干旱区生态环境知识资源中心(Arid): Variation in desert shrub foliar pH in relation to drought and salinity in Xinjiang, China

Arid

DOI	10.1111/jvs.13031
	Variation in desert shrub foliar pH in relation to drought and salinity in Xinjiang, China
	Luo, Yan; Yan, Zhengbing; Liu, Sining; Chen, Jiashu; Li, Kaihui; Mohammat, Anwar; Han, Wenxuan
通讯作者	Han, WX (corresponding author), Chinese Acad Sci, Xinjiang Inst Ecol & Geog, 818 South Beijing Rd, Urumqi 830011, Peoples R China.
来源期刊	JOURNAL OF VEGETATION SCIENCE
ISSN	1100-9233
EISSN	1654-1103
出版年	2021
卷号	32 期号:3
英文摘要	Aim: Foliar pH, an emerging plant functional trait, plays a key role in plant eco-physiological processes. However, it remains unclear how foliar pH varies among plants with different preferences concerning soil salinity, and how it responds to drought stress in desert ecosystems. Location Xinjiang, northwestern China (40.24 degrees N to 46.24 degrees N, 80.66 degrees E to 91.33 degrees E). Methods: We addressed variation in foliar pH in four desert shrub groups (i.e., euhalophytes, secretohalophytes, pseudohalophytes and glycophytes) with differing adaptive strategies to soil salinity in 29 sites in Xinjiang, China, and explored the effects of drought and saline stress on foliar pH variability. Results: We found that average foliar pH of desert shrubs was 5.54 +/- 0.02, higher than that of shrubs from humid areas. At the functional group level, euhalophytes (5.65 +/- 0.03) and glycophytes (5.61 +/- 0.04) had significantly higher foliar pH than secretohalophytes (5.47 +/- 0.03) and pseudohalophytes (5.39 +/- 0.05). Coverage-weighted mean foliar pH of glycophytes-dominated communities was significantly higher (5.80 +/- 0.18) than those of the halophytes-dominated communities (5.34 +/- 0.07 similar to 5.49 +/- 0.07). Only in pseudohalophytes there was a significant relationship between foliar pH and both drought stress (i.e., low soil water stress coefficient, aridity index, and mean annual precipitation) and saline stress (shown by high soil electrical conductivity and soil pH). In contrast, secretohalophytes displayed opposite or non-significant relationships between foliar pH and drought and saline stress. Compared with salinity indicators, drought exerted a much larger impact on foliar pH, particularly in pseudohalophytes and secretohalophytes. Conclusions: Our work documented a comprehensive analysis of foliar pH across halophyte and glycophyte shrub species, and found contrasting responses of foliar pH to drought and salinity in desert ecosystems, which can provide an alternative perspective for understanding the survival strategies of desert plants, and may also offer new insights into the population dynamics of desert shrub communities under global climate change.
英文关键词	desert ecosystems desert shrub communities halophytes plant functional traits salinity stress water stress
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000666878600021
WOS关键词	APOPLASTIC PH ; INTRACELLULAR PH ; PLANT TRAIT ; LEAVES ; VARIABILITY ; SOIL ; BIOGEOGRAPHY ; TOLERANCE ; HANDBOOK ; STRESS
WOS类目	Plant Sciences ; Ecology ; Forestry
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology ; Forestry
来源机构	中国科学院新疆生态与地理研究所 ; 中国农业大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/351036
作者单位	[Luo, Yan; Li, Kaihui; Mohammat, Anwar; Han, Wenxuan] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, State Key Lab Desert & Oasis Ecol, Urumqi, Peoples R China; [Luo, Yan; Li, Kaihui] Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Bayinbuluk Grassland Ecosyst Res Stn, Bayinbuluk, Peoples R China; [Luo, Yan] Univ Chinese Acad Sci, Beijing, Peoples R China; [Luo, Yan; Li, Kaihui; Mohammat, Anwar; Han, Wenxuan] CAS Res Ctr Ecol & Environm Cent Asia, Urumqi, Peoples R China; [Yan, Zhengbing] Univ Hong Kong, Sch Biol Sci, Hong Kong, Peoples R China; [Liu, Sining] Sichuan Agr Univ, Inst Ecol & Forestry, Rainy Area West China Plantat Ecosyst Permanent S, Chengdu, Peoples R China; [Chen, Jiashu] China Agr Univ, Coll Resources & Environm Sci, Dept Ecol & Ecol Engn, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Luo, Yan,Yan, Zhengbing,Liu, Sining,et al. Variation in desert shrub foliar pH in relation to drought and salinity in Xinjiang, China[J]. 中国科学院新疆生态与地理研究所, 中国农业大学,2021,32(3).
APA	Luo, Yan.,Yan, Zhengbing.,Liu, Sining.,Chen, Jiashu.,Li, Kaihui.,...&Han, Wenxuan.(2021).Variation in desert shrub foliar pH in relation to drought and salinity in Xinjiang, China.JOURNAL OF VEGETATION SCIENCE,32(3).
MLA	Luo, Yan,et al."Variation in desert shrub foliar pH in relation to drought and salinity in Xinjiang, China".JOURNAL OF VEGETATION SCIENCE 32.3(2021).