信阳师范学院学报（自然科学版）Issue(1)：148-151,156,5.DOI:10.3969/j.issn.1003-0972.2016.01.035
城市不透水面信息提取及水环境效应分析--以武汉市江南三区为例
Urban Impervious Surface Extraction and Its Effect on Water Environment---A case study in three districts of Wuhan city
摘要
Abstract
Using ETM + and Landsat8 data ,three south districts in Wuhan city were chosen as the research area .The impervious surface changes on the space and time was estimated using the decomposition model of mixed pixels ,and the related effect on water environment was analyzed .Through the MNF transform and PPI index calculation ,four kinds of spectral endmembers including high and low albedo ground ,vegetation and soil were identified .The new band of Landsat8:the Cirrus was used to remove the “noise” such as cloud ,soil , sand ,and MNDWI index was used to remove water area .Through the addition of high and low albedo compo‐nents ,the distribution of impervious surface could be gotten .The result showed that in the past 14 years ,the coverage of impervious surface appeared as radial expansion with development of urbanization due to filling in the lake and reclamation .Area increased 52 6. km2 ;no matter from the perspective of short‐term or long‐term , impervious surface deeply affected the hydrological environment of urban areas ,including surface runoff mode , water cycle process ,and the local microclimate;in addition ,impervious surface also had a great influence on non‐point source pollution in urban areas .关键词
Landsat8/光谱混合分解模型/不透水面/水环境效应Key words
Landsat8/decomposition model of mixed pixels/impervious surface/water environment effect分类
信息技术与安全科学引用本文复制引用
罗智勇,王明珠,陈婉佳..城市不透水面信息提取及水环境效应分析--以武汉市江南三区为例[J].信阳师范学院学报（自然科学版）,2016,(1):148-151,156,5.基金项目
四川省高等教育质量工程子项目 （）
