DOI: 10.1111/gcb.14931
论文题名: Sensitivity of mangrove soil organic matter decay to warming and sea level change
作者: Arnaud M. ; Baird A.J. ; Morris P.J. ; Dang T.H. ; Nguyen T.T.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2020
卷: 26, 期: 3 语种: 英语
英文关键词: belowground carbon
; blue carbon
; climate change
; coastal wetland
; greenhouse gas production
; soil elevation
Scopus关键词: belowground biomass
; carbon
; climate change
; coastal wetland
; gas production
; greenhouse gas
; mangrove
; sea level change
; sensitivity analysis
; soil organic matter
; Rhizophoraceae
英文摘要: Mangroves are among the world's most carbon-dense ecosystems, but they are threatened by rapid climate change and rising sea levels. The accumulation and decomposition of soil organic matter (SOM) are closely tied to mangroves' carbon sink functions and resistance to rising sea levels. However, few studies have investigated the response of mangrove SOM dynamics to likely future environmental conditions. We quantified how mangrove SOM decay is affected by predicted global warming (+4°C), sea level changes (simulated by altering of the inundation duration to 0, 2, and 6 hr/day), and their interaction. Whilst changes in inundation duration between 2 and 6 hr/day did not affect SOM decay, the treatment without inundation led to a 60% increase. A warming of 4°C caused SOM decay to increase by 21%, but longer inundation moderated this temperature-driven increase. Our results indicate that (a) sea level rise is unlikely to decrease the SOM decay rate, suggesting that previous mangrove elevation gain, which has allowed mangroves to persist in areas of sea level rise, might result from changes in root production and/or mineral sedimentation; (b) sea level fall events, predicted to double in frequency and area, will cause periods of intensified SOM decay; (c) changing tidal regimes in mangroves due to sea level rise might attenuate increases in SOM decay caused by global warming. Our results have important implications for forecasting mangrove carbon dynamics and the persistence of mangroves and other coastal wetlands under future scenarios of climate change. © 2019 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/158821
Appears in Collections: 气候变化与战略
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作者单位: School of Geography, University of Leeds, Leeds, United Kingdom; Faculty of Geology and Petroleum Engineering, Ho Chí Minh City University of Technology (HCMUT), Ho Chí Minh, Viet Nam; Faculty of Geology, VNU University of Science, Vietnam National University, Hanoi, Ha Noi, Viet Nam
Recommended Citation:
Arnaud M.,Baird A.J.,Morris P.J.,et al. Sensitivity of mangrove soil organic matter decay to warming and sea level change[J]. Global Change Biology,2020-01-01,26(3)