DOI: 10.1016/j.atmosenv.2014.12.037
Scopus记录号: 2-s2.0-84918536547
论文题名: Induction of indirect N2O and NO emissions by atmospheric nitrogen deposition in (semi-)natural ecosystems in Switzerland
作者: Bühlmann T ; , Hiltbrunner E ; , Körner C ; , Rihm B ; , Achermann B
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 103 起始页码: 94
结束页码: 101
语种: 英语
英文关键词: Emission factor
; Greenhouse gases
; IPCC/EMEP/EEA methodology
; Nitric oxide
; Nitrous oxide
Scopus关键词: Air pollution
; Forestry
; Greenhouse gases
; Nitric oxide
; Nitrogen
; Nitrogen oxides
; Wetlands
; Atmospheric nitrogen deposition
; Emission factors
; Gaseous nitrogen
; High spatial resolution
; IPCC/EMEP/EEA methodology
; Literature survey
; Natural ecosystem
; Nitrous oxide
; Ecosystems
; nitric oxide
; nitrous oxide
; agricultural land
; atmospheric chemistry
; emission inventory
; greenhouse gas
; guideline
; human activity
; international organization
; literature review
; nitric oxide
; nitrous oxide
; spatial resolution
; air temperature
; Article
; atmospheric deposition
; ecosystem
; forest
; grassland
; land use
; nitrogen deposition
; nitrous oxide emission
; statistical significance
; Switzerland
; wetland
; Deposition
; Emission
; Greenhouse Gases
; Nitrous Oxide
; Switzerland
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: During the past century atmospheric nitrogen deposition increased dramatically due to human activities worldwide. Currently, it exceeds the critical load for nitrogen (CLN) in over 90% of the Swiss forest area and raised bogs, in 80% of all fens and in 30% of species-rich grassland areas in Switzerland. Indirect gaseous nitrogen losses (HNO2, NO, N2O, N2) from these soils induced by atmospheric nitrogen deposition are likely to be substantial. However, the approaches to estimate these indirect N emissions provided by the international organisations (UNFCCC, IPCC; UNECE, EMEP/EEA) are based on agricultural data only. They may not be suitable to estimate the indirect emissions from (semi-)natural ecosystems such as forests, extensively used grassland, and wetlands. The present study aims at calculating ecosystem-specific annual indirect N2O and NO emissions of (semi-)natural ecosystems in Switzerland for the years 1990, 2000, 2007 and 2010 using a simple linear model similar to the international guidelines. The approach here is based on empirical data for (semi-)natural ecosystems, derived from a literature survey, is driven by atmospheric nitrogen deposition and is ecosystem-specific with a high spatial resolution of 100m×100m. Our results show that such ecosystems represent a strong source of indirect N emissions induced by atmospheric nitrogen deposition and emitted 1.61±0.32Gg N2O-N and 2.51±0.53Gg NO-N into the atmosphere in Switzerland in the year 2010, corresponding to 21% of the total Swiss N2O emissions and 10% of the NOx emissions. Thanks to the reduction of N emissions and thereby reduced atmospheric N deposition, the indirect N2O and NO emissions from (semi-)natural ecosystems are estimated to have been both reduced by c. 20% from 1990 to 2010. We conclude that the source strength for N2O and NO emissions of (semi-)natural ecosystems have been underestimated by the current approaches of IPCC and EMEP/EEA by a factor of 4.4 and 17, respectively. In regions and countries with a high fraction of (semi-)natural ecosystems, the approach offered here has the potential to improve the estimate of indirect N emissions substantially. © 2014 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81993
Appears in Collections: 气候变化事实与影响
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作者单位: Institute of Botany, Department of Environmental Sciences, University of Basel, Schönbeinstrasse 6, Basel, Switzerland; Meteotest, Fabrikstrasse 14, Bern, Switzerland; Federal Office for the Environment, Bern, Switzerland
Recommended Citation:
Bühlmann T,, Hiltbrunner E,, Körner C,et al. Induction of indirect N2O and NO emissions by atmospheric nitrogen deposition in (semi-)natural ecosystems in Switzerland[J]. Atmospheric Environment,2015-01-01,103