摘要
本文以西昌市主城区及其周围乡镇为研究区域,利用2000,2005,2009和2014年3月获得的4期遥感影像,通过地表温度反演获得地表温度,研究西昌市的温度的年度变化及空间分布差异,同时利用这4幅影像,采用最大似然法分类获得研究区4期的土地利用类型及变化,分析西昌市城市热岛效应的驱动因素。结果表明,研究区在2000,2005,2009和2014年的平均温度分别为21.31,24.01,21.63和21.68℃,变化幅度不显著。总体来说,高温区主要分布在西昌市主城区、青山机场、高速公路及交通要道附近且范围在不断扩大,极高温区出现在城南的经久乡工业园区和龙窝山中的垃圾焚烧点;琼海北部的川兴镇的总体升温现象非常明显。2000年到2014年,建筑用地、水体和植被面积分别增加了52.15,1.98和23.48 km2,农用地和裸地分别减少了7.74 km2和61.31 km2,其中变化最明显的是城南经久乡工业园区攀钢钒钛冶炼厂的建立,使得建筑用地直接替换了原来的植被与裸地的地表覆盖情况。温度变化与水体、农用地和植被之间的相关性分别为0.76,-0.99和0.55,有较高的相关性。城区与琼海和川兴镇的平均温度差值的相关性分别为:0.656和0.976,说明琼海和川兴镇对整体研究区域和西昌市的温度影响较大。
In this article,using the remote sensing image data from the years of 2000,2005,2009 and March 2014,and taking Xichang City and its surrounding villages and towns as an example,we obtained the surface temperature through the land surface temperature inversion.The purpose of this research is to investigate the spatial distribution difference and annual temperature change pattern in Xichang,use the four effects at the same time,employ the maximum likelihood classifier to examine land use types and changes,and analyze the driving factors of urban heat island effects.Our results indicate that the average temperature in the studied area was 21.31,24.01,21.63,and 21.68℃in 2000,2005,2009 and 2014,respectively,with no significant change observed.Overall,the high-temperature area is mainly distributed around the main urban area in Xichang city,which are Qingshan airport,expressway and major traffic routes,with their ranges constantly expanding.Extremely high-temperature area was found to be in the industrial park of Jiuxiang in the south of the city as well as in the waste incineration point in Longwo mountain.The general warming phenomenon in the town of Chuanxing in the north of Qionghai is markedly apparent.The construction land,water body,and vegetation area increased by 52.15,1.98 and 23.48 km^2,respectively,and agricultural land and bare land were decreased by 7.74 km^2 and 61.31 km^2,respectively,from 2000 to 2014.The most significant change was the construction of smelters in Jingjiu town industrial park in the south of the city,which were originated from the vegetation and bare land cover.The correlation of the temperature change with water body,agricultural land and vegetation was 0.76,-0.99,and 0.55,respectively,showing strong correlations with these factors.The correlation between the urban area and Qionghai and Chuanxing towns was 0.656 and 0.976,respectively,indicating that Qionghai and Chuanxing towns had a greater impact on the overall studied area and the temperature change in Xichang.
作者
阿木拉堵
许斌
李翠琳
陈晨
钟成
李卉
AMU Ladu;XU Bin;LI Cui-lin;CHEN Chen;ZHONG Cheng;LI Hui(School of Earth Science,China University of Geosciences (Wuhan),Wuhan 430074,China;Three Gorges Research Center for Geo-Hazard,China University of Geosciences (Wuhan),Wuhan 430074,China;School of Geography and Resource Science,Neijiang Normal University,Neijiang 641100,China;School of Mechanical Electrical and Information Engineering,Hubei Business College,Wuhan 430079,China)
出处
《湖南师范大学自然科学学报》
CAS
北大核心
2019年第2期16-22,共7页
Journal of Natural Science of Hunan Normal University
基金
国家自然科学基金资助项目(41772352)
中央高校基本科研业务费专项资金资助项目(CUGQYZX1746)
关键词
西昌市
城市热岛
遥感影像
地表温度反演
土地利用类型
Xichang city
urban heat island effect
remote sensing image
surface temperature inversion
land use type
