基于TM数据的合肥市城市热岛效应研究
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摘要
城市热岛的空间分布与其下垫面环境极其相关。基于Landsat TM数据反演出合肥市市区地表温度;并分析合肥城市热岛分布、变化情况以及城市地表温度与其下垫面土地覆盖类型之间的关系。对合肥市市区2007年7月17日的地表温度分布图的分区统计显示出较大的温度差异:城镇用地具有高的平均温度(31.19℃),自然地表具有较低的平均温度(30.15℃),而水体的平均温度更低(26.88℃)。分别用%ISA(不透水面率)、NDVI值和MNDWI值来提取城市的不透水面、植被和水体信息;并对地表温度与%ISA、NDVI、MNDWI进行回归分析。结果表明,地表温度与%ISA和NDVI值有较好的相关性。
The Spatial distribution of urban heat island is closely related to city underlying surface. Land surface temperature of Hefei city was retrieved based on Landsat TM data,and the relationship between characteristic land uses and land surface temperature was analyzed. Zonal statistics on land surface temperature distribution image of Hefei on July 17 th 2007; revealed statistically significant differences between high average temperature for urban land use( 31. 19 ℃),and low average temperature for natural surfaces( 30. 15 ℃) and water bodies( 26. 88℃). Furthermore,% ISA( the percentage of impervious surface area),NDVI value,MNDWI value was used to extract the impervious surface rates of city,vegetation and water,the relationship between land surface temperature and impervious surface rate,NDVI,MNDWI was analyzed by the regression analysis. Finally,some measures to help relieve the urban heat island effect for the future development of Hefei are put forward.
The Spatial distribution of urban heat island is closely related to city underlying surface. Land surface temperature of Hefei city was retrieved based on Landsat TM data,and the relationship between characteristic land uses and land surface temperature was analyzed. Zonal statistics on land surface temperature distribution image of Hefei on July 17 th 2007; revealed statistically significant differences between high average temperature for urban land use( 31. 19 ℃),and low average temperature for natural surfaces( 30. 15 ℃) and water bodies( 26. 88℃). Furthermore,% ISA( the percentage of impervious surface area),NDVI value,MNDWI value was used to extract the impervious surface rates of city,vegetation and water,the relationship between land surface temperature and impervious surface rate,NDVI,MNDWI was analyzed by the regression analysis. Finally,some measures to help relieve the urban heat island effect for the future development of Hefei are put forward.
引文
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2 Rinner C,Hussain M.Toronto’s urban heat island-exploring the relationship between land use and surface temperature.Remote Sensing,2011;3(6):1251—1265
3 李昕瑜,杜培军,阿里木·赛买提.南京市地表参数变化与热岛效应时空分析.国土资源遥感,2014;26(2):177—183Li Xinyu,Du Peijun,Samat A.Spatial-temporal analysis of urban heat island effect and surface parameters variation in Nanjing city.Remote Sensing for Land&Resources,2014;26(2):177—183
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7 涂梨平,周斌.利用Landsat/TM热红外数据进行陆面温度反演的比较.科技通报,2007;23(3):326—331Tu Liping,Zhou Bin.A comparative study of algorithm for estimating land surface temperature from landsat/TM data.Bulletin of Science and Technology,2007;23(3):326—331
8 Mu珘noz J,Sobrino.A generalized single-channel method for retrieving land surface temperature from remote sensing data.Journal of Geophysical Research,2003;108(D22):4688—4695
9 张兆明,何国金,肖荣波,等.北京市热岛演变遥感研究.遥感信息,2005;6:46—48Zhang Zhaoming,He Guojin,Xiao Rongbo,et al.A study of urban heat island changes of Beijing city based on remote sensing.Remote Sensing Information,2005;6:46—48
10 姚玉龙,刘普幸,陈丽丽,等.近30年来合肥市城市扩展遥感分析.经济地理,2013;33(9):65—72Yao Yulong,Liu Puxing,Chen Lili,et al.Urban expansion analysis of Hefei city in the last 30 years by using remote sensing.Economic Geography,2013;33(9):65—72
11 严平,杨书运,王相文,等.合肥市城市热岛强度及绿化效应.合肥工业大学学报,2000;32(3):348—352Yan Ping,Yang Shuyun,Wang Xiangwen,et al.Effect of the urban heat island and greening of Hefei.Journal of Hefei University of Technology,2000;32(3):348—352
12 孟宪磊.不透水面、植被、水体与城市热岛关系的多尺度研究.上海:华东师范大学,2010Meng Xianlei.Multi-scale research about relationship between urban heat effect and impervious surface area,vegetation and water.Shanghai:East China Normal University,2010
2 Rinner C,Hussain M.Toronto’s urban heat island-exploring the relationship between land use and surface temperature.Remote Sensing,2011;3(6):1251—1265
3 李昕瑜,杜培军,阿里木·赛买提.南京市地表参数变化与热岛效应时空分析.国土资源遥感,2014;26(2):177—183Li Xinyu,Du Peijun,Samat A.Spatial-temporal analysis of urban heat island effect and surface parameters variation in Nanjing city.Remote Sensing for Land&Resources,2014;26(2):177—183
4 张好,徐涵秋,李乐,等.成都市热岛效应与城市空间发展关系分析.地球信息科学学报,2014;16(1):70—78Zhang Hao,Xu Hanqiu,Li Le et al.Analysis of the relationship between urban heat island effect and urban expansion in Chengdu,China.Journal of Geo-informations Science,2014;16(1):70—78
5 Rao P K.Remote sensing of urban heat islands from an environmental satellite.Bulletin of the American Meteorological Society,1972,53:647 —648
6 覃志豪,李文娟,徐斌,等.陆地卫星TM6波段范围内地表比辐射率的估计.国土资源遥感,2004;9:28—41Qin Zhihao,LI Wenjuan,Xu Bin,et al.The estimation of land surface emissivity for landsat TM6.Remote Sensing for Land&Resources,2004;9:28—41
7 涂梨平,周斌.利用Landsat/TM热红外数据进行陆面温度反演的比较.科技通报,2007;23(3):326—331Tu Liping,Zhou Bin.A comparative study of algorithm for estimating land surface temperature from landsat/TM data.Bulletin of Science and Technology,2007;23(3):326—331
8 Mu珘noz J,Sobrino.A generalized single-channel method for retrieving land surface temperature from remote sensing data.Journal of Geophysical Research,2003;108(D22):4688—4695
9 张兆明,何国金,肖荣波,等.北京市热岛演变遥感研究.遥感信息,2005;6:46—48Zhang Zhaoming,He Guojin,Xiao Rongbo,et al.A study of urban heat island changes of Beijing city based on remote sensing.Remote Sensing Information,2005;6:46—48
10 姚玉龙,刘普幸,陈丽丽,等.近30年来合肥市城市扩展遥感分析.经济地理,2013;33(9):65—72Yao Yulong,Liu Puxing,Chen Lili,et al.Urban expansion analysis of Hefei city in the last 30 years by using remote sensing.Economic Geography,2013;33(9):65—72
11 严平,杨书运,王相文,等.合肥市城市热岛强度及绿化效应.合肥工业大学学报,2000;32(3):348—352Yan Ping,Yang Shuyun,Wang Xiangwen,et al.Effect of the urban heat island and greening of Hefei.Journal of Hefei University of Technology,2000;32(3):348—352
12 孟宪磊.不透水面、植被、水体与城市热岛关系的多尺度研究.上海:华东师范大学,2010Meng Xianlei.Multi-scale research about relationship between urban heat effect and impervious surface area,vegetation and water.Shanghai:East China Normal University,2010
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