underground water grading and zoning evaluation method in agricultural activity area
  • Underground water grading and zoning evaluation method in agricultural activity area
  • Underground water grading and zoning evaluation method in agricultural activity area

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Embodiment Construction

[0039] The new method for evaluating groundwater risks in agricultural activity areas by grading and zoning provided by the present invention is to initially establish a set of comprehensive and representative evaluation index systems, arrange sampling points based on spatial discretization, and adopt reasonable methods to collect groundwater samples. , and select indicators according to the characteristics of the primary indicators, and calculate the reasonable weight of each indicator and the reasonable degree of membership of each sampling point indicator to make a comprehensive evaluation of the regional groundwater pollution risk, and divide and classify the groundwater risk.

[0040] The construction of the comprehensive and representative evaluation index system established by the present invention and the method of index selection are as follows: the index system in the present invention is divided into three layers, the top layer is the target layer, that is, the region...

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Abstract

The invention discloses an underground water grading and zoning evaluation method in an agricultural activity area. The method comprises the following steps of: establishing a set of index system for evaluation, arranging a sampling point in a spatial discretization mode, acquiring an underground water sample, screening the indexes according to the characteristics of primary indexes, calculating the weight of each index and the degree of membership of each sampling point index, comprehensively evaluating the regional underground water pollution risk, and zoning and grading the underground water risk. Aiming at the pollution characteristics of the agricultural activity area in China, the method has high adaptability and popularization, and the underground water risk grade and risk distribution in the agricultural activity area can be scientifically and reasonably evaluated.

Description

technical field [0001] The invention belongs to the field of groundwater pollution and risk assessment, and specifically aims at the new characteristics of groundwater pollution risks in agricultural activity areas, and proposes a reasonable groundwater risk classification and zoning evaluation method in agricultural activity areas. Background technique [0002] In my country's current water use structure, groundwater accounts for 20% of the country's total water supply, 70% of drinking water supply, 40% of farmland irrigation water, and 38% of industrial water consumption. This water use structure will not change in the short term. , so groundwater is crucial to the sustainable development of our country's economy and society in the future. At the same time, my country is a large agricultural country, with an annual output of pesticides of 500,000 tons, ranking second in the world. The usage amount is about 230,000 tons, and the average application amount is 2.33kg / hm 2 . ...

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Application Information

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IPC IPC(8): G06F19/00
Inventor 席北斗潘红卫何小松许其功姜永海白顺果
Owner CHINESE RES ACAD OF ENVIRONMENTAL SCI
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