Experimental warming drives a seasonal shift of ecosystem carbon exchange in Tibetan alpine meadow
Zhu, JT; Zhang, YJ; Jiang, L
2017
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
Volume233Pages:242-249
AbstractThe effects of warming-shifted plant phenology on ecosystem carbon (C) cycling have received increasing attention in recent years. However, there is a lack of evidence and mechanistic understanding of how warming-shifted plant phenology influences ecosystem C cycling. In this study, we conducted a field experiment to investigate the effects of warming on phenology and ecosystem C exchange in a Tibetan alpine meadow during the 2014 and 2015 growing seasons. Our results indicated that warming led to later green-up in spring by aggravating water limitation but little change in autumn phenology, resulting in shortened growing season length. Interestingly, we found warming caused a seasonal shift of ecosystem C exchange. During the early summer monsoon, ecosystem C uptake was suppressed by warming due to the delay of phenological development. However, warming accelerated ecosystem C uptake and promoted ecosystem C uptake under ample water conditions during the late summer monsoon. As a result, although warming shortened the growing season length, it had no significant effects on gross primary production (GPP) and net ecosystem production (NEP). Our results will improve our understanding of the mechanisms of how warming-shifted plant phenology influences ecosystem C cycling in semiarid alpine ecosystems. (C) 2016 Elsevier B.V. All rights reserved.
SubtypeJournal
KeywordExperimental warming Phenological shifts Growing season length Ecosystem carbon exchange Alpine grasslands
Subject AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS Subject ExtendedAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS KeywordTALLGRASS PRAIRIE ; CLIMATE-CHANGE ; REPRODUCTIVE PHENOLOGY ; NITROGEN ADDITION ; PLANT PHENOLOGY ; CYCLE FEEDBACK ; RESPONSES ; STEPPE ; PRODUCTIVITY ; RESPIRATION
Indexed BySCI
Language英语
WOS IDWOS:000393259400022
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:9[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/44100
Collection生态系统网络观测与模拟院重点实验室_生态网络实验室
Recommended Citation
GB/T 7714
Zhu, JT,Zhang, YJ,Jiang, L. Experimental warming drives a seasonal shift of ecosystem carbon exchange in Tibetan alpine meadow[J]. AGRICULTURAL AND FOREST METEOROLOGY,2017,233:242-249.
APA Zhu, JT,Zhang, YJ,&Jiang, L.(2017).Experimental warming drives a seasonal shift of ecosystem carbon exchange in Tibetan alpine meadow.AGRICULTURAL AND FOREST METEOROLOGY,233,242-249.
MLA Zhu, JT,et al."Experimental warming drives a seasonal shift of ecosystem carbon exchange in Tibetan alpine meadow".AGRICULTURAL AND FOREST METEOROLOGY 233(2017):242-249.
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