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Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas
Ale, R (Ale, Rita)1,2; Zhang, L (Zhang, Lin)1,5; Li, X (Li, Xiang)1,2; Raskoti, BB (Raskoti, Bhakta Bahadur)3; Pugnaire, FI (Pugnaire, Francisco, I)4; Luo, TX (Luo, Tianxiang)1,5
Source PublicationECOLOGICAL INDICATORS
2018-11-01
Volume94Issue:0Pages:266-273
DOI10.1016/j.ecolind.2018.07.002
Abstract

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

Subject Area生态学
WOS IDWOS:000452692500027
Language英语
Indexed BySCIE
KeywordCarbon-isotope Discrimination Metrosideros-polymorpha Altitudinal Trends Rainfall Gradient Soil-moisture Precipitation Productivity Responses Nitrogen Ndvi
WOS Research AreaBiodiversity & Conservation ; Environmental Sciences & Ecolog
WOS SubjectBiodiversity Conservation ; Environmental Sciences
Cooperation Status国际
ISSN1470-160X
Department高寒生态重点实验室
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:4[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.itpcas.ac.cn/handle/131C11/8509
Collection图书馆
Corresponding AuthorLuo, TX (Luo, Tianxiang)
Affiliation1.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.
Recommended Citation
GB/T 7714
Ale, R ,Zhang, L ,Li, X ,et al. Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas[J]. ECOLOGICAL INDICATORS,2018,94(0):266-273.
APA Ale, R ,Zhang, L ,Li, X ,Raskoti, BB ,Pugnaire, FI ,&Luo, TX .(2018).Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas.ECOLOGICAL INDICATORS,94(0),266-273.
MLA Ale, R ,et al."Leaf delta C-13 as an indicator of water availability along elevation gradients in the dry Himalayas".ECOLOGICAL INDICATORS 94.0(2018):266-273.
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