干旱区生态环境知识资源中心(Arid): N, P and K stoichiometry and resorption efficiency of nine dominant shrub species in the deserts of Xinjiang, China

Arid

DOI	10.1111/1440-1703.12111
	N, P and K stoichiometry and resorption efficiency of nine dominant shrub species in the deserts of Xinjiang, China
	Luo, Yan 1,2; Peng, Qingwen 1,2; He, Maosong 1,2; Zhang, Meixia 3; Liu, Yanyan 1,4; Gong, Yanming 1,4; Eziz, Anwar 5; Li, Kaihui 1,4; Han, Wenxuan 1,6
通讯作者	Han, Wenxuan
来源期刊	ECOLOGICAL RESEARCH
ISSN	0912-3814
EISSN	1440-1703
出版年	2020
卷号	35 期号:4 页码:625-637
英文摘要	Plant nutrient stoichiometry and resorption efficiency are important functional traits related to plant nutrient status and biogeochemical cycling. Such traits are not well documented for desert shrubs. We studied how the stoichiometry and resorption efficiency of nitrogen (N), phosphorus (P) and potassium (K) varied among nine dominant desert shrub species through systematically investigating their concentrations in green and senesced leaves (or assimilation branches) of desert plants at 24 sites across Xinjiang, China. We hypothesized that desert shrubs should have low leaf N and P but high leaf K concentrations; and have high leaf N and P but low K resorption efficiency, given the low N and P but high K availability in this arid region. These shrubs had a mean leaf N concentration of 18.9 mg g(-1), and lower leaf P but higher leaf K concentration (1.2 and 17.0 mg g(-1), respectively) than desert plants at national and global levels. The mean (+/- SE) resorption efficiencies of leaf N, P and K in the desert shrubs were 51.0 +/- 2.4%, 54.9 +/- 2.0% and 46.3 +/- 3.5%, respectively, lower than in the woody plants globally. The higher green-leaf N:P (17.2 +/- 0.8) and K:P (15.3 +/- 1.0) relative to the corresponding critical ratios, and the higher P resorption efficiency (54.9%) relative to N (51.0%) and K (46.3%) resorption efficiency, suggested that the dominant desert shrubs in Xinjiang generally suffer from P (or both P and N) deficiency. Additionally, our results showed little evidence of higher resorption relative to their counterparts in most other ecosystems.
英文关键词	arid region Central Asia desert shrubs nutrient limitation relative nutrient resorption efficiency
类型	Article
语种	英语
国家	Peoples R China
收录类别	SCI-E
WOS记录号	WOS:000522969700001
WOS关键词	FOLIAR NUTRIENT RESORPTION ; LEAF NITROGEN ; ABSCISIC-ACID ; PHOSPHORUS STOICHIOMETRY ; HYDRAULIC CONDUCTIVITY ; TERRESTRIAL PLANTS ; MINERAL-NUTRITION ; WOODY-PLANTS ; GROWTH-RATE ; LIFE-FORM
WOS类目	Ecology
WOS研究方向	Environmental Sciences & Ecology
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 ; 北京大学
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/314368
作者单位	1.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, CAS Key Lab Biogeog & Bioresource Arid Land, Urumqi, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.China Agr Univ, Coll Resources & Environm Sci, Dept Ecol & Ecol Engn, Beijing, Peoples R China; 4.Chinese Acad Sci, Xinjiang Inst Ecol & Geog, Bayanbulak Grassland Ecosyst Res Stn, Bayingol, Peoples R China; 5.Peking Univ, Coll Urban & Environm Sci, Beijing, Peoples R China; 6.Chinese Acad Sci, Res Ctr Ecol & Environm Cent Asia, Urumqi, Peoples R China
推荐引用方式 GB/T 7714	Luo, Yan,Peng, Qingwen,He, Maosong,et al. N, P and K stoichiometry and resorption efficiency of nine dominant shrub species in the deserts of Xinjiang, China[J]. 中国科学院新疆生态与地理研究所, 中国农业大学, 北京大学,2020,35(4):625-637.
APA	Luo, Yan.,Peng, Qingwen.,He, Maosong.,Zhang, Meixia.,Liu, Yanyan.,...&Han, Wenxuan.(2020).N, P and K stoichiometry and resorption efficiency of nine dominant shrub species in the deserts of Xinjiang, China.ECOLOGICAL RESEARCH,35(4),625-637.
MLA	Luo, Yan,et al."N, P and K stoichiometry and resorption efficiency of nine dominant shrub species in the deserts of Xinjiang, China".ECOLOGICAL RESEARCH 35.4(2020):625-637.