贵州普定后寨河流域岩溶生态脆弱性的模糊综合评价

Fuzzy-based Evaluation of Karst Eco-environment Fragility at Houzhai Underground Basin in Puding County,Guizhou Province

本文介绍了基于模糊数学理论的岩溶生态脆弱性评价方法,选取了平均坡度、森林覆盖率、石山裸露、耕地面积、水土流失、人口密度、人均耕地、人均粮食、人均收入9个主要因素作为评价因素,并以贵州省普定县后寨河流域为例进行了具体计算与分析。评判结果表明:该研究区生态脆弱形势较为严重,在13个典型喀斯特村中有7个属于强度脆弱或极强度脆弱区,2个属于中度脆弱,属于轻度脆弱的有4个,因而需大力加强生态环境保护和重建工作。

Based on the principle of Fuzzy, the Fussy comprehensive evaluation model of karst ecology fragility was introduced. The selected evaluation factors include average gradient, forest coverage, uncovered karst, cultivated area, soil erosion, density of population, farmland areas per person, grain output per capita, income per capita. Taking Houzhai areas of Guizhou Province as an example, the evaluation results show that these areas are of fragile degree. Among them, 7 fall into severely or extremely fragile areas, 2 fall into moderately fragile areas, and 4 fall into low fragile areas. Some measures to strengthen the environmental management are put forward.