Southern red soil area small watershed water and soil conservation ecological service function optimization method

Abstract

The invention relates to a southern red soil area small watershed water and soil conservation ecological service function optimization method. The watershed is divided into different management units;each management unit can configure several possible water conservation measures, potential water conservation measure space configuration scenes of a drainage basin are randomly generated through anoptimization algorithm, each scene is evaluated through an ecological service evaluation model, and along with iterative computation of the optimization algorithm, a water conservation measure space configuration scheme with the optimal ecological service function is provided for a decision maker. The method has the beneficial effects that the global optimization capability of a genetic algorithmcan be fully utilized, the existing comprehensive water and soil conservation control mode of the red soil area in the south is combined in the small watershed scale, water and soil conservation ecological service function optimization is carried out according to local conditions, and beneficial technical support is provided for water and soil work.

Description

technical field [0001] The invention relates to the field of ecological construction engineering, in particular to a method for optimizing ecological service functions of water and soil conservation in small watersheds in southern red soil regions. Background technique [0002] The southern red soil area is an important base for grain production, economic crops and economic forest fruits in my country, and it is also one of the areas with serious soil erosion in China. The intensity and wide range of soil erosion in this area are important factors restricting the sustainable development of society and economy. Soil and water conservation not only guarantees the sustainable development of soil and water environment, but also creates good conditions for soil and water security in our country. [0003] The ecological service function of water and soil conservation refers to the comprehensive effect of various measures adopted in the process of water and soil conservation to mai...

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Problems solved by technology

[0005] In the past, the traditional method was to evaluate the ecological service function benefits of soil and water conservation measures through comparative experiments in plots. This method took a long time and required a lot of manpower and material resources, and the results obtained from the comparative experiments were only within the range of several scenarios limited by the experimental conditions. Based on the evaluation and optimization of thousands of possible combinations of soil and water conservation measures, a method for optimizing the ecological service functions of soil and water conservation in small watersheds in the southern red soil region is proposed based on the multi-objective genetic algorithm.

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