气候变化领域集成服务门户(CCPortal): Global Nitrous Oxide Emissions From Pasturelands and Rangelands: Magnitude, Spatiotemporal Patterns, and Attribution

CCPortal

DOI	10.1029/2018GB006091
	Global Nitrous Oxide Emissions From Pasturelands and Rangelands: Magnitude, Spatiotemporal Patterns, and Attribution
	Dangal S.R.S.; Tian H.; Xu R.; Chang J.; Canadell J.G.; Ciais P.; Pan S.; Yang J.; Zhang B.
发表日期	2019
ISSN	0886-6236
EISSN	1944-9224
起始页码	200
结束页码	222
卷号	33 期号:2
英文摘要	The application of manure and mineral nitrogen (N) fertilizer, and livestock excreta deposition are the main drivers of nitrous oxide (N 2 O) emissions in agricultural systems. However, the magnitude and spatiotemporal variations of N 2 O emissions due to different management practices (excreta deposition and manure/fertilizer application) from grassland ecosystems remain unclear. In this study, we used the Dynamic Land Ecosystem Model to simulate the spatiotemporal variation in global N 2 O emissions and their attribution to different sources from both intensively managed (pasturelands) and extensively managed (rangelands) grasslands during 1961–2014. Over the study period, pasturelands and rangelands experienced a significant increase in N 2 O emissions from 1.74 Tg N 2 O-N in 1961 to 3.11 Tg N 2 O-N in 2014 (p < 0.05). Globally, pasturelands and rangelands were responsible for 54% (2.2 Tg N 2 O-N) of the total agricultural N 2 O emissions (4.1 Tg N 2 O-N) in 2006. Natural and anthropogenic sources contributed 26% (0.64 Tg N 2 O-N/year) and 74% (1.78 Tg N 2 O-N/year) of the net emissions, respectively. Across different biomes, pasturelands (i.e., C3 and C4) were the single largest contributor to N 2 O fluxes, accounting for 86% of the net global emissions from grasslands. Among different sources, livestock excreta deposition contributed 54% of the net emissions, followed by manure N (13%) and mineral N (7%) application. Regionally, southern Asia contributed 38% of the total emissions, followed by Europe (29%) and North America (16%). Our modeling study demonstrates that livestock excreta deposition and manure/fertilizer application have dramatically altered the N cycle in pasturelands, with a substantial impact on the climate system. ©2019. American Geophysical Union. All Rights Reserved.
英文关键词	climate change; ecosystem modeling; excreta deposition; grasslands; manure/fertilizer application
语种	英语
scopus关键词	agricultural emission; climate change; ecosystem modeling; emission; fertilizer application; global change; grassland; magnitude; management practice; manure; nitrous oxide; pasture; rangeland; spatiotemporal analysis; Asia; Europe; North America
来源期刊	Global Biogeochemical Cycles
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/129745
作者单位	International Center for Climate and Global Change Research and School of Forestry and Wildlife Sciences, Auburn University, Auburn, AL, United States; Woods Hole Research Center, Falmouth, MA, United States; Research Center for Eco-Environmental Sciences, State Key Laboratory of Urban and Regional Ecology, Chinese Academy of Sciences, Beijing, China; Laboratoire des Sciences du Climat et de l'Environnement, Gif sur Yvette, France; Global Carbon Project, CSIRO Oceans and Atmosphere Research, Canberra, ACT, Australia; Now at Department of Natural Resources and Environmental Management, Ball State University, Muncie, IN, United States
推荐引用方式 GB/T 7714	Dangal S.R.S.,Tian H.,Xu R.,et al. Global Nitrous Oxide Emissions From Pasturelands and Rangelands: Magnitude, Spatiotemporal Patterns, and Attribution[J],2019,33(2).
APA	Dangal S.R.S..,Tian H..,Xu R..,Chang J..,Canadell J.G..,...&Zhang B..(2019).Global Nitrous Oxide Emissions From Pasturelands and Rangelands: Magnitude, Spatiotemporal Patterns, and Attribution.Global Biogeochemical Cycles,33(2).
MLA	Dangal S.R.S.,et al."Global Nitrous Oxide Emissions From Pasturelands and Rangelands: Magnitude, Spatiotemporal Patterns, and Attribution".Global Biogeochemical Cycles 33.2(2019).