气候变化领域集成服务门户(CCPortal): Hydroperiod; soil moisture and bioturbation are critical drivers of greenhouse gas fluxes and vary as a function of landuse change in mangroves of Sulawesi; Indonesia

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DOI	10.1016/j.scitotenv.2018.11.092
	Hydroperiod; soil moisture and bioturbation are critical drivers of greenhouse gas fluxes and vary as a function of landuse change in mangroves of Sulawesi; Indonesia
	Cameron C.; Hutley L.B.; Friess D.A.; Munksgaard N.C.
发表日期	2019
ISSN	489697
起始页码	365
结束页码	377
卷号	654
英文摘要	The loss and degradation of mangroves can result in potentially significant sources of atmospheric greenhouse gas (GHG) emissions. For mangrove rehabilitation carbon projects, quantifying GHG emissions as forests regenerate is a key accounting requirement. The current study is one of the first attempts to systematically quantify emissions of carbon dioxide (CO 2 ), nitrous oxide (N 2 O) and methane (CH 4 ) from: 1) aquaculture ponds, 2) rehabilitating mangroves, and 3) intact mangrove sites and frame GHG flux within the context of landuse change. In-situ static chamber measurements were made at three contrasting locations in Sulawesi, Indonesia. The influence of key biophysical variables known to affect GHG flux was also assessed. Peak GHG flux was observed at rehabilitating (32.8 ± 2.1 Mg CO 2 e ha −1 y −1 ) and intact, mature reference sites (43.8 ± 4.5 Mg CO 2 e ha −1 y −1 ) and a dry, exposed disused aquaculture pond (30.6 ± 1.9 Mg CO 2 e ha −1 y −1 ). Emissions were negligible at low productivity rehabilitating sites with high hydroperiod (mean 1.0 ± 0.1 Mg CO 2 e ha −1 y −1 ) and an impounded, operational aquaculture pond (1.1 ± 0.2 Mg CO 2 e ha −1 y −1 ). Heterogeneity in biophysical conditions and geomorphic position exerted a strong influence on GHG flux, with the longer hydroperiod and higher soil moisture content of seaward fringing mangroves correlated with decreased fluxes. A greater abundance of Mud lobster mounds and root structures in landward mangroves correlated to higher flux. When viewed across a landuse change continuum, our results suggest that the initial conversion of mangroves to aquaculture ponds releases extremely high rates of GHGs. Furthermore, the re-institution of hydrological regimes in dry, disused aquaculture ponds to facilitate tidal flushing is instrumental in rapidly mediating GHG flux, leading to a significant reduction in baseline emissions. This is an important consideration for forest carbon project proponents seeking to maximise creditable GHG emissions reductions and removals. © 2018
英文关键词	Aquaculture; GHG emissions; Intact mangroves; Land use, land use change and forestry (LULUCF); Rehabilitation; Restoration
scopus关键词	Aquaculture; Carbon dioxide; Gas emissions; Image reconstruction; Lakes; Land use; Magnesium; Nitrogen oxides; Patient rehabilitation; Reforestation; Sanitary sewers; Soil moisture; Atmospheric greenhouse; Bio-physical variables; Biophysical conditions; GHG emission; Greenhouse gas fluxes; Intact mangroves; Land use change and forestries; Mangrove rehabilitations; Greenhouse gases; carbon dioxide; methane; nitrous oxide; carbon dioxide; methane; nitrous oxide; aquaculture; bioturbation; carbon dioxide; environmental restoration; greenhouse gas; hydrological regime; hydroperiod; land use change; mangrove; methane; nitrous oxide; soil moisture; Article; autecology; bioremediation; bioturbation; carbon footprint; controlled study; environmental impact; geographic distribution; greenhouse gas; hydroperiod; Indonesia; land use; mangrove; priority journal; soil analysis; soil change; soil chemistry; soil moisture; soil quality; analysis; aquaculture; chemistry; environmental monitoring; forest; greenhouse gas; pond; procedures; season; soil; water flow; Greater Sunda Islands; Sulawesi; Sunda Isles; Rhizophoraceae; Aquaculture; Carbon Dioxide; Environmental Monitoring; Forests; Greenhouse Gases; Indonesia; Methane; Nitrous Oxide; Ponds; Seasons; Soil; Water Movements
来源期刊	Science of the Total Environment
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176473
作者单位	Research Institute for the Environment and Livelihoods, Charles Darwin University, Darwin, Northern Territory, Australia; Department of Geography, National University of Singapore, 1 Arts Link117570, Singapore
推荐引用方式 GB/T 7714	Cameron C.,Hutley L.B.,Friess D.A.,et al. Hydroperiod; soil moisture and bioturbation are critical drivers of greenhouse gas fluxes and vary as a function of landuse change in mangroves of Sulawesi; Indonesia[J],2019,654.
APA	Cameron C.,Hutley L.B.,Friess D.A.,&Munksgaard N.C..(2019).Hydroperiod; soil moisture and bioturbation are critical drivers of greenhouse gas fluxes and vary as a function of landuse change in mangroves of Sulawesi; Indonesia.Science of the Total Environment,654.
MLA	Cameron C.,et al."Hydroperiod; soil moisture and bioturbation are critical drivers of greenhouse gas fluxes and vary as a function of landuse change in mangroves of Sulawesi; Indonesia".Science of the Total Environment 654(2019).