气候变化领域集成服务门户(CCPortal): Carbon isotope composition of plants along altitudinal gradient and its relationship to environmental factors on the Qinghai-Tibet Plateau

CCPortal

	Carbon isotope composition of plants along altitudinal gradient and its relationship to environmental factors on the Qinghai-Tibet Plateau
	Li, Mingcai; Liu, Hongyan; Li, Laixing; Yi, Xianfeng; Zhu, Xiaojia
发表日期	2007
ISSN	1505-2249
起始页码	67
结束页码	78
卷号	55 期号:1 页码:3-10
英文摘要	Distribution pattern of delta C-13 values of plateau plants and their responses to environment along attitudinal gradients were investigated. In the growing season of 2003 (June-August), stable carbon isotope ratios (delta C-13) of 174 plant samples belonging to 89 species of 20 families and 58 genera along the gradient 28004400 m (above sea level) was studied in six sites on the east edge of Qinghai-Tibet Plateau. The results indicated that the range of delta C-13 values of plants is narrow from -30.2 parts per thousand to -25.2 parts per thousand, which means that none of the species examined belonged to C-4 photosynthetic pathway and all of these species performed C-3 photosynthetic pathway. The average delta C-13 values of plants at 6 sites were positively correlated to altitude (r = 0.974, P < 0.01). The results revealed that site-averaged delta C-13 values were negatively correlated with temperature (r = 0.907, P < 0.05) as well as CO2 partial pressure (r = 0.940, P < 0.01). The combination of these two factors account for 80% of the variation of delta C-13 values (r(2) = 0.859, P < 0.01). Varying precipitation with increasing altitude does not affect the plant delta C-13 values (r = 0.469, P > 0.05) as well as the sunlight duration (r = 0.630, P > 0.05).
关键词	C-13/C-12 RATIOS DIOXIDE DISCRIMINATION PHOTOSYNTHESIS DELTA-C-13 AVAILABILITY CELLULOSE FINLAND SIGNAL
英文关键词	delta C-13 value; plateau plants; environmental factors; Qinghai-Tibet Plateau
语种	英语
WOS研究方向	Environmental Sciences & Ecology
WOS类目	Ecology
WOS记录号	WOS:000244977800007
来源期刊	POLISH JOURNAL OF ECOLOGY
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/55726
推荐引用方式 GB/T 7714	Li, Mingcai,Liu, Hongyan,Li, Laixing,et al. Carbon isotope composition of plants along altitudinal gradient and its relationship to environmental factors on the Qinghai-Tibet Plateau[J]. 中国科学院青藏高原研究所,2007,55(1):3-10.
APA	Li, Mingcai,Liu, Hongyan,Li, Laixing,Yi, Xianfeng,&Zhu, Xiaojia.(2007).Carbon isotope composition of plants along altitudinal gradient and its relationship to environmental factors on the Qinghai-Tibet Plateau.POLISH JOURNAL OF ECOLOGY,55(1),3-10.
MLA	Li, Mingcai,et al."Carbon isotope composition of plants along altitudinal gradient and its relationship to environmental factors on the Qinghai-Tibet Plateau".POLISH JOURNAL OF ECOLOGY 55.1(2007):3-10.