Nonlinear agricultural non-point source pollution control method

Abstract

The invention discloses a nonlinear agricultural non-point source pollution control method. The method comprises the steps that data are collected, a watershed hydrologic model is established, verification is conducted, an interactive algorithm is adopted in a nonlinear non-point source pollution control model, a submodel is split, an upper bound submodel and a lower bound submodel are subjected to linearized solution, 11 risk situations are defined by changing the risk level rho, a linear equation is solved to acquire the agricultural optimal planting area (please see the specifications for the formula) under the 11 risk situations and the optimal dumping right (please see the specifications for the formula) obtained through transaction in each agricultural area, and the comprehensive degree of satisfaction (please see the specifications for the formula) of environment pollution under the 11 risk situations is further acquired. According to the method, the indefinite information characteristics of random numbers, interval numbers, fuzzy numbers and the like are comprehensively considered, the production plan can be helped to be adjusted for a researched river basin, and emission is made to meet the environment requirement.

Description

technical field [0001] The invention belongs to the field of water quality management, and in particular relates to a method for controlling non-point source pollution in non-linear agriculture. Background technique [0002] Agriculture is the pillar industry of the national economy and people's livelihood. With the growth of population, the demand for food is increasing, and the output of agricultural products is increasing rapidly, while environmental problems also follow. Agricultural non-point source pollution load is large, the pollution area is wide, and it is difficult to control. In order to increase food production, a large number of chemical fertilizers and pesticides are applied to farmland. According to statistics, in 2012, 57 million tons of chemical fertilizers were put into farmland in China. Under the influence of rainfall and topography, these substances easily flow into water bodies with surface runoff and soil erosion, causing serious ecological damage t...

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Problems solved by technology

For example, there is insufficient research on the emission rights trading system under uncertain conditions, and the lack of quantitative analysis of the risks of the emission rights trading system, which makes it difficult to reflect the reality and propose scientific and reasonable water quality management and emission rights trading schemes. These problems have increasingly become serious constraints on water quality. management bottleneck

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