典型生态脆弱区人类活动强度空间模拟与应用

Spatial Simulation and Application of Human Activity Intensity on Vulnerable Ecological Region

人类活动强度的定量化和空间化表达是评价人类活动对生态环境影响的基础,从人类活动基础、人类活动方式、人类活动结果3个方面构建人类活动强度评价指标体系。借助GIS空间插值、缓冲区分析、空间叠置法等方法 ,综合运用统计、遥感、地形和交通数据,对宁夏中部典型生态脆弱区人类活动强度进行空间模拟研究。结果表明:该方法可以较为真实地反映人类活动强度及其空间分布特征;研究区人类活动强度空间分异明显,整体呈现北高南低的分布状态。

The quantify and space realization of human activity intensity is the basis that evaluates the effect of human activity on the ecological environment,referring the basis,way and result of human activity to set up the comprehensive evaluation index system. A new method that GIS combines spatial interpolation, buffer analysis and spatial overlap method is proposed by using the statistic data, RS data,traffic data and terrain data, and is used to simulate the spatial distribution of human activity intensity of vulnerable ecological region in middle Ningxia. The results showed that：the method is highly effective in evaluating the regional human activity intensity and can serve as a technique for related researches ;the regional difference is obvious and present a pattern of ＂strong in the North and weak in the South＂.