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近20年来重庆市主城区地表热岛的时空变化

韩贵锋 颜文涛 赵珂 叶林

韩贵锋, 颜文涛, 赵珂, 叶林. 近20年来重庆市主城区地表热岛的时空变化[J]. 环境科学研究, 2012, 25(6): 615-621.
引用本文: 韩贵锋, 颜文涛, 赵珂, 叶林. 近20年来重庆市主城区地表热岛的时空变化[J]. 环境科学研究, 2012, 25(6): 615-621.
HAN Gui feng, YAN Wen tao, ZHAO Ke, YE Lin. Spatial Temporal Changes of Surface Heat Island in the Central Area of Chongqing over the Past 20 Years[J]. Research of Environmental Sciences, 2012, 25(6): 615-621.
Citation: HAN Gui feng, YAN Wen tao, ZHAO Ke, YE Lin. Spatial Temporal Changes of Surface Heat Island in the Central Area of Chongqing over the Past 20 Years[J]. Research of Environmental Sciences, 2012, 25(6): 615-621.

近20年来重庆市主城区地表热岛的时空变化

Spatial Temporal Changes of Surface Heat Island in the Central Area of Chongqing over the Past 20 Years

  • 摘要: 为了揭示快速城市化地区热岛的时空变化特点,以重庆市主城区为例,利用1988─2009年共5个时期的TM/ETM+影像反演地表温度,分析了地表热岛和相对热岛强度的空间格局及其变化趋势. 结果表明:近20年来地表热岛的空间格局经历了集聚→较集聚→集聚的演变过程,热岛逐渐由重庆市老城区向外围城市组团转移;最大的相对热岛强度总体呈先增大后减小的变化趋势;老城区的相对热岛强度明显减弱,外围新兴城市组团相对热岛强度显著增加,沿长江和嘉陵江的开发建设导致滨江带相对热岛强度明显增强;相对热岛强度增强幅度与减弱幅度基本相当,大部分地区的相对热岛强度变化较平缓.相对热岛强度及其时空变化与重庆市扩张十分吻合,具有显著的城市组团式特点.

     

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  • 刊出日期:  2012-06-25

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