岷江上游生态环境脆弱性评价

发布时间：2018-07-05 13:17

本文选题：岷江上游 + 生态脆弱性　；参考：《长江流域资源与环境》2017年03期

【摘要】：生态环境脆弱性评价是全球生态问题和可持续发展研究中的重要内容之一。岷江上游因地质构造复杂、人地矛盾突出、生态系统异常脆弱和灵敏而备受关注。本文以岷江上游生态环境脆弱性为研究对象,选取证据权重法(WOE)进行滑坡脆弱性评价,层次分析法(AHP)进行水力侵蚀、景观破坏与污染脆弱性评价;在此基础上,进行了研究区各生态主题脆弱性的空间叠加分析;探讨了岷江上游生态环境脆弱性及其在不同影响因子作用下的空间分异特征。结果表明:研究区的滑坡脆弱性、水力侵蚀脆弱性、景观破坏与污染脆弱性均以轻微度为主,分别占研究区面积的80.43%、71.89%、75.55%;各生态环境主题脆弱性综合分析表明,54.70%的区域至少面临一种生态问题,面临两种及以上环境问题的区域占15.43%,同时面临三种环境问题的占1.35%。研究结果探讨了岷江上游生态环境存在的主要问题和影响因子,对岷江流域乃至长江流域的生态安全和可持续发展具有积极意义,未来应持续关注生态环境脆弱区的生态环境问题。
[Abstract]:Eco-environmental vulnerability assessment is one of the important contents in the study of global ecological problems and sustainable development. The upper reaches of Minjiang River have attracted much attention because of complex geological structure, prominent contradiction between man and land, and extremely fragile and sensitive ecosystem. In this paper, the vulnerability of ecological environment in the upper reaches of Minjiang River is studied. The method of evidence weight (WOE) is selected to evaluate the vulnerability of landslide, and the analytic hierarchy process (AHP) is used to evaluate the vulnerability of water erosion, landscape damage and pollution. The spatial superposition analysis of the vulnerability of each ecological theme in the study area was carried out, and the characteristics of the ecological environment vulnerability and its spatial differentiation under different influence factors in the upper reaches of Minjiang River were discussed. The results showed that the vulnerability of landslide, hydraulic erosion, landscape damage and pollution were mainly slight. The comprehensive analysis of the vulnerability of each ecological environment theme shows that 54.70% of the regions face at least one ecological problem, the areas facing two or more kinds of environmental problems account for 15.43%, and the areas facing three kinds of environmental problems account for 1.35%. The main problems and influencing factors of ecological environment in the upper reaches of Minjiang River are discussed, which is of positive significance to the ecological security and sustainable development of Minjiang River Basin and even the Yangtze River Basin. In the future, attention should be paid to the problem of ecological environment in fragile areas of ecological environment.
【作者单位】：四川师范大学地理与资源科学学院;
【基金】：国家科技支撑计划项目“南方红壤水土流失治理技术研究与示范”课题3“水土流失治理效果情景分析与评价”(2013BAC08B03-4)~~
【分类号】：X826

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