气候变化领域集成服务门户(CCPortal): Mobilization of soil phosphate after 8 years of warming is linked to plant phosphorus-acquisition strategies in an alpine meadow on the Qinghai-Tibetan Plateau

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DOI	10.1111/gcb.15914
	Mobilization of soil phosphate after 8 years of warming is linked to plant phosphorus-acquisition strategies in an alpine meadow on the Qinghai-Tibetan Plateau
	Zhou, Jun; Li, Xiao-Long; Peng, Fei; Li, Chengyang; Lai, Chimin; You, Quangang; Xue, Xian; Wu, Yanhong; Sun, Hongyang; Chen, Yang; Zhong, Hongtao; Lambers, Hans
通讯作者	Peng, F (通讯作者)，Chinese Acad Sci, Northwest Inst Eco Environm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China.
发表日期	2021
ISSN	1354-1013
EISSN	1365-2486
起始页码	6578
结束页码	6591
卷号	27 期号:24
英文摘要	Phosphorus (P) is essential for productivity of alpine grassland ecosystems, which are sensitive to global warming. We tested the hypotheses that (1) mobilized 'calcium-bound inorganic P' (Ca-P-i) is a major source of plant-available P in alpine meadows with alkaline soils after long-term warming, (2) mobilization of Ca-P-i is linked to effective plant carboxylate-releasing P-acquisition strategies under warming, and (3) the mobilization is also related to plant nitrogen (N)-acquisition. We conducted an 8-year warming experiment in an alpine meadow (4635 m above sea level) on the Qinghai-Tibetan Plateau. A significant increase in P concentration in both aboveground and belowground biomass indicates an increased mobilization and assimilation of P by plants under warming. We observed a significant decrease in Ca-P-i, no change in moderately-labile organic P, and an increase in highly resistant organic P after warming. There was no increase in phosphatase activities. Our results indicate that Ca-P-i, rather than organic P was the major source of plant-available P for alpine meadows under warming. Higher leaf manganese concentrations of sedges and forbs after warming indicate that carboxylates released by these plants are a key mechanism of Ca-P-i mobilization. The insignificant increase in Rhizobiales after warming and the very small cover of legumes show a minor role of N-acquisition strategies in solubilizing phosphate. The insignificant change in relative abundance of mycorrhizal fungi and bacteria related to P cycling after warming shows a small contribution of microorganisms to Ca-P-i mobilization. The significant increase in leaf N and P concentrations and N:P ratio of grasses and no change in sedge leaf N:P ratio reflect distinct responses of plant nutrient status to warming due to differences in P-acquisition strategies. We highlight the important effects of belowground P-acquisition strategies, especially plant carboxylate-releasing P-acquisition strategies on responses of plants to global changes in alpine meadows.
关键词	BIOLOGICAL NITROGEN-FIXATION CLIMATE-CHANGE NUTRIENT-ACQUISITION CALCIUM PHOSPHATES INORGANIC NITROGEN DAUCIFORM ROOTS SOLUBILIZATION GRASSLAND CARBON RESPIRATION
英文关键词	alpine grassland; global warming; low-molecular-weight organic acids; mycorrhiza; phosphate-solubilizing bacteria; plant nutrient-acquisition strategies; soil P forms
语种	英语
WOS研究方向	Biodiversity & Conservation ; Environmental Sciences & Ecology
WOS类目	Biodiversity Conservation ; Ecology ; Environmental Sciences
WOS记录号	WOS:000705956300001
来源期刊	GLOBAL CHANGE BIOLOGY
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/254656
作者单位	[Zhou, Jun; Li, Xiao-Long; Wu, Yanhong; Sun, Hongyang; Chen, Yang] Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu, Peoples R China; [Li, Xiao-Long; Li, Chengyang; Lai, Chimin] Univ Chinese Acad Sci, Beijing, Peoples R China; [Peng, Fei] Chinese Acad Sci, Beiluhe Observat & Res Stn Frozen Soil Engn & Env, Lanzhou, Peoples R China; [Peng, Fei; Li, Chengyang; Lai, Chimin; You, Quangang; Xue, Xian] Chinese Acad Sci, Northwest Inst Eco Environm & Resources, Key Lab Desert & Desertificat, Lanzhou 730000, Peoples R China; [Peng, Fei] Tottori Univ, Int Platform Dryland Res & Educ, Tottori, Japan; [Zhong, Hongtao; Lambers, Hans] Univ Western Australia, Sch Biol Sci, Inst Agr, Perth, Australia
推荐引用方式 GB/T 7714	Zhou, Jun,Li, Xiao-Long,Peng, Fei,et al. Mobilization of soil phosphate after 8 years of warming is linked to plant phosphorus-acquisition strategies in an alpine meadow on the Qinghai-Tibetan Plateau[J]. 中国科学院西北生态环境资源研究院,2021,27(24).
APA	Zhou, Jun.,Li, Xiao-Long.,Peng, Fei.,Li, Chengyang.,Lai, Chimin.,...&Lambers, Hans.(2021).Mobilization of soil phosphate after 8 years of warming is linked to plant phosphorus-acquisition strategies in an alpine meadow on the Qinghai-Tibetan Plateau.GLOBAL CHANGE BIOLOGY,27(24).
MLA	Zhou, Jun,et al."Mobilization of soil phosphate after 8 years of warming is linked to plant phosphorus-acquisition strategies in an alpine meadow on the Qinghai-Tibetan Plateau".GLOBAL CHANGE BIOLOGY 27.24(2021).