IEECAS OpenIR  > 黄土与第四纪地质国家重点实验室(2010~)
Nutrient stoichiometry of three plant species under a natural nutrient gradient of a semiarid small watershed
Qiu, LJ (Qiu, Linjing)[ 1 ]; Wei, XR (Wei, Xiaorong)[ 2 ]; Li, LH (Li, Linhai)[ 3 ]
2013-04-01
Source PublicationACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE
Volume63Issue:3Pages:231-240
Subtype期刊论文
Abstract

Current understanding of plant nutrient stoichiometry mainly focus on C, N, and P and in humid and tropic regions. This study was conducted to investigate nutrient stoichiometry in a semaird small watershed. Three dominant plants, Medicago sativa, Stipa bungeana, and Artemisia sacrorum, sampled along a natural nutrient gradient, were analyzed with respect to plant nutrient stoichiometry (N:P, N:K, and K:P). The results showed that nutrient stoichiometry varied greatly between plants and within the same plant at the small watershed scale. At the natural nutrient gradient, N:P of the N limited plant is mainly determined by plant N, while that of P or P+N limited plants were dominated by plant P. The N:K and K:P of both N limited and P or N+P limited plants were mainly controlled by plant K with weak relations to nutrient limitations. Aboveground biomass directly influences nutrient stoichiometry, while extractable soil nutrients exert their impacts on stoichiometry through aboveground biomass.

KeywordAboveground Biomass Nutrient Gradient Nutrient Stoichiometry Plant Nutrients Small Watershed Soil Extractablenutrients
DOI10.1080/09064710.2012.753107
Indexed BySCI
Language英语
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Document Type期刊论文
Identifierhttp://ir.ieecas.cn/handle/361006/9984
Collection黄土与第四纪地质国家重点实验室(2010~)
Corresponding AuthorWei, XR (Wei, Xiaorong)[ 2 ]
Affiliation1.Institute of Earth Environment, Chinese Academy of Sciences, Xi'an, Shaanxi, China;
2.Institute of Soil and Water Conservation, Northwest A&F University, Yangling, Shaanxi,China;
3.Beijing Museum of Natural History, Dongcheng, Beijing, China
Recommended Citation
GB/T 7714
Qiu, LJ ,Wei, XR ,Li, LH . Nutrient stoichiometry of three plant species under a natural nutrient gradient of a semiarid small watershed[J]. ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,2013,63(3):231-240.
APA Qiu, LJ ,Wei, XR ,&Li, LH .(2013).Nutrient stoichiometry of three plant species under a natural nutrient gradient of a semiarid small watershed.ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE,63(3),231-240.
MLA Qiu, LJ ,et al."Nutrient stoichiometry of three plant species under a natural nutrient gradient of a semiarid small watershed".ACTA AGRICULTURAE SCANDINAVICA SECTION B-SOIL AND PLANT SCIENCE 63.3(2013):231-240.
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