内蒙古典型草原区植被动态与植被恢复——以锡林郭勒盟典型草原区为例

Trend and Analysis of Vegetation Variationof Typical Rangeland in Inner Mongolia——A Case Study of Typical Rangeland of Xilinguole

内蒙古草原植被是一个极脆弱的生态系统,易受干旱等自然灾害影响。自1999年以来,全区大部分地区连续三年干旱和虫害(蝗灾),造成严重的草原退化和沙化。2002年后,内蒙古天然植被整体上有不同程度好转,草原生态环境有所改善。本文以锡林郭勒1999至2004年MODIS和TM影象数据和地面样点数据为依据,从宏观和微观两方面揭示了锡林郭勒草地植被动态规律和变化趋势,并系统分析了草地植被发生的变化原因、驱动因素和机理,阐明了锡林郭勒盟典型区草地所面临的问题,以期为我区草原植被恢复应采取的对策和措施提供依据。

Grassland of Inner Mongolia is a very fragile ecosystem,and is prone to drought. From 1999, Most area of Inner Mongolia were suffered from drought and pest,and caused serious degeneration and desertification. After2002,rangland of Inner Mongolia is prone to restoration. This paper , being based on data which were gathered from the ground and MODIS, TM image from 1999 to 2004,demonstrated vegetation variation guide and trend from two aspects of macrocosm and microcosm, and systematically analysed varied reasons,drive force factors and mechanism and expounded problems that xilinguole faced, countermeasures that should be taken.