【摘要】 探究淮河流域植被覆盖度的时空演变特征以及其驱动机制，有助于促进区域生态建设及人地关系的协调发展。基于2000—2021年淮河流域MODIS-NDVI影像数据，采用Sen+Mann-Kendall分析植被覆盖度动态变化规律。选取地形、气候、人为活动3个维度共13种驱动因子结合地理探测器模型定量分析影响植被覆盖度的驱动因子。结果表明：2000—2021年淮河流域植被覆盖呈增长趋势，2000—2010年增长较快，2011—2021年增长缓慢；植被覆盖度呈改善趋势，植被改善区域集中在研究区西部和南部，退化区域集中在研究区东部、中部及北部；人类活动与气象因素是影响植被生长的关键。更多还原

【Abstract】 Exploring the spatiotemporal evolution characteristics of vegetation coverage in the Huaihe River Basin and the impact of driving factors on vegetation coverage changes is of great significance for promoting regional ecological construction and coordinated development of human land relations.Based on MODIS-NDVI image data in the Huaihe River Basin from 2000 to 2021,the temporal and spatial evolution characteristics of vegetation coverage in the Huaihe River Basin were explored and the Sen+Mann-Kendall method was used to analyze the dynamic change law of vegetation cover.Combined with the geographical exploration model, a total of 13 driving factors in three dimensions of topography, climate and human activities were selected and the driving factors affecting vegetation cover were quantitatively analyzed by combining the geographic detector model.The results showed that: The vegetation coverage value in the Huaihe River Basin showed an increasing trend from 2000 to 2021,the growth was rapid from 2000 to 2010,and the growth was slow from 2011 to 2021;The vegetation coverage showed an clear improvement trend, and the vegetation improvement areas were concentrated in the west and south of the study area, and the degraded areas were concentrated in the eastern, central and northern parts of the study area; Human activities and meteorological factors were the key to affecting vegetation coverage.更多还原