Relationships between altitudinal gradient and plant carbon isotope composition of grassland communities on the Qinghai-Tibet Plateau, China

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	Relationships between altitudinal gradient and plant carbon isotope composition of grassland communities on the Qinghai-Tibet Plateau, China
	Zhong Huaping; Fan Jiangwen
	2013
关键词	Vegetation Atmospheric pressure Carbon Isotopes Precipitation (chemical) Temperature
英文摘要	Foliar and root carbon isotope composition (13C) of grassland communities on the Qinghai-Tibet Plateau, China, was obtained by the biomass weighting method and direct measurement. We investigated the characteristics and altitudinal patterns of foliar and root 13C and determined which environmental factors influenced foliar 13C most. Foliar 13C of alpine steppe was significantly higher than that of alpine meadow and temperate steppe. For alpine meadow, root 13C was significantly higher than of foliar 13C. Foliar 13C increased with altitude at an average rate of 0. 60 km-1 for the whole grassland ecosystem. This rate was lower than that at species level. However, there were no significant relationships between root 13C and altitude. Atmospheric pressure was a more important factor than temperature and precipitation in its influence on the altitudinal pattern of foliar 13C at the community level. 2012 Science China Press and Springer-Verlag Berlin Heidelberg.
出处	Science China Earth Sciences
卷	56 期:2 页:311-320
收录类别	EI
语种	英语
内容类型	EI期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/31226]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Zhong Huaping,Fan Jiangwen. Relationships between altitudinal gradient and plant carbon isotope composition of grassland communities on the Qinghai-Tibet Plateau, China. 2013.