河北太行山区土地资源生态安全研究

本文在PSR模型的基础上,从土地自然资源现状、土地社会经济环境压力、人文响应三方面出发,选取与山区土地资源密切相关的27项因素构建指标体系,对河北太行山区土地资源生态安全进行评价。采用ArcView、ArcGis软件对河北太行山遥感图像进行处理,获取土地方面数据并结合其他统计数据,运用相关数学方法,计算研究区1987、2000年各县综合生态安全值,对生态安全状况进行安全度分区分析,研究认为,该区域土地资源生态安全状况处于较差状态,且局部有恶化趋势,进而剖析其主要制约因素,提出相应改善安全状况的建议。

Study on Ecological Security of Land Resources in TaiHang Mountain HeBei

Based on PSR model,the ecological security of mountainous land resources in HeBei TaiHang Mountain was evaluated from three aspects of nature,economy and society.27 indices of variable layers were choosed to construct the index system of ecological security evaluation of land resources which fit to Mountainous characteristics.Then every count was given a comprehensive evaluation in this Mountainous area on ecological security of land resources in 1987 and 2000.According to results,the security rate can be compartmentalized to different regions.The results show that the ecological security of mountainous land resources in HeBei TaiHang Mountain is in vulnerability state,and it is being a decreasing tendency.Moreover we go deep into analysis its main restrict factors.Finally,it gives corresponding suggestions in order to improve its Ecological Security status.