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摘要： 以杭州市中心城区为研究对象，基于ASTER热红外遥感数据反演杭州市中心城区地表温度、提取热环境边界，结合Landsat8 OLI数据进行土地利用分类来提取不透水面和植被信息。在此基础上主要进行以下两方面研究：通过均值—标准差法提取杭州市热岛和冷岛边界，对比分析热岛和冷岛区内的景观模式差异，识别对杭州市中心城区地表温度影响最大的地物；使用空间梯度分析法来定量揭示杭州市地表温度与植被、不透水面的关系，并分析杭州市地表温度的空间分布特征。结果表明：①热岛和冷岛区域内存在较大的景观模式差异，热岛区域内不透水面对温度变化影响最大，而冷岛区域内植被对杭州市中心城区地表温度影响最为明显，且降温效果大于水体；②随着与市中心距离的增加，地表温度平均值与不透水面密度趋势线走向基本一致(正相关)，与植被密度趋势线走向大致相反(负相关)，且不透水面对地表温度的增温效应大于植被的冷却效应。 关键词： ASTER遥感;  地表温度;  热/冷岛;  景观特征;  杭州     Abstract: Rapid urbanization has significant contributions to the Surface Urban Heat Island (SUHI).Analyzing the SUHI distribution and its impact factors using remote sensing data has received increasing attentions in the past decades，whereas few study has investigated that of the surface Urban Heat Sink Island (SUHI).The paper selects Hangzhou metropolis as a case study to explore SUHI/SUHS spatial patterns and its causes.We first retrieve the Land Surface Temperature (LST) using ASTER thermal infrared remote sensing imagery and extract the region of SUHI/SUHS using the Mean\|Standard deviation method.Landsat8 OLI data is used to classify land use and extract both impervious surface and vegetation information.After that，different landscape patterns within SUHI/SUHS area are analyzed and quantified by using several selected landscape index.The largest impact factors in SUHI/SUHS areas are identified.Finally，we analyze the spatial characteristics of LST using the spatial gradient analysis method，and reveal its relationship with vegetation and impervious surface.The results show that：(1) a large landscape pattern difference exists within SUHI/SUHS area；the impervious surface has the greatest impact on LST of the SUHI area，whereas the vegetation has more obviously cooling effect on LST of the SUHS area than the water body；(2) with the increasing distance from the city center，the same trend was found between the mean LST values and the impervious surface density (positive correlations)，whereas the opposite trend between the mean LST values and the vegetation density (negative correlations).And the warming effect of impervious surface is greater than the cooling effect of vegetation in Hangzhou.

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