Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1038/s41558-020-0806-0 |
Light limitation regulates the response of autumn terrestrial carbon uptake to warming | |
Zhang, Yao1; Commane, Roisin2; Zhou, Sha1,2,3; Williams, A. Park2; Gentine, Pierre1,3 | |
2020-07-06 | |
发表期刊 | NATURE CLIMATE CHANGE |
ISSN | 1758-678X |
EISSN | 1758-6798 |
出版年 | 2020 |
文章类型 | Article;Early Access |
语种 | 英语 |
国家 | USA |
英文摘要 | Phenological shifts due to warming extend the growing season for plants, with implications for ecosystem productivity. Carbon uptake through photosynthesis is limited by radiation, particularly in autumn, which explains contrasting regional responses of autumn carbon uptake to rising temperatures. Global warming is projected to shift the phenology and increase the productivity of northern ecosystems(1-6). Both changes will further feed back to climate through biophysical and biogeochemical processes and are critical for future prediction(7,8). However, it remains unclear whether warming and the extended growing season, especially in autumn, would lead to increased net ecosystem carbon uptake(9,10). Here we analyse satellite observations, field measurements and model simulations and show a prevalent radiation limitation on carbon uptake in northern ecosystems, especially in autumn. By comparing the start and end of the growing season estimated from vegetation indices and from solar-induced chlorophyll fluorescence (a proxy for gross primary production(11,12)(GPP)), we find a greater change in greenness-based start and end of season than that from GPP, mostly caused by the radiation limitation on photosynthesis. This radiation limitation explains the contrasting responses of autumn net carbon exchanges to warming, using both eddy covariance measurements and model simulations from Coupled Model Intercomparison Project Phase 5. Regions with weak radiation limitation benefit more from warming and enhanced vegetation greenness in autumn, where GPP increases can outweigh the warming-induced respiration carbon losses. With continued warming, radiation limitation will increase and exert a strong upper bound on northern ecosystems to act as carbon sinks. |
领域 | 资源环境 |
收录类别 | SCI-E ; SSCI |
WOS记录号 | WOS:000545939000004 |
WOS关键词 | LAND-SURFACE ; CHLOROPHYLL FLUORESCENCE ; VEGETATION ; PHENOLOGY ; CO2 ; TEMPERATURE ; PHOTOSYNTHESIS ; FEEDBACKS ; EXCHANGE ; FOREST |
WOS类目 | Environmental Sciences ; Environmental Studies ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/282711 |
专题 | 资源环境科学 |
作者单位 | 1.Columbia Univ, Dept Earth & Environm Engn, New York, NY 10027 USA; 2.Columbia Univ, Lamont Doherty Earth Observ, Palisades, NY USA; 3.Columbia Univ, Earth Inst, New York, NY USA |
推荐引用方式 GB/T 7714 | Zhang, Yao,Commane, Roisin,Zhou, Sha,et al. Light limitation regulates the response of autumn terrestrial carbon uptake to warming[J]. NATURE CLIMATE CHANGE,2020. |
APA | Zhang, Yao,Commane, Roisin,Zhou, Sha,Williams, A. Park,&Gentine, Pierre.(2020).Light limitation regulates the response of autumn terrestrial carbon uptake to warming.NATURE CLIMATE CHANGE. |
MLA | Zhang, Yao,et al."Light limitation regulates the response of autumn terrestrial carbon uptake to warming".NATURE CLIMATE CHANGE (2020). |
条目包含的文件 | 条目无相关文件。 |
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