文献类型：期刊文献

中文题名：内蒙古地区近25年植被对气温和降水变化的影响

英文题名：Effect of vegetation on changes of temperature and precipitation in Inner Mongolia,China

作者：时忠杰[1] 高吉喜[2] 徐丽宏[3] 冯朝阳[4] 吕世海[4] 尚建勋[5]

第一作者：时忠杰

机构：[1]中国林业科学研究院荒漠化研究所,北京100091;[2]环境保护部南京环境科学研究所,江苏南京210042;[3]中国林业科学研究院森林生态环境与保护研究所,北京100091;[4]国家环境保护部区域生态过程与功能评估重点实验室／／中国环境科学研究院．北京100012;[5]中国人民大学环境学院,北京100872

年份：2011

卷号：20

期号：11

起止页码：1594-1601

中文期刊名：生态环境学报

外文期刊名：Ecology and Environmental Sciences

收录：CSTPCD;;北大核心:【北大核心2008】；CSCD:【CSCD2011_2012】；

基金：国家自然科学基金项目(40801017;30700640);林业行业公益性科研专项(201004010);环境保护公益性行业科研专项(200909021);中国环境科学研究院中央级公益性科研院所基本科研业务专项(2009KYYW07)

语种：中文

中文关键词：气温;降水;气候变化;植被;内蒙古

外文关键词：temperature; precipitation; climate changes; vegetation; Inner Mongolia Autonomous Region

分类号：Q948;P467

摘要：利用1982—2006年内蒙古地区GIMMS-NDVI和降水量、气温数据,分析了不同植被类型对气温和降水变化趋势的影响。结果表明:近25年来内蒙古地区气温整体上呈上升趋势,降水量呈微弱降低趋势,西部荒漠区呈暖湿化趋势,中东部草原、森林等植被类型区呈暖干化趋势;从不同植被类型NDVI与平均气温和降水量的变化趋势率相关分析表明,NDVI值越低,升温趋势越明显,其中春季和秋季各植被类型间NDVI与季均气温升高趋势率呈显著和较显著的相关,夏、冬季关系不明显;植被NDVI越高,降水量减少趋势越明显。基于栅格的NDVI与气温升高幅度、降水变化趋势相关分析表明,年均气温升高幅度基本随NDVI的增加而降低,其中春、夏和秋季的季均气温升高幅度均随NDVI的增加而显著降低,冬季趋势不明显;而年降水量减小趋势率随植被NDVI的增加而显著增加,其中春季和冬季NDVI变化对降水的变化几乎没有影响;夏季和秋季均表现为随NDVI的增加,降水减小趋势率呈增加趋势。
Using the GIMMS NDVI data,monthly precipitation and mean temperature from 1982 to 2006 in Inner Mongolia Autonomous Region,the effects of the different vegetation types on change trend of temperature and precipitation are analyzed.The results indicate that there is an increasing trend in temperature and decreasing weakly in precipitation in the whole Inner Mongolia Autonomous Region.And there is a warm-wet trend in the western desert zone and warm-drought trend in the east-central grassland and forest zones.By analyzing the relationship of NDVI of different vegetation types and the change trend rates of precipitation and temperature from 1982 to 2006,the results show that the lower NDVI values lead to the more warming trend of temperature.Among different seasons,there is a significant correlation at the 0.05 and 0.1 level in spring and autumn between vegetation types NDVI values and seasonal mean temperature,while is not in summer and winter.And we also found that the higher NDVI values may cause the more decreasing trend of annual precipitation.Based on the relationship analysis of the grid NDVI and change trend rates of temperature and precipitation,it is found that the mean temperature increasing range reduces with increase of NDVI values,espe-cially in spring,summer and autumn.And the annual precipitation decreasing trend rate increases significantly with increase of NDVI,especially in summer and autumn,but is not related to NDVI in spring and winter.