【摘要】 监测地表植被动态变化并分析其驱动机制对于制定有效的区域生态管理策略具有重要意义。因此，文中基于MODIS NDVI数据，采用趋势分析、残差分析和偏相关分析方法，揭示了2000—2023年间科尔沁沙地植被NDVI的时空变化及其对气候变化和人类活动的响应特征。结果表明：1)2000—2023年间，科尔沁沙地生长季植被NDVI以0.054·（10a）^-1的速率波动上升，约66.48%的区域显著改善，主要分布在奈曼旗、开鲁县、敖汉旗、科尔沁左翼中旗等地。2)在研究时段内气候变化对植被动态的贡献更大，气候变化的贡献率为60.91%,人类活动的贡献率为39.09%。3)研究区北部和东部对于气候变化的响应特征更强，其中降水是影响植被生长的关键气候因素。4)约77.33%的区域人类活动对植被NDVI变化表现出促进作用，但在22.67%的区域内表现出抑制作用，抑制作用在林地和草地中的占比较高。文中结果有助于深入了解气候变化与人类活动影响下科尔沁沙地植被NDVI的时空变化特征，为该地区制定适应性的生态管理策略提供科学的参考信息。更多还原

【Abstract】 Monitoring vegetation dynamics and analyzing driving mechanisms are essential for formulating effective regional ecological management strategies. Therefore, based on MODIS NDVI data, this study employs trend analysis, residual analysis, and partial correlation analysis to investigate the spatiotemporal variations of vegetation NDVI in the Horqin Sandy Land from 2000 to 2023 and its response characteristics to climate change and human activities. The results reveal that: 1)During 2000-2023, the growing-season vegetation NDVI exhibited a fluctuating upward trend at a rate of 0.054·（10a）^-1, with approximately 66.48% of the area showing significant improvement, particularly in Naiman Banner, Kailu County, Aohan Banner, and Horqin Left Middle Banner. 2)Climate change contributed more significantly to vegetation dynamics during the study period, with a contribution rate of 60.91%, while human activities accounted for 39.09%. 3)Vegetations in northern and eastern parts of the region exhibited stronger responses to climate change, with precipitation being the key climatic factor influencing vegetation growth. 4)Human activities promoted NDVI changes in 77.33% of the area but had an inhibitory effect in 22.67% of the area, particularly with higher inhibition ratios observed in forest and grassland areas. The findings of this study contribute to a deeper understanding of the spatiotemporal changes in vegetation NDVI in the Horqin Sandy Land under climate change and human activities, providing scientific reference information for formulating adaptive ecological management strategies in the region.更多还原