摘要
随着城市扩张,不透水面增加,热岛现象日渐凸显,对生产生活造成负面影响。以2002-2017年3期Landsat遥感影像反演泉州主城区地表温度、植被指数、建筑物指数,通过均值-标准差法对地表温度进行热岛分级,分析了热岛与植被指数、建筑用地的数量关系及发展趋势。结果表明:①地表温度与植被指数呈中等负相关关系,Pearson相关系数均值为-0.54,地表温度与城市建筑物指数呈显著线性关系,Pearson相关系数均值为0.82;②通过均值-标准差法对地表温度分级,2个城区热岛面积均呈上升趋势,鲤城区、丰泽区热岛区域面积分别上升30.33%、8.59%;③热岛区域与城区建设用地发展趋势一致,鲤城区热岛区域受建筑物指数影响较大,丰泽区受植被覆盖与水域影响,热岛效应减弱。
As the city expands and the impervious surface increases,the heat island phenomenon becomes increasingly prominent, which has a negative impact on production and life.The Landsat remote sensing image of 2002-2017 was used to invert the surface temperature,vegetation index and building index of Quanzhou's main urban area.The mean-standard deviation method was used to classify the surface temperature of the heat island.The relationship among the heat island and the vegetation index and the construction land as well as development trends were analyzed.The results show that:①The surface temperature has a moderately negative correlation with the vegetation index,and the Pearson correlation coefficient is -0.54;the surface temperature has a significant linear relationship with the urban building index,and the Pearson correlation coefficient has a mean value of 0.82.②The surface temperature is graded by the mean-standard deviation method.The area of the heat islands in the two urban areas is increasing.The area of the heat islands in the Wucheng District and Fengze District increased by 30.33% and 8.59% respectively.③ The development trend of the heat island area and the urban construction land is the same.The heat island area in the urban area is greatly affected by the building index.The Fengze area is affected by the vegetation cover and water area,and the heat island effect is weakened.
作者
杨永健
李洪忠
钟舒怡
YANG Yong-jian;LI Hong-zhong;ZHONG Shu-yi(Chang’an University,School of Environmental Science and Engineering,Xi’an 710005,China;Center for Geo-Spatial Information,Shenzhen Institutes of Advanced Technology,CAS,Shenzhen 518055,China)
出处
《软件导刊》
2019年第5期187-191,I0001,共6页
Software Guide
关键词
热岛效应
遥感技术
城市热岛
线性拟合
heat island effect
remote sensing
urban heat island
linear fit
