小流域生态安全动态评估方法体系研究——以思蒙河小流域丹棱段为例  

Methodology for Dynamic Assessment of Ecological Security of Small Watershed——Taking Danlin Section of Simeng Watershed as an Example

作　　者：田晓刚[1] 谢强[1] 翟世明 刘馨越 

机构地区：[1]四川省环境保护科学研究院,成都610041 [2]成都市锦江区环保局,成都610000

出　　处：《四川环境》2015年第4期42-49,共8页Sichuan Environment

摘　　要：针对小流域生态环境动态变化的特点以及区域生态安全评估的基本特征,基于层次分析法、DPSR概念模型、灰色靶分析以及模糊数学理论,通过算法的耦合及改进,开发了小流域生态安全动态评估方法体系。思蒙河是四川省重点整治的32条小流域之一,通过将该方法体系应用于2013年思蒙河小流域丹棱段的生态安全评估,验证了方法体系的系统性、适应性以及动态性。结果表明:2013年思蒙河小流域丹棱段控制单元整体的生态安全处于较不安全等级,生态环境恶化趋势尚未得到有效遏制;在未来思蒙河小流域丹棱段的生态保护及环境治理中,畜禽粪便的综合利用、化肥施用量的控制、水环境污染的综合治理以及小流域生态景观的打造与优化等四个方面的措施需要进一步加强。This study developed a systematic methodology for dynamic assessment of ecological security of small watershed, base on analytic hierarchy process, DPSR conception model, grey target model and fuzzy mathematic theory, considering the characteristics of both dynamic change of small watershed and assessment of regional ecological security. Simeng river is one of the 32 key small watersheds for pollution control in Sichuan province. This systematic methodology was applied for assessment of ecological security of Danlin section of Simeng watershed. The results showed that ： the whole Danlin section of Simeng watershed was leveled to the less safe class in 2013, the deterioration of the eco - environment is not improved recent years. Comprehensive utilization of animal manure, controlling of chemical fertilizer, improvement of water environmental quality and ecological landscape would be the four key measurements for improving ecological security of Danlin section of Simeng watershed.

关 键 词：生态安全 动态评估方法体系 小流域 思蒙河丹棱段 

分 类 号：X522[环境科学与工程—环境工程]