http://www.gissky.net- GIS空间站

非渗透表面丰度即非渗透表面含量百分比,是水文学中不透水层与遥感领域混合像元分解概念相结合的产物。在城市区域,非渗透表面多指房屋、道路、停车场等建设用地区。本文基于广州市海珠区2000年ETM+数据,首次采用单窗算法反演的地表温度数据与植被-非渗透表面-土壤(V-I-S)模型、归一化线性混合光谱模型(NSMA)相结合的方法提取研究区非渗透表面丰度值,并对提取结果进行49个300m×300m有效样区的抽样检验。结果表明抽样值与真实值之间存在10.03%的均方根误差以及2.65%的系统误差,从而进一步验证了三模型结合使用提取非渗透表面丰度的可行性。 更多还原

【Abstract】 The concept of impervious surface fraction has been defined as the percentage of impervious surface to the total and is widely used to indicate the surface structure in urban region for environmental studies to such important problems as the land surface runoff,urban heat islands effect,environment and water pollution.Using an ETM+ image of the Haizhu district,Guangzhou city in 2000 as the data source,we developed an approach to compute the fraction from the ETM image through combination of the ... 更多还原