气候变化领域集成服务门户(CCPortal): Modelling terrestrial nitrous oxide emissions and implications for climate feedback

CCPortal

DOI	10.1111/j.1469-8137.2012.04269.x
	Modelling terrestrial nitrous oxide emissions and implications for climate feedback
	Xu-Ri; Prentice, I. Colin; Spahni, Renato; Niu, Hai Shan
通讯作者	Xu-Ri (通讯作者)
发表日期	2012
ISSN	0028-646X
EISSN	1469-8137
起始页码	472
结束页码	488
卷号	196 期号:2
英文摘要	Ecosystem nitrous oxide (N2O) emissions respond to changes in climate and CO2 concentration as well as anthropogenic nitrogen (N) enhancements. Here, we aimed to quantify the responses of natural ecosystem N2O emissions to multiple environmental drivers using a process-based global vegetation model (DyN-LPJ). We checked that modelled annual N2O emissions from nonagricultural ecosystems could reproduce field measurements worldwide, and experimentally observed responses to step changes in environmental factors. We then simulated global N2O emissions throughout the 20th century and analysed the effects of environmental changes. The model reproduced well the global pattern of N2O emissions and the observed responses of N cycle components to changes in environmental factors. Simulated 20th century global decadal-average soil emissions were c. 8.29.5 Tg N yr-1 (or 8.310.3 Tg N yr-1 with N deposition). Warming and N deposition contributed 0.85 +/- 0.41 and 0.80 +/- 0.14 Tg N yr-1, respectively, to an overall upward trend. Rising CO2 also contributed, in part, through a positive interaction with warming. The modelled temperature dependence of N2O emission (c. 1 Tg N yr-1 K-1) implies a positive climate feedback which, over the lifetime of N2O (114 yr), could become as important as the climatecarbon cycle feedback caused by soil CO2 release.
关键词	COLORADO SHORTGRASS STEPPE SOIL-ATMOSPHERE EXCHANGE TEMPERATE FOREST SOILS ELEVATED CO2 CARBON-DIOXIDE N2O EMISSIONS TROPICAL FOREST METHANE FLUXES NITRIC-OXIDE GRASSLAND-ECOSYSTEMS
英文关键词	climate feedback; CO 2; dynamic global vegetation model; greenhouse gas; nitrogen cycle; nitrous oxide (N2O)
语种	英语
WOS研究方向	Plant Sciences
WOS类目	Plant Sciences
WOS记录号	WOS:000308882200018
来源期刊	NEW PHYTOLOGIST
来源机构	中国科学院青藏高原研究所
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/258071
推荐引用方式 GB/T 7714	Xu-Ri,Prentice, I. Colin,Spahni, Renato,et al. Modelling terrestrial nitrous oxide emissions and implications for climate feedback[J]. 中国科学院青藏高原研究所,2012,196(2).
APA	Xu-Ri,Prentice, I. Colin,Spahni, Renato,&Niu, Hai Shan.(2012).Modelling terrestrial nitrous oxide emissions and implications for climate feedback.NEW PHYTOLOGIST,196(2).
MLA	Xu-Ri,et al."Modelling terrestrial nitrous oxide emissions and implications for climate feedback".NEW PHYTOLOGIST 196.2(2012).