2000—2022年吉林省生态质量时空变化及其驱动力研究

Research on the spatial and temporal changes of ecological quality and its driving forces in Jilin Province from 2000 to 2022

摘要:

本研究基于2000—2022年的MOD09A1、MOD11A2和MOD13A1产品，计算了吉林省的遥感生态指数（RSEI），并结合生态功能分区，运用趋势分析、Mann-Kendall显著性分析等方法研究了其生态质量的时空变化特征；同时，利用偏导数量化气候变化和人类活动对RSEI的影响，探讨了影响吉林省RSEI变化的驱动因素。结果表明：2000—2022年吉林省RSEI多年均值为0.562，总体呈波动缓慢上升趋势，其中西部草地湿地生态区增速最快，而东部针阔叶混交林生态区增速最慢。人类活动和气候变化对吉林省RSEI变化的贡献量大致相当，人类活动呈正向贡献，气候变化呈负向贡献，且降水和太阳辐射对RSEI变化的影响相对较大，气温的影响相对较小。不同生态区来看，气候因子对西部草地湿地生态区和中部农田生态区RSEI的正向贡献大于人类活动，其中降水是影响西部草地湿地生态区RSEI变化的主要因子，而太阳辐射是影响中部农田生态区RSEI变化的主要因子。气候因子对东部针阔叶混交林生态区RSEI的正向贡献小于人类活动，说明生态工程建设是促进RSEI提高的主要因素。

Abstract:

This research calculated the remote sensing ecological index (RSEI) of Jilin Province based on MOD09A1, MOD11A2, and MOD13A1 products from 2000 to 2022, combined with ecological functional zoning, trend analysis, Mann Kendall significance analysis, and other methods were used to research the spatial and temporal changes in ecological quality; At the same time, partial derivatives were used to quantify the impact of climate change and human activities on RSEI, and the driving factors affecting RSEI changes in Jilin Province were explored. The results indicate that: The average annual RSEI of Jilin Province from 2000 to 2022 is 0.562, the overall trend is slowly fluctuating upward trend,among which the western grassland wetland ecological zone has the fastest growth rate, while the eastern coniferous and broad-leaved mixed forest ecological zone has the slowest growth rate. The contributions of human activities and climate change to the RSEI changes in Jilin Province are roughly equivalent, with human activities contributing positively and climate change contributing negatively.From the perspective of different ecological zones, the positive contribution of climate factors to RSEI in the western grassland wetland ecological zone and the central farmland ecological zone is greater than that of human activities, precipitation is the main factor affecting the change of RSEI in the western grassland wetland ecological zone, while solar radiation is the main factor affecting the change of RSEI in the central farmland ecological zone.The positive contribution of climate factors to RSEI in the eastern coniferous and broad-leaved mixed forest ecological zone is less than that of human activities, indicating that ecological engineering construction is the main factor to promote the improvement of RSEI.