气候变化领域集成服务门户(CCPortal): Soil degradation determines release of nitrous oxide and dissolved organic carbon from peatlands

CCPortal

DOI	10.1088/1748-9326/ab3947
	Soil degradation determines release of nitrous oxide and dissolved organic carbon from peatlands
	Liu H.; Zak D.; Rezanezhad F.; Lennartz B.
发表日期	2019
ISSN	17489318
卷号	14 期号:9
英文摘要	Carbon (C) and nitrogen (N) release from peatlands are closely related to water management and soil degradation. However, peat degradation has not been explicitly accounted for when estimating national greenhouse gas inventories. Here, we assembled a comprehensive dataset covering European, Russian and Canadian peatlands and introduced soil bulk density (BD) as a proxy for peat degradation to estimate nitrous oxide (N2O) and dissolved organic carbon (DOC) release. The results show that physical and biogeochemical properties of peat are sensitive to soil degradation. The BD is superior to other parameters (C/N, pH) to estimate annual N2O emissions and DOC pore water concentrations. The more a peat soil is degraded, the higher the risk of air/water pollution in peaty landscapes. Even after rewetting, highly degraded soils may exhibit high N2O release rates. The estimated annual N2O-N emissions from European, Russian and Canadian degraded peatlands sum up to approximately 81.0 Gg. The derived BD-based functions can assist in computing global matter fluxes from peatlands. © 2019 The Author(s). Published by IOP Publishing Ltd.
语种	英语
scopus关键词	Biogeochemistry; Greenhouse gases; Nitrogen oxides; Organic carbon; Peat; Stream flow; Water management; Wetlands; Biogeochemical property; Degraded soils; Dissolved organic carbon; Greenhouse gas inventory; Nitrous oxide; Release rate; Soil bulk density; Soil degradation; Soils; biogeochemistry; bulk density; dissolved organic carbon; greenhouse gas; nitrous oxide; peat soil; porewater; soil degradation; water management; Canada; Europe; Russian Federation
来源期刊	Environmental Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/154393
作者单位	Faculty of Agricultural and Environmental Sciences, University of Rostock, Justus-von-Liebig-Weg 6, Rostock, D-18059, Germany; Department of Bioscience, Aarhus University, Vejlsovej 25, Silkeborg, DK-8600, Denmark; Department of Chemical Analytics and Biogeochemistry, Leibniz-Institute of Freshwater Ecology and Inland Fisheries, Müggelseedamm 301, Berlin, D-12587, Germany; Ecohydrology Research Group, Water Institute and Department of Earth and Environmental Sciences, University of Waterloo, 200 University Avenue West, Waterloo, N2L 3G1, Canada
推荐引用方式 GB/T 7714	Liu H.,Zak D.,Rezanezhad F.,et al. Soil degradation determines release of nitrous oxide and dissolved organic carbon from peatlands[J],2019,14(9).
APA	Liu H.,Zak D.,Rezanezhad F.,&Lennartz B..(2019).Soil degradation determines release of nitrous oxide and dissolved organic carbon from peatlands.Environmental Research Letters,14(9).
MLA	Liu H.,et al."Soil degradation determines release of nitrous oxide and dissolved organic carbon from peatlands".Environmental Research Letters 14.9(2019).