| 一种城市热岛强度的计算方法——以合肥市为例 |
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| 引用本文： | 查良松,王莹莹.一种城市热岛强度的计算方法——以合肥市为例[J].科技导报(北京),2009,27(20):76-79. |
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| 作者姓名： | 查良松 王莹莹 |
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| 作者单位： | 安徽师范大学国土资源与旅游学院;GIS重点实验室; |
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| 基金项目： | 国家自然科学基金项目(40771207);;安徽省高校自然科学研究项目(2007jyxm214) |
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| 摘 要： | 城市热岛是指城市化过程中城区高空以及近地面大气温度高于城区以外郊区的现象。城市热岛强度是城市热场分布的重要表达手段,目前,对专门研究城市热岛强度的计算方法讨论较少。本文利用Landsat5数据,基于遥感相关理论,以合肥市为例,反演出城市地表亮温,同时引入城市形态分维理论,使用改进的半径法对合肥市的城市热场状况进行研究,发现亮温的水平分布在城市建成区与非城市建成区间有突变现象,并以此分析城市热力场的空间分布,得到热岛强度计算公式,从而得出城市热岛强度的表达方式。在城市热岛强度计算过程中,着重考虑了城市热场分布特征,克服了在研究城市热岛时寻找郊区气温值的困惑,这对于城市热岛强度的表达研究具有一定的指导意义。
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| 关 键 词： | 城市热岛强度 遥感 突变现象 |
A Calculation Method for Urban Heat Island Intensity:A Case Study on Hefei City |
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| ZHA Liangsong,WANG Yingying College of Territorial Resources , Tourism,Key Laboratory of GIS,Anhui Normal University,Wuhu ,Anhui Province,China.A Calculation Method for Urban Heat Island Intensity:A Case Study on Hefei City[J].Science & Technology Review,2009,27(20):76-79. |
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| Authors: | ZHA Liangsong WANG Yingying College of Territorial Resources Tourism Key Laboratory of GIS Anhui Normal University Wuhu Anhui Province China |
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| Institution: | ZHA Liangsong,WANG Yingying College of Territorial Resources , Tourism,Key Laboratory of GIS,Anhui Normal University,Wuhu 241003,Anhui Province,China |
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| Abstract: | Urban heat island is a phenomenon related with the fact that the urban upper air temperature is higher than the surrounding area.The intensity of the urban heat island is an important index for the urban heat environment.But there is few studies on the calculation of the urban heat island intensity at present.In this paper, the brightness temperature of the case image in Hefei city is calculated based on the theory of Remote Sensing.The urban construction land is considered at the same time.The spatial dist... |
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| Keywords: | urban heat island intensity remote sensing saltation |
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