宁夏生态移民安置区生态风险及其空间分异研究

项目名称： 宁夏生态移民安置区生态风险及其空间分异研究

项目编号： No.41461039

项目类型： 地区科学基金项目

立项/批准年度： 2015

项目学科： 天文学、地球科学

项目作者： 王亚娟

作者单位： 宁夏大学

项目金额： 50万元

中文摘要： 本项目属地理学、生态学和环境科学等学科交叉研究领域。以宁夏十二五确定的生态移民安置区为研究对象，在科学划分生态移民安置区类型区和选择典型纯回族安置区、纯汉族安置区和回汉混居安置区样本的基础上，建立基于GIS和Zonal Statistics工具统计数据库。在系统分析与定量表征生态风险源与受体、暴露与危害关系的基础上，建立生态风险综合评价指标体系，构建面向生态移民安置区信息不确定性和模糊性的正态云模型和熵权法的综合评价模型，计算出研究区空间各点的综合生态风险值，绘制生态风险值分布图，对综合生态风险进行分级分类，划分出生态风险小区，通过 GIS 实现生态风险评价结果的可视化，反映和提供生态风险格局及其空间异质性的解释框架，进一步提出有针对性和差别化的生态风险管理对策，以期为研究区及类似地区生态移民安置区生态环境管理与生态安全建设提供科学的理论依据和决策支持。

中文关键词： 生态移民安置区；生态风险；空间分异；生态系统管理；地理信息系统

英文摘要： This study is the multi-knowledge crossed research realm which involves the geography,ecology and environmental science,etal.Regarding ecological migrant settlement region which includes Hui nationality settlement region,Han nationality settlement region,Hui and Han nationality settlement region defined by Ningxia Twelfth Five-Year Plan as the research subject,guided by the theory of regional ecological migrant and ecological risk management, establish statistics database based on GIS and Zonal Statistics.Systanatic analysis and quantitative ecological risk source and receptor,relation of expose and harm,establish ecological risk comprehensive evaluation index system,build comprehensive evaluation model of normal cloud model and entropy weight method faced information uncertainty and fuzziness,calculate the comprehensive ecological risk value,draw the distribution map,classify the comprehensive ecological risk,divide the ecological risk areas, realize visualization of evaluation results by GIS, reflect and provide explanatory framework of ecological risk pattern and spatial heterogeneity, put forward purposeful and differential ecological risk management countermeasure,provide scientific theoretical foundation of ecological environmental management and ecological security construction for study area and similar regions.

英文关键词： ecological migrant settlement region;ecological risk;spatial heterogeneity;ecological system management;geographic information system