2000-2022年吉林省生态质量时空变化及驱动力研究OA

Based on MOD09A1,MOD11A2,and MOD13A1 products from 2000 to 2022,this research calculated the remote sensing ecological index(RSEI)of Jilin Province.Combining ecological functional zoning,trend analysis,and the Mann-Kendall test,the spatiotemporal variations in ecological quality was examined.Partial derivatives were used to quantify the impact of climate change and human activities on RSEI,revealing the driving forces behind ecological quality changes in Jilin Province.The results indicate that the annual average RSEI of Jilin Province from 2000 to 2022 was 0.562,exhibiting a slowly fluctuating upward trend.Among the ecological zones,the grassland and wetland areas in the west exhibited the fastest increase in RSEI,while the eastern coniferous and broad-leaved mixed forest ecological zone increased most slowly.The contributions of human activities and climate change to RSEI changes in Jilin Province were roughly equivalent,with human activities contributing positively and climate change contributing negatively.Precipitation and solar radiation had stronger impacts on RSEI than temperature,which played a relatively minor role.In the western grassland wetland and central farmland ecological zones,the positive contribution of climate factors to RSEI exceeded that of human activities;precipitation was the dominant factor in the western grassland wetland zone,whereas solar radiation dominated in the central farmland zone.In the eastern coniferous and broad-leaved mixed forest ecological zone,the positive contribution of climate factors to RSEI was smaller than that of human activities,indicating that ecological engineering construction was the main driver of RSEI.