Background. Jixi is a typical mining city in China that has undergone dramatic changes in its land-use pattern of mining areas over the development of its coal resources. Impacts of coal mining activities have greatly affected the regional land surface temperature and ecological system. Methods. The Landsat 8 Operational Land Imager (OLI) data from 2015 and 2019 were used from the Jiguan, Didao, and Chengzihe District of Jixi in Heilongjiang, China as the study area. The calculations to

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... e the land-use classification, vegetation coverage, and land surface temperature (LST) were performed using ArcGIS10.5 and ENVI 5.3 software packages. A correlation analysis revealed the impact of land-use type, vegetation coverage, and coal mining activities on LSTs. Results. The results show significant spatial differentiation in the LSTs of Jixi City. The LSTs for various land-use types were ranked from high to low as follows: mining land > construction land > grassland > cultivated land > forest land > water area. The LST was lower in areas with high vegetation coverage than in other areas. For every 0.1 increase in vegetation coverage, the LST is expected to drop by approximately 0.75 ℃. An analysis of mining land patches indicates that the patch area of mining lands has a significant positive correlation with both the average and maximum patch temperatures. The average patch temperature shows a logarithmic increase with the growth of the patch area, and within 200,000 m 2 , the average patch temperature increases significantly. The maximum patch temperature shows a linear increase with the patch area growth, and for every 100,000 m 2 increase in the patch area of mining lands, the maximum patch temperature increases by approximately 0.81 ℃. The higher the average patch temperature of mining land, the higher the temperature in its buffer zone, and the greater its influence scope. This study provides a useful reference for exploring the warming effects caused by coal mining activities and the definition of its influence scope. Abstract 17 Background. Jixi is a typical mining city in China that has undergone dramatic changes in its 18 land-use pattern of mining areas over the development of its coal resources. Impacts of coal 19 mining activities have greatly affected the regional land surface temperature and ecological 20 system. 21 Methods. The Landsat 8 Operational Land Imager (OLI) data from 2015 and 2019 were used 22 from the Jiguan, Didao, and Chengzihe District of Jixi in Heilongjiang, China as the study area. 23 The calculations to determine the land-use classification, vegetation coverage, and land surface 24 temperature (LST) were performed using ArcGIS 10.5 and ENVI 5.3 software packages. A 25 correlation analysis revealed the impact of land-use type, vegetation coverage, and coal mining 26 activities on LSTs. 27 Results. The results show significant spatial differentiation in the LSTs of Jixi City. The LSTs 28 for various land-use types were ranked from high to low as follows: mining land > construction 29 land > grassland > cultivated land > forest land > water area. The LST was lower in areas with 30 high vegetation coverage than in other areas. For every 0.1 increase in vegetation coverage, the 31 LST is expected to drop by approximately 0.75 ℃. An analysis of mining land patches indicates 32 that the patch area of mining lands has a significant positive correlation with both the average 33 and maximum patch temperatures. The average patch temperature shows a logarithmic increase 34 with the growth of the patch area, and within 200,000 m 2 , the average patch temperature 35 increases significantly. The maximum patch temperature shows a linear increase with the patch 36 area growth, and for every 100,000 m 2 increase in the patch area of mining lands, the maximum 37 patch temperature increases by approximately 0.81 ℃. The higher the average patch temperature 38 of mining land, the higher the temperature in its buffer zone, and the greater its influence scope.