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基于DPSIR模型的土地生态安全动态评价研究——以甘肃省泾川县为例

发表时间:2013-11-15  浏览量:1070  下载量:311
全部作者: 庞家幸,陈兴鹏,王惠榆
作者单位: 兰州大学资源环境学院
摘 要: 根据泾川县的土地生态现状,运用“驱动力-压力-状态-影响-响应”(driving force-pressure-status-influence-response, DPSIR)模型建立5个准则层、23个指标的土地生态安全综合评价体系,采用层次分析法(analytic hierarchy process, AHP)和熵权法的综合权重确定评价指标的权重,同时计算各个准则层的综合评价指数,以此综合评价泾川县的土地生态安全状况。分析显示:泾川县的土地生态安全度由2001年的0.370 804上升到2011年的0.733 434,安全等级由“敏感级”状态变化为“安全级”状态的动态变化过程;同时,泾川县近11年的生态安全可以划分为4个阶段。各个准则层中响应值对土地生态安全状态起主要作用。
关 键 词: 人文地理学;生态安全;综合赋权;驱动力-压力-状态-影响-响应;泾川县
Title: Dynamic evaluation of land ecological security based on DPSIR model: a case study on Jingchuan county of Gansu province
Author: PANG Jiaxing, CHEN Xingpeng, WANG Huiy
Organization: School of Resources and Environmental Sciences, Lanzhou University
Abstract: According to Jingchuan county land ecological status, using driving force-pressure-status-influence-response (DPSIR) model establishment 5 rule layer and 23 indexes to assess land ecological safety, adopting analytic hierarchy process (AHP) and entropy-weight method to determining the evaluation weight of index, calculation the various of criteria comprehensive evaluation index, comprehensive evaluation land ecological security of Jingchuan county. Analysis display: Jingchuan county land ecological security increasing from 0.370 804 in 2001 to 0.733 434 in 2011, ecological security level changing from “sensitive” status to “safety” state dynamic change process; Jingchuan county the ecological safety can be divided into 4 stages in the last 11 years. Each criterion layer response value play a crucial role in the land ecological security state.
Key words: human geography; ecological safet; comprehensive weight; driving force-pressure-status-influence-response; Jingchuan county
发表期数: 2013年11月第21期
引用格式: 庞家幸,陈兴鹏,王惠榆. 基于DPSIR模型的土地生态安全动态评价研究——以甘肃省泾川县为例[J]. 中国科技论文在线精品论文,2013,6(21):2083-2089.
 
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