Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas

doi:10.1016/j.ecolind.2018.07.002

	Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas
	Ale, Rita 1; Zhang, Lin 4; Li, Xiang 1; Raskoti, Bhakta Bahadur 2; Pugnaire, Francisco, I 3; Luo, Tianxiang 4
	2018
发表期刊	ECOLOGICAL INDICATORS
ISSN	1470-160X
卷号	94 页码:266-273
摘要	Understanding the variation of water availability along elevation gradients is essential for predicting the response of mountain ecosystems to global warming. However, it is challenging to precisely quantify water availability in dry mountains, especially in remote areas where climate records are limited. In dry habitats, leaf delta C-13 is highly sensitive to water availability. Here, we demonstrated how leaf delta C-13 of a widespread species could be used as an indicator of water availability in dry mountainous regions. We measured leaf delta C-13 and nitrogen content in one dominant forb and two cushion species along two elevational transects in the central Himalayas, Nepal. The Thornthwaite climatic moisture index was determined for each elevation site based on the 1-km(2) WorldClim data of monthly mean temperature and precipitation. We found that the elevational variation of delta C-13 in each of the three species was associated with precipitation, in which growing-season moisture index and annual precipitation were negatively correlated with delta C-13, regardless of elevation and temperature. Elevation and leaf nitrogen showed no significant relationship with leaf delta C-13. Thus, within-species leaf delta C-13 promises to be a simple and reliable indicator of environmental severity along elevation gradients, which can be easily quantified in remote high-mountain environments. Leaf delta C-13 would be a useful predictor of the change in water availability induced by warming in dry mountainous regions like the Himalayas
关键词	Alpine ecosystem Carbon isotope Dry mountains Moisture index Precipitation
学科领域	Biodiversity Conservation ; Environmental Sciences
DOI	10.1016/j.ecolind.2018.07.002
收录类别	SCI
语种	英语
WOS关键词	CARBON-ISOTOPE DISCRIMINATION ; METROSIDEROS-POLYMORPHA ; ALTITUDINAL TRENDS ; RAINFALL GRADIENT ; SOIL-MOISTURE ; PRECIPITATION ; PRODUCTIVITY ; RESPONSES ; NITROGEN ; NDVI
WOS记录号	WOS:000452692500027
出版者	ELSEVIER
文献子类	Article
出版地	AMSTERDAM
EISSN	1872-7034
资助机构	National Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [41571046, 31170451] ; Strategic Priority Research Program (B) of the Chinese Academy of SciencesChinese Academy of Sciences [XDB03030402] ; CAS-TWAS Fellowship ; Youth Innovation Promotion Association CAS [2014060] ; 2nd Scientific Expedition to the Qinghai-Tibet Plateau
作者邮箱	luotx@itpcas.ac.cu
引用统计	被引频次：19[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.ibcas.ac.cn/handle/2S10CLM1/20591
专题	系统与进化植物学国家重点实验室
作者单位	1.Chinese Acad Sci, Key Lab Alpine Ecol & Biodivers, Inst Tibetan Plateau Res, Bldg 3,16 Lin Cui Rd, Beijing 100101, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Chinese Acad Sci, Inst Bot, State Key Lab Systemat & Evolutionary Bot, Beijing 100093, Peoples R China 4.CSIC, Estn Expt Zonas Aridas, Almeria, Spain 5.CAS Ctr Excellence Tibetan Plateau Earth Sci, Beijing 100101, Peoples R China
推荐引用方式 GB/T 7714	Ale, Rita,Zhang, Lin,Li, Xiang,et al. Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas[J]. ECOLOGICAL INDICATORS,2018,94:266-273.
APA	Ale, Rita,Zhang, Lin,Li, Xiang,Raskoti, Bhakta Bahadur,Pugnaire, Francisco, I,&Luo, Tianxiang.(2018).Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas.ECOLOGICAL INDICATORS,94,266-273.
MLA	Ale, Rita,et al."Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas".ECOLOGICAL INDICATORS 94(2018):266-273.

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