| 1984—2014年北京地区不透水地表的时空变化及其温度效应研究 |
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| 引用本文： | 张稼乐,潘志华,匡文慧,潘宇鹰,韩国琳,王佳琳,黄娜,张子源,尹文娟.1984—2014年北京地区不透水地表的时空变化及其温度效应研究[J].气候变化研究进展,2020,16(3):296-305. |
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| 作者姓名： | 张稼乐 潘志华 匡文慧 潘宇鹰 韩国琳 王佳琳 黄娜 张子源 尹文娟 |
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| 作者单位： | 中国农业大学资源与环境学院,北京 100193;中国科学院地理与资源研究所,北京 100101 |
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| 基金项目： | 国家重点研发计划全球变化专项(2018YFA0606303) |
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| 摘 要： | 研究城市地表覆盖与地表温度（LST）的关系对改善城市生态环境具有重要科学意义。在Landsat TM数据支持下,利用线性光谱混合分析模型提取不透水地表信息,结合LST和地表热通量,分析不透水地表覆盖度（ISA）和LST的时空变化特征及其相互关系,探讨不透水地表对LST的影响机理。结果表明:1984—2014年北京不透水地表面积迅速增长,中覆盖度比例下降,高覆盖度比例增加;LST从市中心向郊区递减,高温区向外扩张;LST和ISA呈显著正相关,但不是简单的线性关系;ISA处于0.6~0.9时LST上升速率最快,减少ISA在此范围内的不透水地表集中分布可缓解高温区集中的现象。
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| 关 键 词： | 不透水地表 覆盖度 地表温度(LST) 时空特征 北京 |
| 收稿时间： | 2019-04-16 |
| 修稿时间： | 2019-06-13 |
Spatial-temporal change features of impervious surface and its effect on land surface temperature from 1984 to 2014 in Beijing |
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| Jia-Le ZHANG,Zhi-Hua PAN,Wen-Hui KUANG,Yu-Ying PAN,Guo-Lin HAN,Jia-Lin WANG,Na HUANG,Zi-Yuan ZHANG,Wen-Juan YIN.Spatial-temporal change features of impervious surface and its effect on land surface temperature from 1984 to 2014 in Beijing[J].Advances in Climate Change,2020,16(3):296-305. |
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| Authors: | Jia-Le ZHANG Zhi-Hua PAN Wen-Hui KUANG Yu-Ying PAN Guo-Lin HAN Jia-Lin WANG Na HUANG Zi-Yuan ZHANG Wen-Juan YIN |
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| Institution: | 1.College of Resources and Environmental Sciences, China Agricultural University, Beijing 100193, China2 Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China |
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| Abstract: | It is of great scientific significance to study the relationship between urban surface cover and land surface temperature (LST) for improving urban ecological environment. Based on the Landsat TM data, this paper uses the linear spectral hybrid analysis model to extract the impervious surface land information. Combined with the LST and surface heat flux, the spatial-temporal variation characteristics and inter relationships of the impervious surface area (ISA) and the LST are analyzed. The results show that the ISA of Beijing increased rapidly from 1984 to 2014. The medium coverage of ISA decreased, while high coverage increased remarkably. The LST decreased from the city center to the suburbs, and the high temperature area was expanding continuously. There was a significant positive correlation between the LST and ISA, and the rate of the LST rise was the fastest when ISA was at 0.6-0.9. So reducing ISA can alleviate the phenomenon of high temperature area concentration. |
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| Keywords: | Impervious surface area (ISA) Coverage Land surface temperature (LST) Spatial-temporal features Beijing |
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