An optimization method for soil and water conservation ecological service functions in small watersheds in southern red soil regions

Abstract

The invention relates to a method for optimizing the ecological service function of water and soil conservation in small watersheds in southern red soil regions. The watershed is divided into different management units, each management unit can be configured with several possible water conservation measures, and the potential water conservation measures of the watershed are randomly generated through the optimization algorithm. For the spatial configuration scenarios of measures, the ecological service evaluation model is used to evaluate each scenario. With the iterative calculation of the optimization algorithm, the spatial configuration scheme of soil and water conservation measures with the optimal ecological service function is provided to decision makers. The beneficial effects of the present invention are: the global optimization ability of the genetic algorithm can be fully utilized, and at the small watershed scale, combined with the existing comprehensive management model of water and soil conservation in the southern red soil region, the optimization of the ecological service functions of water and soil conservation can be carried out according to local conditions, so as to provide beneficial benefits for water and soil work. technical support.

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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