基于集对分析的矿区生态承载力定量评价

据矿区复合生态系统特点,采用主成分分析法和独立性分析法筛选指标,建立矿区生态承载力评价指标体系,并合理确定了评价等级标准。以民勤县红沙岗矿区为例,采用集对分析法进行矿区生态承载力评价,由平均联系度最大隶属原则确定生态承载力所处的级别。应用结果表明:由于红沙岗矿区所处区域环境背景特点和煤矿开采引起的一系列生态问题,生态承载力处于弱稳定、中等承载、较高压状态。通过对评价结果分析,指出了提高矿区生态承载力的发展对策,可供相关部门进行矿区生态恢复和制定适宜的发展战略借鉴和参考。

Study on Quantitative Evaluation of Ecological Carrying Capacity in Mining Areas Based on Set Pair Analysis

Based on the characteristics of compound ecosystem in a mining area in Minqin County,Gansu Province,in this study an evaluation index system of ecological carrying capacity is developed by applying Principal Component Analysis and independence analysis,and the rational standards of evaluation grades are established.A case study on the evaluation of ecological carrying capacity in the Hongshagang mining area in the county is carried out by applying set pair analysis,and the grades of ecological carrying capacity are classified based on the principle of maximal sub-ordination of the average connection.The results reveal that the ecological carrying capacity in the study area is in a status of infirm stability,moderate carrying capability and high pressure because of the background features of regional environment and a series of entironment problems caused by coal excavation.After analyzing the evaluation results,some measures are put forward for increasing the ecological carrying capacity in the Hongshagang mining area,which can be referred in conserving the entironment and working out the developmental strategy in the mining area.