气候变化领域集成服务门户(CCPortal): Leaf and Community Photosynthetic Carbon Assimilation of Alpine Plants Under in-situ Warming

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DOI	10.3389/fpls.2021.690077
	Leaf and Community Photosynthetic Carbon Assimilation of Alpine Plants Under in-situ Warming
	Zhou, Zijuan; Su, Peixi; Wu, Xiukun; Shi, Rui; Ding, Xinjing
通讯作者	Su, PX (通讯作者)，Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China.
发表日期	2021
ISSN	1664-462X
卷号	12
英文摘要	The Tibetan Plateau is highly sensitive to elevated temperatures and has experienced significant climate warming in the last decades. While climate warming is known to greatly impact alpine ecosystems, the gas exchange responses at the leaf and community levels to climate warming in alpine meadow ecosystems remain unclear. In this study, the alpine grass, Elymus nutans, and forb, Potentilla anserina, were grown in open-top chambers (OTCs) for 3 consecutive years to evaluate their response to warming. Gas exchange measurements were used to assess the effects of in-situ warming on leaf- and community-level photosynthetic carbon assimilation based on leaf photosynthetic physiological parameters. We introduced a means of up-scaling photosynthetic measurements from the leaf level to the community level based on six easily measurable parameters, including leaf net photosynthetic rate, fresh leaf mass per unit leaf area, fresh weight of all plant leaves in the community, the percentage of healthy leaves, the percentage of received effective light by leaves in the community, and community coverage. The community-level photosynthetic carbon assimilation and productivity all increased with warming, and the net photosynthetic rate at the leaf level was significantly higher than at the community level. Under elevated temperature, the net photosynthetic rate of E. nutans decreased, while that of P. anserina increased. These results indicated that climate warming may significantly influence plant carbon assimilation, which could alter alpine meadow community composition in the future.
关键词	TIBETAN PLATEAU CANOPY STRUCTURE RESPONSES CLIMATE TEMPERATURE FOREST CONDUCTANCE RESPIRATION LEAVES MODEL
英文关键词	alpine meadow; climate warming; photosynthesis; plant communities; up-scaling
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000675583700001
来源期刊	FRONTIERS IN PLANT SCIENCE
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/253605
作者单位	[Zhou, Zijuan; Su, Peixi; Shi, Rui; Ding, Xinjing] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Land Surface Proc & Climate Change Cold &, Lanzhou, Peoples R China; [Wu, Xiukun] Chinese Acad Sci, Northwest Inst Ecoenvironm & Resource, Key Lab Desert & Desertificat, Lanzhou, Peoples R China
推荐引用方式 GB/T 7714	Zhou, Zijuan,Su, Peixi,Wu, Xiukun,et al. Leaf and Community Photosynthetic Carbon Assimilation of Alpine Plants Under in-situ Warming[J]. 中国科学院西北生态环境资源研究院,2021,12.
APA	Zhou, Zijuan,Su, Peixi,Wu, Xiukun,Shi, Rui,&Ding, Xinjing.(2021).Leaf and Community Photosynthetic Carbon Assimilation of Alpine Plants Under in-situ Warming.FRONTIERS IN PLANT SCIENCE,12.
MLA	Zhou, Zijuan,et al."Leaf and Community Photosynthetic Carbon Assimilation of Alpine Plants Under in-situ Warming".FRONTIERS IN PLANT SCIENCE 12(2021).