湖北省土地资源生态承载力评价

以湖北省为研究对象,运用综合指标法,考虑研究区域与土地资源密切相关的因素,基于PSR模型从压力、状态、响应3个方面构建研究区域评价指标体系,并采用主成分分析法确定指标权重;通过GIS技术获得研究区域的土地资源生态环境承载力评价结果,运用统计分析法计算研究范围市域尺度的土地资源生态环境承载力平均值,据此将该区域土地资源生态承载力划分为3种类型区——低承载力区、一般承载力区、高承载力区;最后,分析了湖北省土地资源生态承载力空间格局现状。结果表明:湖北省土地资源生态环境承载力空间分布呈现中西部低、东部高的特点,高承载力区位于山区;一般承载力区位于西北、西南、东北部;低承载力区位于中部平原区。

Evaluation of Ecological Carrying Capacity of Land Resources in Hubei Province

Taking Hubei Province as the research object,using the comprehensive index method to comprehensively consider the factors that were closely related to the study of regional land resources.Based on the PSR model,the regional evaluation index system was constructed from three aspects of pressure,state and response,and principal component analysis to determine the index weight.The evaluation results of the ecological environment carrying capacity of land resources in the study area were obtained by GIS technology.Based on the statistical analysis method,the average carrying capacity of land resources ecological environment was calculated,and the ecological carrying capacity of land resources in the area was divided into three types-low bearing capacity area,general bearing capacity area and high bearing capacity.Finally,the spatial pattern of the ecological carrying capacity of land resources in Hubei Province was analyzed.The results showed that:The spatial distribution of the carrying capacity of land resources in Hubei Province is low in the middle and west and high in the east.High carrying capacity area is located in the mountainous area;the general carrying capacity area is located in the northwest,southwest and northeast;low carrying capacity area is located in the central plains region.