globalchange  > 气候减缓与适应
DOI: 10.1007/s10533-018-0444-z
Scopus记录号: 2-s2.0-85046029282
论文题名:
Carbon biogeochemistry and CO2 emissions in a human impacted and mangrove dominated tropical estuary (Can Gio, Vietnam)
作者: David F.; Meziane T.; Tran-Thi N.-T.; Truong van V.; Thanh-Nho N.; Taillardat P.; Marchand C.
刊名: Biogeochemistry
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2018
起始页码: 1
结束页码: 15
语种: 英语
英文关键词: Carbon speciation ; Tidal cycle ; Tropical estuary ; Vietnam ; Water–air CO2 emissions
英文摘要: The quantitative contribution of tropical estuaries to the atmospheric CO2 budget has large uncertainties, both spatially and seasonally. We investigated the seasonal and spatial variations of carbon biogeochemistry downstream of Ho Chi Minh City (Southern Vietnam). We sampled four sites distributed from downstream of a highly urbanised watershed through mangroves to the South China Sea coast during the dry and wet seasons. Measured partial pressure of CO2 (pCO2) ranged from 660 to 3000 μatm during the dry season, and from 740 to 5000 μatm during the wet season. High organic load, dissolved oxygen saturation down to 17%, and pCO2 up to 5000 μatm at the freshwater endmember of the estuary reflected the intense human pressure on this ecosystem. We show that releases from mangrove soils affect the water column pCO2 in this large tropical estuary (~600 m wide and 10–20 m deep). This study is among the few to report direct measurements of both water pCO2 and CO2 emissions in a Southeast Asian tropical estuary located in a highly urbanised watershed. It shows that the contribution of such estuaries may have been previously underestimated, with CO2 emissions ranging from 74 to 876 mmol m−2 day−1 at low current velocity (< 0.2 m s−1). Corresponding gas transfer velocities k600, ranging from 1.7 to 11.0 m day−1, were about 2 to 4 times of k600 estimated using published literature equations. © 2018 Springer International Publishing AG, part of Springer Nature
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资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/83161
Appears in Collections:气候减缓与适应
气候变化事实与影响

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作者单位: Sorbonne Universités, MNHN, UPMC Univ Paris 06, UNICAEN, UA, CNRS, IRD, Biologie des Organismes et Ecosystèmes Aquatiques (BOREA), 61 rue Buffon, CP53, Paris, France; Faculty of Chemistry, University of Science Vietnam National University, Ho Chi Minh City, Viet Nam; IMPMC, Institut de Recherche pour le Développement (IRD), UPMC, CNRS, MNHN, Noumea, New Caledonia, France; Nong Lam University, Linh Trung, Thu Duc, Ho Chi Minh City, Viet Nam; Department of Geography, National University of Singapore, 1 Arts Link, Singapore, Singapore

Recommended Citation:
David F.,Meziane T.,Tran-Thi N.-T.,et al. Carbon biogeochemistry and CO2 emissions in a human impacted and mangrove dominated tropical estuary (Can Gio, Vietnam)[J]. Biogeochemistry,2018-01-01
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