土地覆盖
遥感
人口
卫星
归一化差异植被指数
人类住区
环境科学
卫星图像
地理
计算机科学
气象学
土地利用
地质学
气候变化
海洋学
土木工程
人口学
考古
航空航天工程
社会学
工程类
作者
Alimujiang Kasimu,R. Tateishi,Nguyen Thanh Hoan
标识
DOI:10.1109/urs.2009.5137493
摘要
This is study of urban characterization from coarse resolution satellite images. Urban environments are so heterogeneous. It is necessary to simplify them as combination of basic land cover materials in order to enable quantitative studies. A comparative analysis of three-component features (Population density, NDVI, DMSP) for 25 urban areas worldwide provides a physical basis of global urban characterization. The result of analysis indicate that the characteristics of there cities can be accurately described as linear combinations of population density, DMSP and vegetations end members within a two dimensional mixing space containing over 80% of variance in the observed data. Global urban characterizations provide a basis of mapping the spatial extent of human settlements using coarse resolution satellite imagery.
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