基于GIS的辽河干流饮用水源地生态安全演变趋势  

Ecological security evolvement trend of drinking water source areas along Liaohe River

作　　者：王耕[1] 王利[1] 吴伟[2] 

机构地区：[1]辽宁师范大学城市与环境学院,辽宁大连116029 [2]大连理工大学环境与生命学院,辽宁大连116024

出　　处：《应用生态学报》2007年第11期2548-2553,共6页Chinese Journal of Applied Ecology

基　　金：国家自然科学基金项目(70073003);国家教育部博士点基金项目(20020141027);辽宁省教育厅青年基金资助项目(2004F010).

摘　　要：在调查辽河干流饮用水源地生态安全隐患因素并进行生态安全状态评价的基础上,选取辽宁省境内辽河干流饮用水源地共59个县市区,运用安全风险评价理论,借助GIS格网赋值技术,完成饮用水源地的生态安全演变趋势评价.结果表明:生态安全高隐患区(安全得分≤0.3)有19个,安全状态恶化演变趋势较大;生态安全中等隐患区(0.3<安全得分≤0.7)有32个,安全状态恶化演变趋势不大;生态安全低隐患区(安全得分>0.7)有8个,安全状态恶化演变趋势较小.根据评价结果提出了相应的生态保护措施.Based on the investigation of potential dangerous factors for the ecological security of drinking water source areas along Liaohe River, a total of 59 drinking water source counties along the River in Liaoning Province were selected, and their ecological security evolvement trend was evaluated by using the theories of safety risk assessment and the GIS grid techniques. The results indicated that among the 59 drinking water source counties, 19 counties were in high potential danger （ scores ≤0.3 ）, with their security status having a stronger deterioration trend, 32 counties were in medium potential danger （0. 3 〈 scores ≤0.7 ）, whose security status had no obvious deterioration, and 8 counties were in low potential danger （ scores 〉 0. 7）, with the security status less deteriorated. Based on the evaluation, corresponding countermeasures for ecological protection of these areas were proposed.

关 键 词：饮用水源地 生态安全演变 评价 保护 

分 类 号：X826[环境科学与工程—环境工程]