基于水文地貌分类的湿地干扰评价研究——以挠力河流域为例  

Assessment of Wetland Disturbance Based on Hydrogeomorphic Classification—A Case Study of Naoli River Valley.

作　　者：李玉凤[1] 刘红玉[1] 

机构地区：[1]南京师范大学地理科学学院/江苏省环境演变与生态建设重点实验室,江苏南京210097

出　　处：《生态与农村环境学报》2008年第1期15-19,54,共6页Journal of Ecology and Rural Environment

基　　金：国家自然科学基金(40471003);南京师范大学高层次人才基金(2005105XGQ2B68)

摘　　要：基于湿地功能的水文地貌分类是一种评价湿地理化性质、生态功能及人类干扰的分类方法。借助ARCGIS软件的空间分析功能,采用层次分析法和模糊优选评价模型对挠力河流域湿地不同的水文地貌单元进行分类评价。结果显示,挠力河流域平原湿地生态区域可以划分为河岸带、低洼地、倾斜地和微高地4个水文地貌单元,人类干扰强度分别为0.043 2、0.093 0、0.397 6、0.937 4。其中河岸带和低洼地为轻干扰区,占湿地总面积50.09%;倾斜地为中度干扰区,占湿地总面积17.42%;微高地为严重干扰区,占湿地总面积32.49%。目前,湿地功能尚处于较好状态。Function-based hydrogeomorphic classification of wetlands is an approach to evaluation of physical and chemical properties, ecological functions and human disturbance of wetlands. With the aid of the spatial analysis function of the ARCGIS software （ version 9.0）, wetlands in the Naoli River Valley were evaluated and classified into hydrogeomorphic units, using analytic hierarchy process and fuzzy selection theoretic model. Results show that the wetland ecoregions in the Naoli River Valley plain could be sorted into categories, i. e. ,riverine, depression, slope and microknoll and that their human disturbance intensity were 0.043 2, 0. 093 0, 0.397 6 and 0.937 4, respectively, showing an rising trend. Riverine and depression, light in human disturbance, accounted for 50.09% of the total acreage of wetlands, slope, moderate, for 17.42% and microknoll, severe, for 32.49%. Currently, the wetland stays good in function.

关 键 词：水文地貌分类 层次分析法 模糊优选模型 湿地干扰评价 

分 类 号：X171[环境科学与工程—环境科学]