气候变化领域集成服务门户(CCPortal): Relationship between relative growth rate and C:N:P stoichiometry for the marsh herbaceous plants under water-level stress conditions

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DOI	10.1016/j.gecco.2020.e01416
	Relationship between relative growth rate and C:N:P stoichiometry for the marsh herbaceous plants under water-level stress conditions
	Sun, Weizhen; Shi, Fuxi; Chen, Huimin; Zhang, Yang; Guo, Yuedong; Mao, Rong
通讯作者	Shi, FX (通讯作者)，Jiangxi Agr Univ, Coll Forestry, 1101 Zhimin Rd, Nanchang 330045, Jiangxi, Peoples R China.
发表日期	2021
ISSN	2351-9894
卷号	25
英文摘要	It is well-known that relative growth rate (RGR) is closely related to C:N:P stoichiometry at the whole-plant level, yet it remains a misgiving to determine whether the growth-rate hypothesis is consistent between plant organs. Here, we examined RGR, C, N, P concentrations and their ratios of N:C, P:C, and N:P for four marsh herbaceous species (two gramineous species, Deyeuxia angustifolia and Glyceria spiculosa; two sedge species, Carex pseudocuraica and Carex lasiocarpa) grown in an increasing water level gradient (-5, 0, +5, and +15 cm relative to the soil surface) in the Sanjiang Plain of Northeast China. The applicability of the growth-rate hypothesis to leaf, stem, root, and total biomass was subsequently tested. With the increase of flooding stress, RGR and root mass ratio decreased to a certain degree for all species, whereas the above-ground biomass allocation was increased. The variation of N was much greater than that of P; hence the change in N:P ratios was determined mainly by N concentration. RGR was positively correlated with N concentration, N:C, and N:P for stem and total biomass when the data were pooled for all species but was negatively correlated with those for leaf and root organs. Furthermore, the theoretical predictions regarding the relationship between RGR and nutrient ratios were not always the case for each of the marsh herbs. Therefore, our results indicated that the organ-specific and species-specific for vascular plants should be carefully considered when using the theoretical association of growth rate with C:N:P stoichiometry. (c) 2020 The Author(s). Published by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
英文关键词	C:N:P stoichiometry; Growth-rate hypothesis; Biomass allocation pattern; Flooding stress
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology
WOS记录号	WOS:000615947800020
来源期刊	GLOBAL ECOLOGY AND CONSERVATION
来源机构	中国科学院西北生态环境资源研究院
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/254800
作者单位	[Sun, Weizhen] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, State Key Lab Cryospher Sci, Lanzhou 730000, Gansu, Peoples R China; [Shi, Fuxi; Chen, Huimin; Zhang, Yang; Mao, Rong] Jiangxi Agr Univ, Coll Forestry, Key Lab State Forestry & Grassland Adm Forest Eco, Nanchang 330045, Jiangxi, Peoples R China; [Shi, Fuxi; Zhang, Yang; Mao, Rong] Wuyishanxipo Observat & Res Stn Forest Ecosyst, Zixi 335300, Peoples R China; [Guo, Yuedong] Chinese Acad Sci, Northeast Inst Geog & Agroecol, Key Lab Wetland Ecol & Environm, Changchun 130102, Peoples R China
推荐引用方式 GB/T 7714	Sun, Weizhen,Shi, Fuxi,Chen, Huimin,et al. Relationship between relative growth rate and C:N:P stoichiometry for the marsh herbaceous plants under water-level stress conditions[J]. 中国科学院西北生态环境资源研究院,2021,25.
APA	Sun, Weizhen,Shi, Fuxi,Chen, Huimin,Zhang, Yang,Guo, Yuedong,&Mao, Rong.(2021).Relationship between relative growth rate and C:N:P stoichiometry for the marsh herbaceous plants under water-level stress conditions.GLOBAL ECOLOGY AND CONSERVATION,25.
MLA	Sun, Weizhen,et al."Relationship between relative growth rate and C:N:P stoichiometry for the marsh herbaceous plants under water-level stress conditions".GLOBAL ECOLOGY AND CONSERVATION 25(2021).