岷江上游生态脆弱性驱动力分析

作为长江上游重要的生态屏障,岷江上游是典型的生态环境脆弱区。选取了测度岷江上游生态脆弱性的20个指标、25个样本年的2500个数据,采用逆向测度法构建了岷江上游生态脆弱性的测度指标体系,运用因子分析法得到了影响岷江上游的六大驱动因子:生态环境背景状况、人口承载与结构水平状况、水土流失状况、土地垦殖与利用状况、产业结构水平状况、投资水平与结构状况,为岷江上游生态脆弱区恢复重建及经济社会发展提供了科学依据。

Analysis for Driving Force of Ecological Vulnerability at Upper Reaches of Minjiang River

As a significant ecological protective screen at the upper reaches of Changjiang River,the upper reaches of Minjiang River was a typically eco-environmental vulnerable area.This paper chose the 20 indexes and 2500 datas of 25 sample years which could measure ecological vulnerability at the upper reaches of Minjiang River and construct the index system of eco-environment vulnerability at the upper reaches of Minjiang River by adopting the methodology of regressive measure.The six main driving factors which impacted the upper reaches of Minjiang River were obtained by using the approach of factor analysis:the situation of eco-environmental background,population carrying capacity and structure level,water and soil losses,reclamation and use on land,industrial structure level,the level and structure for investment,which offered the scientific basis for the restoration at eco-environmental vulnerable area of the upper reaches of Minjiang River and the development of economical society.