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	Are plants more responsive to decreased than to increased rainfall on the tibetan plateau? evidence from carex duriuscula subsp stenophylloides
	He, Zheng-Sheng; He, Wei-Ming; Xu, Ling-Ling; Shi, Pei-Li; Zhang, Xian-Zhou; He, Yong-Tao; Zhong, Zhi-Ming; Dong, Ming
刊名	Annales botanici fennici
	2006-11-30
卷号	43期号:6页码:401-408
关键词	Biomass production Carex duriuscula subsp stenophylloides Grassland Ecosystems Photosynthesis Rainfall change
ISSN号	0003-3847
通讯作者	Dong, ming(dongming@ibcas.ac.cn)
英文摘要	Carex duriuscula subsp. stenophylloides is a sedge species in alpine grassland ecosystems on the tibetan plateau. here we examine its physiological and growth responses to variation in simulated rainfall in a growing season. compared with the present local rainfall, increased rainfall had no effect on any measured trait except for long-term water use efficiency, and decreased rainfall significantly reduced total leaf area and biomass production, while only severe limitation of rainfall decreased net photosynthetic rate, stomatal conductance, transpiration rate, and apparent carboxylation efficiency. net photosynthetic rate was significantly correlated with stomatal conductance, transpiration rate, apparent carboxylation efficiency, and leaf water potential. total plant dry weight was significantly correlated with net photosynthetic rate, total leaf area, and leaf area ratio. these findings suggest that stomatal limitation and degraded activity of mesophyll cells result in a decrease in net photosynthesis, and that decreased net photosynthesis and total leaf area lead to a decrease in plant production. based on our measurements, sedge-dominated ecosystems of the tibetan plateau are more likely to be impacted by decreases in growing season rainfall than by increases.
WOS关键词	CARBON ISOTOPE DISCRIMINATION ; GAS-EXCHANGE ; WATER DEFICITS ; DROUGHT ; STRESS ; LEAVES
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
语种	英语
出版者	FINNISH ZOOLOGICAL BOTANICAL PUBLISHING BOARD
WOS记录号	WOS:000243203800001
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2378700
专题	中国科学院大学
通讯作者	Dong, Ming
作者单位	1.Chinese Acad Sci, Inst Bot, Lab Quantitat Vegetat Ecol, Beijing 100093, Peoples R China 2.Jiujiang Univ, Coll Life Sci, Jiujiang 332000, Peoples R China 3.Grad Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	He, Zheng-Sheng,He, Wei-Ming,Xu, Ling-Ling,et al. Are plants more responsive to decreased than to increased rainfall on the tibetan plateau? evidence from carex duriuscula subsp stenophylloides[J]. Annales botanici fennici,2006,43(6):401-408.
APA	He, Zheng-Sheng.,He, Wei-Ming.,Xu, Ling-Ling.,Shi, Pei-Li.,Zhang, Xian-Zhou.,...&Dong, Ming.(2006).Are plants more responsive to decreased than to increased rainfall on the tibetan plateau? evidence from carex duriuscula subsp stenophylloides.Annales botanici fennici,43(6),401-408.
MLA	He, Zheng-Sheng,et al."Are plants more responsive to decreased than to increased rainfall on the tibetan plateau? evidence from carex duriuscula subsp stenophylloides".Annales botanici fennici 43.6(2006):401-408.

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