摘要
目前为止,生态风险评估还没有一套完整的方法体系。本文以我国最大的内陆河-塔里木河下游区段为研究区域,将遥感、地理信息系统等先进技术手段与模糊数学方法相结合,根据ERA框架和层次分析思想建立塔河下游植被的生态风险评估指标,运用模糊综合评判的方法进行塔河下游植被生态风险的遥感定量评估;在评估结果的基础上进行可视化分析。结果表明:在流域生态风险评估缺乏有效的定量评估方法的情况下,Fuzzy集合论与AH P方法结合的模糊综合评判方法是可行的,具有较高的科学性;运用遥感、地理信息系统等先进的技术手段,实现了评估结果的定性、定量和可视化。
There still being short of a set of integrated method to assess ecological risk at present. Taking the lower breaches of Tarim river, the biggest continental river in China, as study area, a vegetation ecological risk assessment was accomplished based on fuzzy synthetic evaluation and remote sensing and geographic information system. The conceptual frame of ERA and ideology of analytic hierarchy process （AHP） were used to establish the index system in the process of assessment. On the basis of the results from ecological risk assessment, the visual analysis was processed. The results showed that it is possible and be of scientific value to do fuzzy integration evaluation based on the fussy sets theory and AHP method. At the same time, the qualitative, quantitative and visual assessment results is realized by the advanced technique of RS and GIS.
出处
《测绘科学》
CSCD
北大核心
2009年第3期28-30,18,共4页
Science of Surveying and Mapping
基金
西华师范大学科研启动基金(05B050)
国家重大工程项目“塔里木河水量调度管理信息系统”资助
四川省教育厅科研基金(07ZC052)
关键词
生态风险
遥感
地理信息系统
模糊综合评估
ecological risk
remote sensing
geographic information system
fuzzy synthetic evaluation
