Water and soil conservation measure ecological service function evaluation method

Abstract

The invention provides a water and soil conservation ecological service function evaluation method. The method comprises the steps of: obtaining basic ecological indexes related to the water and soilconservation measure ecological service function of a drainage basin, and assigning a weight to each basic ecological index; and scoring the value of each basic ecological index, wherein the basic ecological indexes comprise indexes related to sediment loss, indexes related to runoff regulation and control in rainy seasons and indexes related to runoff regulation and control in dry seasons, and optionally comprise indexes related to forest product provision. The method is particularly suitable for evaluating the water and soil conservation measure ecological service function of the southern red soil hilly area small watershed, and therefore the current situation of the water and soil conservation measure ecological service function of the small watershed can be evaluated according to actual basic ecological indexes.

Description

technical field [0001] The invention relates to a method for evaluating ecological service functions of soil and water conservation measures, in particular to a method for evaluating ecological service functions of soil and water conservation measures suitable for southern red soil hilly areas. Background technique [0002] The red soil hilly area is located in the tropics and subtropics, rich in water and heat resources, high temperature, rainy, dry and wet seasons are obvious, the precipitation is large, but the temporal and spatial distribution is uneven, most of the rainfall is concentrated in March to June, and there are many heavy rains; the terrain is high in the west and east The ratio of mountains, hills and plains is roughly 7:2:1. This natural condition leads to frequent erosion under rainfall conditions and rill erosion. In addition, the area is densely populated, and unreasonable human activities have led to large-scale degradation of red soil, resulting in seri...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the problems of low ecological function and lack of systematic evaluation of ecological service functions in the southern red soil hilly area, an evaluation system for the ecological service function of soil and water conservation measures suitable for the southern red soil hilly area was established. The characteristics of the ecological service functions of the soil and water conservation measures of the slope orchards in the district vary with time, and exploring the timeliness of the water and soil conservation measures can provide scientific support for the spatial layout of the water and soil conservation measures in the watershed. The present invention includes the following contents:

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