自然灾害胁迫下的岷江上游生态环境宜居性评价  

Assessment of Eco-environment Livability in Upper Reaches of Minjiang River Under Stress of Natural Disasters

作　　者：郭兵[1,2] 陶和平[1] 姜琳[3] 史展[1,2] 宋春风[1,2] 

机构地区：[1]中国科学院水利部成都山地灾害与环境研究所,四川成都610041 [2]中国科学院大学,北京100049 [3]成都信息工程学院,四川成都610225

出　　处：《水土保持通报》2013年第1期124-128,138,共6页Bulletin of Soil and Water Conservation

基　　金：中国科学院知识创新工程重要方向项目"西南山区情势与资源环境安全战略研究"(KZCX2-YW-333);中国科学院西部行动计划项目"西藏生态安全屏障监测评估与关键技术示范"(KZCX2-XB3-08)

摘　　要：在传统的环境宜居性因子的基础上引入灾害因子,综合评价了岷江上游6个县市及5个自然流域的生态环境的宜居性。对当前的岷江上游的居民点布局作了简要的分析,结果表明,岷江上游属于宜居性Ⅳ、宜居性Ⅴ的地区分别占12.66%和8.07%,宜居性Ⅱ、宜居性Ⅰ的地区则分别占33.78%和21.23%。6个县市中都江堰市的总体生态环境宜居性最好,属于宜居性Ⅲ、宜居性Ⅳ、宜居性Ⅴ的地区占该县总面积的65.87%,茂县的整体环境宜居性最差,其中宜居性Ⅱ、宜居性Ⅰ的地区占该县总面积的84.06%。寿溪流域在岷江上游流域5个小流域中宜居性最好,杂谷脑河流域的生态环境宜居性最差。岷江上游生态环境宜居性总体上比较差,居民点布局不合理,因此应加强不适宜人居住地区的防灾减灾工作。Based on the traditional environmental factors of livability, hazard factors are introduced into the evaluation system of eco-environmental livability. The natural eco-environment livability is comprehensively evaluated for the upper reaches of the Minjiang River that is composed of six counties or five sub-basins. Besides, the layout of the settlements is briefly analyzed and the problems and countermeasures are pointed out. Results show that in the study region, the areas of the livability classes IVandV account for 12.66%o and 8.07%, and the livability classes Ⅱ and Ⅰ , 33.78% and 21.23%, respectively. Among the six counties, Dujiangyan City is the most livable place, whereas the environmental livability of Maoxian County is the worst. The Shouxi sub-basin is the best livable place, whereas eco-environment livability in the Zagunao River basin is the poorest. On the whole, the eco-environmental livability is poor in the upper reaches of the Minjiang River and its residential layout is irrational. So the governments should strengthen the prevention and reduction of disasters in the inhospitable areas.

关 键 词：生态环境宜居性 自然灾害 岷江上游 

分 类 号：K901.8[历史地理—人文地理学]