关键词: 神东矿区　, 地表温度　, 突变检测　, 季节分解

Abstract: In recent years,resource development and land use changes have significantly changed the surface structure and thermal environment of coal mining areas.Land surface temperature (LST),as an important parameter to characterize sur face energy balance and ecological environment change,has become an important index for ecological monitoring and restora tion evaluation in mining areas.Taking Shendong coal mine area as the research object,based on the LST inversion of Landsat 8 remote sensing image from 2014 to 2024,combined with BFAST algorithm,the temporal and spatial evolution characteristics and mutation process of surface temperature were analyzed.The results showed that the LST of the mining area showed a signif icant upward trend during the study period,and the area of the heating area was significantly larger than that of the cooling are a.The LST mutation events are mainly concentrated in 2019-2021,showing a transition from relatively stable to rapid warming. The LST time series has both stable periodic fluctuation and periodic warming characteristics.The change of LST is closely re lated to the change of land use.The expansion of construction land and sandy land,as well as the reduction of grassland,culti vated land and water area,weaken the transpiration cooling effect of vegetation and the thermal buffer function of water body, which are the main factors driving the surface temperature rise.In general,the land use evolution model of " increasing bareness,reducing greenness and reducing water body" in Shendong mining area is highly consistent with the deterioration of ther mal environment.Land use change is the core driving force of thermal environment evolution in mining area.

Key words: Shendong mining area,land surface temperature,change-point detection,seasonal decomposition