基于遥感的济宁市地表温度反演及时空特征分析

Inversion and Spatiotemporal Characteristics of Land Surface Temperature in Jining City Based on Remote Sensing

探讨了济宁市热环境的变化,以应对全球气候变暖和城市化的加快,通过GIS平台和ENVI软件,对济宁市2000—2020年Landsat遥感影像数据的地表温度进行反演,并分析其在近20a间的时空变化趋势。结果表明,济宁市的地表温度在2000—2015年间呈现出明显的上升趋势,高温区域的数量也相应增加,导致热环境的恶化。然而,2015—2020年,济宁市的地表温度出现了下降,高温区域的数量也相应减少。

This paper aims to investigate the changes of the thermal environment in Jining City,in order to cope with the global warming and the acceleration of urbanization.By using GIS platform and ENVI software,the land surface temperature data of Landsat remote sensing images in Jining City from 2000 to 2020 were retrieved,and the spatio-temporal variation trend in the past 20 years was analyzed.After the study,we found that the surface temperature of Jining City showed an obvious upward trend from 2000 to 2015,and the number of high temperature areas also increased correspondingly,leading to the deterioration of the thermal environment.However,from 2015 to 2020,the surface temperature of Jining City has decreased,and the number of high temperature areas has also decreased.