IB-CAS  > 植被与环境变化国家重点实验室
Leaf Area Rather Than Photosynthetic Rate Determines the Response of Ecosystem Productivity to Experimental Warming in an Alpine Steppe
Li, Fei1; Peng, Yunfeng; Zhang, Dianye1; Yang, Guibiao1; Fang, Kai1; Wang, Guanqin1; Wang, Jun1; Yu, Jianchun1; Zhou, Guoying2,3; Yang, Yuanhe1
2019
Source PublicationJOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES
ISSN2169-8953
Volume124Issue:7Pages:2277-2287
AbstractGross primary productivity (GPP) plays an important role in mediating the feedback between land carbon (C) cycle and climate warming. However, knowledge about the mechanisms regulating the response of GPP to warming is still limited. Based on a four-year field manipulative experiment, we examined the warming effects on GPP and the potential mechanisms in a typical alpine steppe on the Tibetan Plateau. Our results revealed that elevated temperature significantly increased GPP over the study period. The warming-induced increase in GPP was driven by the increased leaf area index, which was derived from the increase in aboveground biomass of forb. By contrast, warming had no significant effects on photosynthesis per leaf area, likely due to the offset of warming-induced increase in leaf nitrogen concentration and decrease in soil moisture. These results demonstrate that leaf area rather than leaf photosynthetic rate determines the response of ecosystem productivity to climate warming in this alpine steppe. More studies in other ecosystems are called for to test the observed mechanisms responsible for warming effects on GPP, so as to improve predictions of terrestrial C cycle under changing environment.
Keywordclimate warming gross primary productivity leaf area index photosynthetic rate leaf nitrogen concentration plant functional types
Subject AreaEnvironmental Sciences ; Geosciences, Multidisciplinary
DOI10.1029/2019JG005193
Indexed BySCI
Language英语
WOS KeywordCARBON-CYCLE FEEDBACK ; TERRESTRIAL ECOSYSTEMS ; CLIMATE-CHANGE ; CO2 FLUX ; PLANT ; NITROGEN ; WATER ; DIVERSITY ; INCREASES ; AVAILABILITY
WOS Research AreaEnvironmental Sciences & Ecology ; Geology
WOS IDWOS:000481443800032
PublisherAMER GEOPHYSICAL UNION
SubtypeArticle
Publication PlaceWASHINGTON
EISSN2169-8961
Funding OrganizationNational Natural Science Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670482, 31825006, 41877046] ; Key Research Program of Frontier Sciences, Chinese Academy of Sciences [QYZDB-SSWSMC049] ; Strategic Priority Research Program of the Chinese Academy of SciencesChinese Academy of Sciences [XDA19070303] ; Chinese Academy of Sciences-Peking University Pioneer Cooperation Team
Corresponding Author Emailyhyang@ibcas.ac.cn
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/19462
Collection植被与环境变化国家重点实验室
Affiliation1.Chinese Acad Sci, Inst Bot, State Key Lab Vegetat & Environm Change, Beijing, Peoples R China
2.Univ Chinese Acad Sci, Coll Life Sci, Beijing, Peoples R China
3.Chinese Acad Sci, Northwest Inst Plateau Biol, Xining, Qinghai, Peoples R China
4.Chinese Acad Sci, Key Lab Tibetan Med Res, Xining, Qinghai, Peoples R China
Recommended Citation
GB/T 7714
Li, Fei,Peng, Yunfeng,Zhang, Dianye,et al. Leaf Area Rather Than Photosynthetic Rate Determines the Response of Ecosystem Productivity to Experimental Warming in an Alpine Steppe[J]. JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,2019,124(7):2277-2287.
APA Li, Fei.,Peng, Yunfeng.,Zhang, Dianye.,Yang, Guibiao.,Fang, Kai.,...&Yang, Yuanhe.(2019).Leaf Area Rather Than Photosynthetic Rate Determines the Response of Ecosystem Productivity to Experimental Warming in an Alpine Steppe.JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES,124(7),2277-2287.
MLA Li, Fei,et al."Leaf Area Rather Than Photosynthetic Rate Determines the Response of Ecosystem Productivity to Experimental Warming in an Alpine Steppe".JOURNAL OF GEOPHYSICAL RESEARCH-BIOGEOSCIENCES 124.7(2019):2277-2287.
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