干旱区生态环境知识资源中心(Arid): Interdecadal fluctuation of dry and wet climate boundaries in China in the past 50 years

Arid

	Interdecadal fluctuation of dry and wet climate boundaries in China in the past 50 years
	Yang Jianping; Ding Yongjian; Chen Rensheng; Liu Lianyou
来源期刊	Journal of Geographical Sciences
ISSN	1009-637X
出版年	2002
卷号	12 期号:2 页码:210-216
英文摘要	Based on the mean yearly precipitation and the total yearly evaporation data of 295 meteorological stations in China in 1951-1999, the aridity index is calculated in this paper. According to the aridity index, the climatic regions in China are classified into three types, namely, arid region, semi-arid region and humid region. Dry and wet climate boundaries in China fluctuate markedly and differentiate greatly in each region in the past 50 years. The fluctuation amplitudes are 20-400 km in Northeast China, 40-400 km in North China, 30-350 km in the eastern part of Northwest China and 40-370 km in Southwest China. Before the 1980s (including 1980), the climate tended to be dry in Northeast China and North China, to be wet in the eastern part of Northwest China and very wet in Southwest China. Since the 1990s there have been dry signs in Southwest China, the eastern part of Northwest China and North China. The climate becomes wetter in Northeast China. Semi-arid region is the transitional zone between humid and arid regions, the monsoon edge belt in China, and the susceptible region of environmental evolution. At the end of the 1960s dry and wet climate in China witnessed abrupt changes, changing wetness into dryness. Dry and wet climate boundaries show the fluctuation characteristics of the whole shifts and the opposite fluctuations of eastward, westward, southward and northward directions. The fluctuations of climatic boundaries and the dry and wet variations of climate have distinctive interdecadal features.
英文关键词	China the index of aridity dry and wet climate boundary fluctuation
类型	Article
语种	英语
收录类别	CSCD
WOS研究方向	Meteorology & Atmospheric Sciences
CSCD记录号	CSCD:1364177
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/334827
作者单位	Yang Jianping, Cold and Arid Regions Environmental and Engineering Research Institute,CAS, Lanzhou, Gansu 730000, China.; Ding Yongjian, Cold and Arid Regions Environmental and Engineering Research Institute,CAS, Lanzhou, Gansu 730000, China.; Chen Rensheng, Cold and Arid Regions Environmental and Engineering Research Institute,CAS, Lanzhou, Gansu 730000, China.; Liu Lianyou, Institute of Resource and Environmental Sciences, Beijing Normal University, BeiJing 100875, China.
推荐引用方式 GB/T 7714	Yang Jianping,Ding Yongjian,Chen Rensheng,et al. Interdecadal fluctuation of dry and wet climate boundaries in China in the past 50 years[J],2002,12(2):210-216.
APA	Yang Jianping,Ding Yongjian,Chen Rensheng,&Liu Lianyou.(2002).Interdecadal fluctuation of dry and wet climate boundaries in China in the past 50 years.Journal of Geographical Sciences,12(2),210-216.
MLA	Yang Jianping,et al."Interdecadal fluctuation of dry and wet climate boundaries in China in the past 50 years".Journal of Geographical Sciences 12.2(2002):210-216.