DOI: 10.1111/gcb.14322
Scopus记录号: 2-s2.0-85051565192
论文题名: Factors regulating carbon sinks in mangrove ecosystems
作者: Li S.-B. ; Chen P.-H. ; Huang J.-S. ; Hsueh M.-L. ; Hsieh L.-Y. ; Lee C.-L. ; Lin H.-J.
刊名: Global Change Biology
ISSN: 13541013
出版年: 2018
卷: 24, 期: 9 起始页码: 4195
结束页码: 4210
语种: 英语
英文关键词: Avicennia marina
; carbon budget
; carbon burial
; decomposition
; Kandelia obovata
; net production
Scopus关键词: Avicennia marina
; Kandelia obovata
; Rhizophoraceae
英文摘要: Mangroves are recognized as one of the richest carbon storage systems. However, the factors regulating carbon sinks in mangrove ecosystems are still unclear, particularly in the subtropical mangroves. The biomass, production, litterfall, detrital export and decomposition of the dominant mangrove vegetation in subtropical (Kandelia obovata) and tropical (Avicennia marina) Taiwan were quantified from October 2011 to July 2014 to construct the carbon budgets. Despite the different tree species, a principal component analysis revealed the site or environmental conditions had a greater influence than the tree species on the carbon processes. For both species, the net production (NP) rates ranged from 10.86 to 27.64 Mg C ha−1 year−1 and were higher than the global average rate due to the high tree density. While most of the litterfall remained on the ground, a high percentage (72%–91%) of the ground litter decomposed within 1 year and fluxed out of the mangroves. However, human activities might cause a carbon flux into the mangroves and a lower NP rate. The rates of the organic carbon export and soil heterotrophic respiration were greater than the global mean values and those at other locations. Only a small percentage (3%–12%) of the NP was stored in the sediment. The carbon burial rates were much lower than the global average rate due to their faster decomposition, indicating that decomposition played a critical role in determining the burial rate in the sediment. The summation of the organic and inorganic carbon fluxes and soil heterotrophic respiration well exceeded the amount of litter decomposition, indicating an additional source of organic carbon that was unaccounted for by decomposition in the sediment. Sediment-stable isotope analyses further suggest that the trapping of organic matter from upstream rivers or adjacent waters contributed more to the mangrove carbon sinks than the actual production of the mangrove trees. © 2018 John Wiley & Sons Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/110277
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Department of Life Sciences and Innovation and Development Center of Sustainable Agriculture, National Chung Hsing University, Taichung, Taiwan; Endemic Species Research Institute, Chichi, Taiwan; Biodiversity Research Center, Academia Sinica, Taipei, Taiwan
Recommended Citation:
Li S.-B.,Chen P.-H.,Huang J.-S.,et al. Factors regulating carbon sinks in mangrove ecosystems[J]. Global Change Biology,2018-01-01,24(9)