基于夜间灯光数据的江西省人为热排放与夜间地表温度的相关性分析  

Correlation analysis between anthropogenic heat emission and nighttime land surface temperature in Jiangxi based on nighttime lights

作　　者：陈诚诚 刘传立[1] CHEN Chengcheng;LIU Chuanli(School of Civil and Surveying&Mapping Engineering,Jiangxi University of Science and Technology,Ganzhou 341000,China)

机构地区：[1]江西理工大学土木与测绘工程学院,江西赣州341000

出　　处：《桂林理工大学学报》2023年第3期458-467,共10页Journal of Guilin University of Technology

基　　金：国家自然科学基金地区基金项目(41561091);江西省教育厅科学技术研究项目(GJJ150663;GJJ150629)。

摘　　要：基于自编码器处理的江西省2005—2020年的夜间灯光数据,实现了人为热排放在较长时间序列的空间化模拟,并分析了江西省人为热排放的时空变化特征,最后对空间化的人为热排放数据与夜间地表温度进行相关性分析,结果表明:人为热排放呈现显著的增加趋势,人为热排放的面积在不断扩张,16年间人为热排放重心不断向江西省东南方向移动;有26.27%的区域的夜间地表温度处于升温趋势;冬季的夜间地表温度增长最明显,升温区域的面积最大,增长趋势最高;人为热排放强度和夜间地表温度有着显著的正相关,在年内表现为热排放量高的区域夜间地表温度明显较高;年际变化上表现为,在热排放区域夜间地表温度的变化趋势和热排放的变化趋势主要为显著正相关。Based on the nighttime lights data of Jiangxi from 2005 to 2020 processed by the autoencoder,the spatial simulation of anthropogenic heat emissions in a long time series was realized,and the temporal and spatial variation characteristics of anthropogenic heat emissions in Jiangxi were analyzed.The correlation between anthropogenic heat emission data and nighttime land surface temperature was compared.The results show that:1)The anthropogenic heat emission in Jiangxi shows a significant increase trend,the area of anthropogenic heat emission is increasing,and the center of gravity of anthropogenic heat emission has been moving to the southeast of Jiangxi in the past 16 years.2)26.27%of the regions nighttime land surface temperature is increasing in Jiangxi,the nighttime land surface temperature increases obviously in winter,the area of warming and the growth trend of nighttime land surface temperature are the largest.3)There is a significant positive correlation between anthropogenic heat emission intensity and nighttime land surface temperature,which is manifested as significantly higher nighttime land surface temperature in areas with high heat emissions during the year.The interannual variation shows that the variation trend of nighttime land surface temperature and the variation trend of heat emission are positively correlated.

关 键 词：夜间灯光 夜间地表温度 人为热排放 时间序列 江西省 

分 类 号：P237[天文地球—摄影测量与遥感] P407[天文地球—测绘科学与技术]