长江上游重庆段流域生态风险评价——基于RRM模型  

An RRM-Based Ecological Risk Evaluation for the Chongqing Section of the Yangtze River Basin

作　　者：熊勤犁[1,2] 肖洋[1,2] 史雅娟[1] 吕永龙[1] 肖强[1] 欧阳志云[1] 

机构地区：[1]中国科学院生态环境研究中心城市与区域生态国家重点实验室,北京100085 [2]中国科学院研究生院,北京100039

出　　处：《西南大学学报（自然科学版）》2013年第11期141-146,共6页Journal of Southwest University(Natural Science Edition)

基　　金：国家国际科技合作专项项目:新型持久性污染物多介质扩散及其生态风险模拟(2012DFA91150);重庆市社会科学规划项目重庆市主要生态环境问题演变趋势与生态安全预警对策研究(2011YBSH051)

摘　　要：通过建立长江重庆段流域相对风险模型(RRM),探讨了快速城市化化对长江重庆段流域生态环境的影响.结果表明:2010年相较于2006年,长江重庆段流域的综合生态风险有所减小.综合生态风险的结果表明,尽管城市工业用地的潜在风险不断加大,但是环境保护措施,对风险防范意识的加强对缓解风险起到了显著的作用.尤其是在重庆市主城区所处的风险单元流域第3区,其生态风险值在2010年显著降低.但是相较2006年,2010年长江重庆市主城区下游流域的生态风险压力明显升高.In this study, an RRM （relative risk model） was established, with which the impact of rapid ur- banization on the eco-environment in the Chongqing section of the Yangtze River basin was evaluated. The results showed that compared with 2006, the environmental risk index （ERI） was reduced, to some extent, in 2010. A comprehensive assessment of environmental risks demonstrated that despite the increasing pressure of urban and industrial land use, the environmental protection measures adopted and the risk awareness improved dramatically mitigated the risks. In the 3rd sub-region of Chongqing, in particular, the ERI dropped significantly in 2010, compared to 2006. However, compared with 2006, the pressure of the downstream watershed of the urban area of the city increased significantly in 2010.

关 键 词：生态风险评价 长江流域 重庆 城市化 RRM 

分 类 号：X826[环境科学与工程—环境工程]