自然灾害胁迫下的岷江上游生态环境宜居性评价
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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)


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

    Abstract:

    Based on the traditional environmental factors of livability,hazard factors are introduced into theevaluation system of eco-environmental livability.The natural eco-environment livability is comprehensivelyevaluated 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 pointedout.Results show that in the study region,the areas of the livability classesⅣandⅤaccount for 12.66% and 8.07%,and the livability classesⅡandⅠ,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 theworst.The Shouxi sub-basin is the best livable place,whereas eco-environment livability in the ZagunaoRiver basin is the poorest.On the whole,the eco-environmental livability is poor in the upper reaches of theMinjiang River and its residential layout is irrational.So the governments should strengthen the preventionand reduction of disasters in the inhospitable areas.

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郭兵,陶和平,姜琳,史展,宋春风.自然灾害胁迫下的岷江上游生态环境宜居性评价[J].水土保持通报,2013,(1):124-128,138

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  • 收稿日期:2012-01-18
  • 最后修改日期:2012-03-23
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  • 在线发布日期: 2014-11-12
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