气候变化领域集成服务门户(CCPortal): Greenhouse gases in intensive agriculture: Contributions of individual gases to the radiative forcing of the atmosphere

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DOI	10.1126/science.289.5486.1922
	Greenhouse gases in intensive agriculture: Contributions of individual gases to the radiative forcing of the atmosphere
	Robertson G.P.; Paul E.A.; Harwood R.R.
发表日期	2000
ISSN	0036-8075
起始页码	1922
结束页码	1925
卷号	289 期号:5486
英文摘要	Agriculture plays a major role in the global fluxes of the greenhouse gases carbon dioxide, nitrous oxide, and methane. From 1991 to 1999, we measured gas fluxes and other sources of global warming potential (GWP) in cropped and nearby unmanaged ecosystems. Net GWP (grams of carbon dioxide equivalents per square meter per year) ranged from 110 in our conventional tillage systems to -211 in early successional communities. None of the annual cropping systems provided net mitigation, although soil carbon accumulation in no-till systems came closest to mitigating all other sources of GWP. In all but one ecosystem, nitrous oxide production was the single greatest source of GWP. In the late successional system, GWP was neutral because of significant methane oxidation. These results suggest additional Opportunities for lessening the GWP of agronomic systems.
英文关键词	carbon dioxide; methane; nitrous oxide; agricultural practice; carbon dioxide; global warming; greenhouse gas; methane; nitrous oxide; radiative forcing; agriculture; article; atmosphere; carbon dioxide measurement; crop; ecosystem; greenhouse effect; oxidation; priority journal; radiation
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245245
作者单位	Department of Crop and Soil Sciences, W. K. Kellogg Biological Station, Michigan State University, Hickory Corners, MI 49060, United States
推荐引用方式 GB/T 7714	Robertson G.P.,Paul E.A.,Harwood R.R.. Greenhouse gases in intensive agriculture: Contributions of individual gases to the radiative forcing of the atmosphere[J],2000,289(5486).
APA	Robertson G.P.,Paul E.A.,&Harwood R.R..(2000).Greenhouse gases in intensive agriculture: Contributions of individual gases to the radiative forcing of the atmosphere.Science,289(5486).
MLA	Robertson G.P.,et al."Greenhouse gases in intensive agriculture: Contributions of individual gases to the radiative forcing of the atmosphere".Science 289.5486(2000).