摘要
Abstract
To understand the current status of vegetation ecology,analyze the influencing factors of vegetation changes,and provide a scientific basis for regional ecological environment management and planning,this study investigated the spatial-temporal variation characteristics and driving forces of Normalized Difference Vegetation Index(NDVI)in the Mu Us Sandy Land using MODIS data and meteorological data,employing methods such as Theil-Sen trend analysis,Mann-Kendall trend test,and Hurst exponent.The results showed that the overall annual average NDVI in the Mu Us Sandy Land exhibited a fluctuating upward trend with a growth rate of 0.007/a.The spatial distribu-tion displayed a gradual increase from northwest to southeast.In the future,the NDVI in the Mu Us Sandy Land is predicted to mainly exhibit an inverse trend,accounting for 71.66％of the area.Both NDVI and precipitation and average temperature exhibited positive correlations.The vegetation in the Mu Us Sandy Land tends to improve,yet there is a potential for future degradation.Precipitation is i-dentified as the dominant factor influencing vegetation growth in the Mu Us Sandy Land.关键词
毛乌素沙地/植被NDVI/时空变化/气象因素Key words
Mu Us sandy land/vegetation NDVI/temporal and spatial variations/meteorological factors分类
农业科技
