基于GIS技术的辽宁沿海经济带生态安全空间动态评价研究——以大连为例

Research on the Spatial Dynamic Ecological Security Assessment for Liaoning Coastal Economical Region based on GIS Technology——A Case of Dalian

空间动态性研究可以有效解决区域生态安全的空间性、非线性和随机性等问题,从而完成区域生态安全评价与预测。研究基于GIS技术,首先,构建"驱动力—压力—暴露—敏感—适应—响应"(DPESAR)指标体系并搜集空间数据;其次,运用熵权法对生态安全指标赋权并进行标准化处理;第三,应用Arc GIS 10软件构建GRID数据库,并进行定量分析。结果显示,2009年至2011年大连中心城区的旅顺口区与主城区处于生态临界安全的范围,瓦房店、普兰店是属于生态不稳定的地区,庄河市与中心城区的金州区的生态安全指数是随机的。

Research on the spatial dynamics can effectively resolve the space, nonlinear and stochastic issues for regional ecologi- cal security and help complete the regional ecological security evaluation and prediction. The research is based on GIS technology; it firstly constructs the DPESAR indicator system and starts the data collection for the space; secondly, it applies the entropy method for the ecological security index empowerment and standardizes it ; thirdly, it constructs the Grid database by ArcGIS10 software and analy- ses it quantitatively; the results shows that Lvshunkou District and main urban area of central urban area of Dalian in 2009 to 2011 were in the critical range of ecological security, Wafangdian and Pulandian were in the unstable range of ecological security, and Zhuanghe City and the Jinzhou District of central urban area were in the stochastic status. So this paper can provide the reliable basis for the spa- tial change of regional ecological security study.