| 兰州中心城区用地扩展及其热岛响应的遥感分析 |
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| 引用本文： | 潘竟虎,韩文超.兰州中心城区用地扩展及其热岛响应的遥感分析[J].生态学杂志,2011,30(11). |
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| 作者姓名： | 潘竟虎 韩文超 |
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| 作者单位： | 西北师范大学地理与环境科学学院,兰州,730070 |
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| 基金项目： | 国家自然科学基金项目(41061017)资助 |
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| 摘 要： | 以兰州中心城区为研究区,以1978、1993、2001和2010年的Landsat MSS/TM/ETM+影像为数据源,采用NDBI-SAVI指数相结合的方法,提取建设用地信息,利用热红外波段的单窗算法反演城市地表温度.结合城市热岛比例指数和地表温度分级,定量研究城镇用地扩张对城市热环境的影响.结果表明:兰州中心城区建设用地在1978-2010年的30余年间面积由87.47 km2增加到172.61 km2,增幅近l倍.城市扩展与热岛扩展趋势具有空间一致性,在城市扩张的同时,城区地表温度逐渐上升,城市热岛面积不断扩大.
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| 关 键 词： | 城市扩张 热岛效应 遥感信息提取 兰州 |
Urban expansion and its heat island response in Lanzhou City based on remote sensing analysis |
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| PAN Jing-hu,HAN Wen-chao.Urban expansion and its heat island response in Lanzhou City based on remote sensing analysis[J].Chinese Journal of Ecology,2011,30(11). |
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| Authors: | PAN Jing-hu HAN Wen-chao |
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| Institution: | PAN Jing-hu**,HAN Wen-chao(College of Geographic and Environmental Science,Northwest Normal University,Lanzhou 730070,China) |
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| Abstract: | This paper quantitatively analyzed the effects of urban expansion on city thermal environment,taking the urban area of Lanzhou City as a case,and based on the 1978,1993,2001 and 2010 Landsat/TM and ETM+ images.The information of urban construction land was extracted by using NDBI-NDVI index,and the land surface temperature was retrieved via mono-window algorithm,with the urban heat-island ratio index and the land surface temperature grade maps built.In 1978-2010,the construction land in the central area of ... |
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| Keywords: | urban expansion heat island effect remote sensing information extraction Lanzhou |
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