中文摘要：

为了研究新疆不同类型植被对气候变化的响应,以地带性划分的植被类型作为研究对象,1998-2012年为时间尺度,利用GIS的空间分析方法结合数学统计方法,分析了新疆各地带植被覆盖变化的时空分布特征;并采用＂多元回归＋残差插值＂的方法,模拟了气温和降水量的空间分布;利用SPOT VGT/NDVI数据以及气候数据（气温和降水量数据）,分析了5个不同地带植被的动态变化、年际变化和生长季内各月变化及其对气候变化的响应。结果表明：（1）新疆各地带植被覆盖度存在着显著差异,其中,温带北部草原地带高植被区和浓密植被区的范围较广,植被覆盖度较高,而高寒荒漠地带的极低植被区占该地带面积的一半以上,且植被覆盖度最低。（2）新疆各地带植被覆盖在近15 a间呈波动增加的趋势,5个地带的植被覆盖均有所改善,其中,高寒荒漠地带和暖温带半灌木、灌木地带的植被覆盖改善较为明显,其余3个地带均有少部分地区出现轻微改善现象。（3）温带半灌木、矮乔木荒漠地带,暖温带半灌木、灌木荒漠地带和温带半灌木、灌木荒漠地带4-10月的平均气温呈上升趋势,而温带北部草原地带、高寒荒漠地带对应的平均气温则出现下降趋势。5个地带的降水量在该时段内均表现为下降趋势。（4）基于年际尺度,新疆各地带植被NDVI与气温、降水量的相关性均不显著;基于月尺度,各地带植被NDVI受降水量的影响比气温大。同时,仅有暖温带半灌木、灌木荒漠地带植被NDVI与气温存在1个月的滞后性,其余4个地带对气温和降水均不存在滞后性。

英文摘要：

In previous studies on dynamic change of vegetation cover and relations between vegetation index and climate factors,vegetation cover type rarely was considered. In this paper,Xinjiang vegetation regionalization map was used for temporal and spatial variation of vegetation cover and its relationship with climate change.According to different regional vegetation types,Xinjiang is divided into five zones based on Chinese vegetation regionalization map. Moreover,by using mean algorithm,difference method,regression,and correlation method,regional vegetation cover change in Xinjiang from 1982 to 2012 was analyzed. Spatial distribution of air temperature and precipitation was simulated through the regression analysis method combined with spatial interpolation that latitude,longitude,and elevation are considered. According to five vegetation zones,using SPOT VGT/NDVI data and climate data,the paper analyzed dynamic,interannual,and monthly vegetation cover change in growing season and its response to climate change. The results show as follows：（1）There are significant differences in vegetation coverage in different vegetation zones of Xinjiang. The distribution of a wide range of vegetation coverage is in northern temperate grassland zone. The vegetation coverage is also higher. However,the area in very low vegetation zone account for more than half in alpine desert zone,and the vegetation coverage is lowest.（2）Vegetation cover in each zone in Xinjiang has a fluctuating increase in recent 15 years. This trend is obvious in Alpine desert,warm temperate semi shrub and fruticous desert. The other three zones have slight improvement in vegetation coverage.（3）The air temperature between April and October appears rising trend in temperate subshrub dwarf tree desert zone,warm temperate semi shrub and fruticous desert,temperate subshrub desert shrubs.But it appears to decline in northern temperate grassland zone and alpine desert. Precipitation in five vegetation zones decrease during the period of study.（4）Cor