长沙市地表热力景观时空分异特征分析  

Analysis of Temporal and Spatial Differentiation Characteristics of Surface Thermal Landscape in Changsha City

作　　者：何炳伟 韩沁哲[2] He Bingwei;Han Qinzhe(Meteorological Bureau of Linli County,Linli,Hunan 415200,China;Meteorological Research Institute/Key Lab of Hunan Province for Meteorological Disaster Prevention and Reduction,Changsha,Hunan 410118,China)

机构地区：[1]湖南省临澧县气象局,湖南临澧415200 [2]湖南省气象科学研究所/气象防灾减灾湖南省重点实验室,湖南长沙410118

出　　处：《绿色科技》2022年第20期36-41,45,共7页Journal of Green Science and Technology

基　　金：湖南省气象局重点课题(编号:XQKJ18A003)。

摘　　要：以长沙市为研究区域,基于2005~2019年MODIS地表温度产品数据,选取景观指数分析了不同季相和昼夜间地表热力景观格局时空分异特征,并进一步探究了不同等级热力景观下不同土地利用类型景观格局特征规律与地表温度的影响关系。结果表明:①不同季节与昼夜间地表热力景观空间分布差异较大,夏季高温区最为集中;②中温区在长沙市地表热力景观中面积占比最大,地表热力景观聚集度指数差异显著,高温区聚集度指数整体上较高;③建设用地景观斑块聚集程度越高、面积占比越大,地表温度就越高;林地、草地和水体聚集程度越高、面积占比越大,可有效降低地表温度。研究结果可为管理决策部门改善城市热环境提供决策支持。Taking Changsha City as the research area,based on the MODIS surface temperature product data from 2005 to 2019,the landscape index was selected to analyze the temporal and spatial differentiation characteristics of the surface thermal landscape patterns for different seasons and day and night.Furthermore,the relationship between landscape pattern characteristics of different land use types and land surface temperature under different thermal landscape grades was studied:①The spatial distribution of surface thermal landscape varies greatly in different seasons between day and night,and the high-temperature areas in summer are the most concentrated.②The medium-temperature area accounts for the largest area in the surface thermal landscape of Changsha City;the surface thermal landscape aggregation index is significantly different.The high-temperature area is generally higher.③The higher the degree of aggregation of landscape patches of construction land,the larger the proportion of area and the higher the surface temperature.On the contrary,the higher the degree of aggregation of woodland and grassland,the larger the area and the more effective the surface temperature can be.The research results can provide decision support for management decision-making departments to regulate the urban thermal environment.

关 键 词：地表热力景观 景观指数 MODIS 长沙市 

分 类 号：P237[天文地球—摄影测量与遥感] TP79[天文地球—测绘科学与技术]