magnitudeandformingfactorsofmasselevationeffectonqinghaitibetplateau

	magnitudeandformingfactorsofmasselevationeffectonqinghaitibetplateau
	Zhang Shuo; Zhang Baiping; Yao Yonghui; Zhao Fang; Qi Wenwen; He Wenhui; Wang Jing
刊名	chinesegeographicalscience
	2016
卷号	26 期号:6 页码:745
ISSN号	1002-0063
英文摘要	Mass elevation effect (MEE) refers to the thermal effect of huge mountains or plateaus, which causes the tendency for temperature-related montane landscape limits to occur at higher elevations in the inner massifs than on their outer margins. MEE has been widely identified in all large mountains, but how it could be measured and what its main forming-factors are still remain open. This paper, supposing that the local mountain base elevation (MBE) is the main factor of MEE, takes the Qinghai-Tibet Plateau (QTP) as the study area, defines MEE as the temperature difference (?T) between the inner and outer parts of mountain massifs, identifies the main forming factors, and analyzes their contributions to MEE. A total of 73 mountain bases were identified, ranging from 708 m to 5081 m and increasing from the edges to the central parts of the plateau. Climate data (1981-2010) from 134 meteorological stations were used to acquire AT by comparing near-surface air temperature on the main plateau with the free-air temperature at the same altitude and similar latitude outside of the plateau. The AT for the warmest month is averagely 6.15°C, over 12°C at Lhatse and Baxoi. A multivariate linear regression model was developed to simulate MEE based on three variables (latitude, annual mean precipitation and MBE), which are all significantly correlated to AT. The model could explain 67.3% of MEE variation, and the contribution rates of three independent variables to MEE are 35.29%, 22.69% and 42.02%, respectively. This confirms that MBE is the main factor of MEE. The intensive MEE of the QTP pushes the 10°C isotherm of the warmest month mean temperature 1300-2000 m higher in the main plateau than in the outer regions, leading the occurrence of the highest timberline (4900 m) and the highest snowline (6200 m) of the Northern Hemisphere in the southeast and southwest of the plateau, respectively.
语种	英语
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/97327]
专题	中国科学院地理科学与资源研究所
作者单位	中国科学院地理科学与资源研究所
推荐引用方式 GB/T 7714	Zhang Shuo,Zhang Baiping,Yao Yonghui,et al. magnitudeandformingfactorsofmasselevationeffectonqinghaitibetplateau[J]. chinesegeographicalscience,2016,26(6):745.
APA	Zhang Shuo.,Zhang Baiping.,Yao Yonghui.,Zhao Fang.,Qi Wenwen.,...&Wang Jing.(2016).magnitudeandformingfactorsofmasselevationeffectonqinghaitibetplateau.chinesegeographicalscience,26(6),745.
MLA	Zhang Shuo,et al."magnitudeandformingfactorsofmasselevationeffectonqinghaitibetplateau".chinesegeographicalscience 26.6(2016):745.