摘要
以石头口门水库水源地为研究区域,将生态风险评价引入水库水源地评价中,从自然条件和人为干扰状况出发,根据生态风险评价框架和层次分析思想建立石头口门水库水源地生态风险评价指标体系。在研究区历史资料考证和野外考察的基础上,筛选出点源污染、面源污染及干旱作为风险源。结果表明,石头口门水库水源地的生态风险分布具有明显的空间差异性。研究还发现,对石头口门水库水源地生态风险值贡献较大的因子为N元素和P元素,二者的权重分别为0.224 7和0.195 4。研究结果可为环境管理和生态风险决策提供数量化的理论依据和数据支持。
By developing an evaluation index system and applying of analytic hierarchy process（AHP） comprehensive evaluation,an ecological risk assessment of the ecosystems in the Shitoukoumen Reservoir basin was carried out with considerations of natural conditions and human disturbance of the study area.Based on historical documents and field survey,three factors including point source pollution,non-point source pollution and drought were selected as risk sources.The results show that ecological risks of the basin displayed substantial spatial variability.The key ecological risk sources were total nitrogen and phosphorus in the water,with weight coefficients of 0.224 7 and 0.194 5,respectively.The results of this study provided quantitatively a theoretic basis and data support for the environmental management and ecological risk decision-making.
出处
《水土保持通报》
CSCD
北大核心
2011年第1期211-214,共4页
Bulletin of Soil and Water Conservation
基金
"973"国家重点基础研究发展规划项目"湿地生态系统服务功能形成机理与区域效应"(2009CB421103)
中国科学院知识创新工程重要方向项目"三江平原农业开发与湿地保育的水资源可持续利用"(KZCX2-YW-Q06-03)
关键词
石头口门水库
生态风险评价
水源地
Shitoukoumen Reservoir
ecological risk assessment
water source
