DOI: 10.1016/j.atmosenv.2015.06.008
Scopus记录号: 2-s2.0-84940043950
论文题名: Biosphere-atmosphere exchange of methane in India as influenced by multiple environmental changes during 1901-2010
作者: Banger K ; , Tian H ; , Zhang B ; , Lu C ; , Ren W ; , Tao B
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2015
卷: 119 起始页码: 192
结束页码: 200
语种: 英语
英文关键词: Carbon dioxide
; Climate
; India
; Land cover
; Methane
Scopus关键词: Atmospheric chemistry
; Biospherics
; Carbon dioxide
; Climate models
; Ecology
; Ecosystems
; Forestry
; Land use
; Methane
; Wetlands
; Atmospheric carbon dioxide
; Atmospheric nitrogen deposition
; Climate
; Dynamic land ecosystem models (DLEM)
; India
; Land cover
; Natural environmental factors
; Plant biomass production
; Climate change
; carbon dioxide
; methane
; nitrogen
; ozone
; agricultural emission
; annual variation
; atmosphere-biosphere interaction
; atmospheric gas
; atmospheric pollution
; biogeochemistry
; carbon dioxide
; concentration (composition)
; ecosystem modeling
; environmental change
; environmental impact assessment
; extreme event
; land cover
; land use change
; methane
; paddy field
; phytomass
; wetland
; air pollution
; Article
; atmosphere
; biomass production
; biosphere
; climate
; climate change
; concentration (parameters)
; cropping system
; drought
; ecosystem
; environmental change
; gas exchange
; gas transport
; high temperature
; India
; land use
; nitrogen deposition
; nonhuman
; plant growth
; pollution
; priority journal
; rice
; simulation
; troposphere
; wetland
; India
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: It is highly uncertain on how human and natural environmental factors have altered methane (CH4) emissions from terrestrial ecosystems in India. Using a process-based, Dynamic Land Ecosystem Model (DLEM) driven by climate, land cover and land use change (LCLUC), atmospheric nitrogen deposition (NDEP), atmospheric carbon dioxide (CO2) concentration, and tropospheric ozone (O3) pollution, we examined CH4 flux from terrestrial in India during 1901-2010. The DLEM simulations have shown that total CH4 flux over the country ranged from 2.9 Tg C year-1 to 6.5 Tg C year-1 with significant inter-annual variations driven by climate during 1901-2010. Contemporary CH4 emissions have primarily occurred from rice fields (3.9 ± 0.9 Tg C year-1) while wetlands contributed to 2.1 ± 0.6 Tg C year-1 in the 2000s. During 1901-2010, total CH4 emission from the terrestrial biosphere has increased by ~2.1 Tg C year-1. LCLUC has increased CH4 emissions by 2.3 Tg C year-1 primarily due to increase in the rice-based cropping systems as well as irrigation expansion during the study period. Elevated CO2 concentration stimulated plant biomass production in both rice fields and wetlands that increased CH4 emissions by 0.7 Tg C year-1. On the contrary, climate change decreased net CH4 emissions by ~1.2 Tg C year-1 due to negative effects of extreme high temperature as well as occurrences of extreme drought events on plant growth. Our study suggests that LCLUC and elevated CO2 concentration have significantly increased CH4 emissions from terrestrial ecosystems in India. © 2015 Elsevier Ltd. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/81532
Appears in Collections: 气候变化事实与影响
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作者单位: International Center for Climate and Global Change Research, Auburn University, Auburn, AL, United States
Recommended Citation:
Banger K,, Tian H,, Zhang B,et al. Biosphere-atmosphere exchange of methane in India as influenced by multiple environmental changes during 1901-2010[J]. Atmospheric Environment,2015-01-01,119