Analysis of Characteristics and Influencing Factors of Land Surface Temperature Change in Yunnan Province

Abstract

AbstractAs an important environmental element, land surface temperature (LST) can be used as a reference for climate change, and it also has an important impact on agricultural production. It is significant to study LST changes for understanding climate change and guiding agricultural production. The data in this article uses the high-quality 2003–2017 MODIS LST data reconstructed by Zhao Bing’s team as the data source. Based on the climate tendency rate and geodetector, the characteristics and influencing factors of LST changes in Yunnan Province are analyzed. We finally got three results: (1) From the overall distribution of LST, the in Yunnan Province gradually increases from north to south. (2) The minimum LST varies greatly in each season, and the maximum LST varies less. Generally speaking, the LST of Yunnan Province is showing an upward trend. (3) The factor detector of the geodetector revealed that air temperature (q = 0.731), elevation (q = 0.657), and precipitation (q = 0.458) are the main factors affecting the LST of Yunnan Province. The interactive detector further revealed that temperature and precipitation (q = 0.762), temperature, and DEM (q = 0.745) jointly drive the characteristic pattern of LST in Yunnan Province. This study can provide a certain reference for related research, and it can also provide a certain reference for the agricultural planning of Yunnan Province.KeywordsLand surface tempreatureYunnan ProvinceChange characteristicsGeodetectorsInfluencing factors