干旱区生态环境知识资源中心(Arid): 呼伦贝尔草原对全球变暖的响应

Arid

	呼伦贝尔草原对全球变暖的响应
其他题名	Change of Grass Growth in the Hulun Buir Steppe in Response to Global Warming
	马玉玲; 余卫红; 方修琦
来源期刊	干旱区地理
ISSN	1000-6060
出版年	2004
卷号	27 期号:1 页码:29-34
中文摘要	近百年来,尤其近20年,全球气候显著变暖,已导致植物物候与生产力在过去20年中发生显著变化.遥感方法是研究植被对全球变暖的响应的一种非常有效的方式,利用NOAA/AVHRR数据,结合地面气象数据,研究近20年来中国东北地区呼伦贝尔草原NDVI与温度、降水变化的相互关系,认识呼伦贝尔草原对气候变化的响应特征.研究结果表明:(1)呼伦贝尔草原地区近20年温度变化明显,高于全球平均增温幅度.(2)生长季(4～10月)NDVI有较明显上升,线性拟合分析表明,所选4个区域近20年生长季NDVI平均值上升了2.2%.(3)NDVI的增加主要在1988年前后,在草原东部后一阶段(1988～1999)比前一阶段(1982～1987)NDVI平均值增加了7.8%.(4)呼伦贝尔草原对全球变暖响应显著.NDVI与气温,尤其与春季相关性显著.
英文摘要	In the IPCC Third Assessment Report, it is pointed out lhat the global average temperature has in-creased 0.6 + 0. 2V, in the twentieth century, and 1 980s and 1990s are the warmest twenty years in the past one hundred years. Global warming during the last century has influenced the environment seriously. The warming trend in the past 20 years has been making the phenology and productivity of vegetation changes remarkably. Northeast China is one of the most sensitive areas in response lo the global warming in China and the annual temperature in this area has increase more than one degree in the past twenty years. Forest, grassland and farm-land are three major types of vegetation in Northeast China. The vegetal ion in Hulun Buir Steppe, which be-longs to the semiarid land lying in the northwest of Northeast China, are the representative of the grassland in the temperate zone responding to the global warming in the past twenty years. Based on NOAA/AVHRR data, combined with the observed meteorological data of Hailar in the area, a case study on ihe response of the grass-land in the Hulun Buir Steppe of Northeast China to global warming in the past 20 years is made in this paper. The results show that: (1) The temperature in Hailar increases 0. l()V, per year, which shows that the temper-ature in the Hulun Buir Steppe has increased remarkably than that in the global during the last 18 years; (2) The four selected areas averaged NDVI in growing season (from April to October) has obviously increased by 2.2% in the past 18 years; (3) The obvious increase of NDVI happened around 1988, when the mean NDVI during 1988～1999 is 7.8% more than that during 1982～1987 in the east part of the Hulun Buir Steppe, which means that the carrying capacity of the grassland has increased. (4) Response of the Hulun Buir Steppe to the globe warming is remarkable. The NDVI and the temperature, especially the temperature in spring, have sensitive positive correlativity; (5) From April to October, because of the precipitation, the influence of the temperature to the cumulative NDVI decreases little by little from east to the west. In the Filifnliu msibiricum grassland of the east, the influence of the temperature in April is remarkable; while in the Leymus chineuss grassland ( Stipa baicalensis included) and the Stipa grewdis and S. krylovii grassland of the west, the influ-ence of the precipitation in July is remarkable.
中文关键词	东北地区 ; 全球变暖 ; 半干旱地区 ; 草原
英文关键词	NDVI Northeast China Global warming NDVI Semiarid land Grassland
类型	Article
语种	中文
收录类别	CSCD
WOS类目	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:1502401
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/378412
作者单位	马玉玲, 北京师范大学资源与环境科学系, 北京 100875, 中国.; 余卫红, 北京师范大学资源与环境科学系, 北京 100875, 中国.; 方修琦, 北京师范大学资源与环境科学系, 北京 100875, 中国.
推荐引用方式 GB/T 7714	马玉玲,余卫红,方修琦. 呼伦贝尔草原对全球变暖的响应[J],2004,27(1):29-34.
APA	马玉玲,余卫红,&方修琦.(2004).呼伦贝尔草原对全球变暖的响应.干旱区地理,27(1),29-34.
MLA	马玉玲,et al."呼伦贝尔草原对全球变暖的响应".干旱区地理 27.1(2004):29-34.