Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China
	Pang, Junzhu; Wang, Xiaoke; Mu, Yujing; Ouyang, Zhiyun; Liu, Wenzhao
刊名	BIOLOGY AND FERTILITY OF SOILS
	2009-11
卷号	46 期号:1 页码:37-44
关键词	Nitrous oxide emission Apple orchard soil Nitrogen fertilizer Emission factor China Loess Plateau
中文摘要	Nitrous oxide (N(2)O) fluxes from an apple orchard soil in the semiarid Loess Plateau of China were measured using static chambers from September 2007 to September 2008. In this study, three sites were selected at distance of 2.5 m (D 2.5), 1.5 m (D 1.5), and 0.5 m (D 0.5) from the apple tree row. Nitrous oxide fluxes followed seasonal pattern, with high N(2)O emission rates occurring in the hot-humid summer and low rates in the cold-dry winter. Pulses of N(2)O emissions occurred after nitrogen fertilizer application, summer rainfall events, and during freeze-thaw cycles. Annual average N(2)O emission rates were the highest at D 0.5 site (48.2 +/- A 39.9 A mu g N(2)O m(-2) h(-1)), the lowest at D 2.5 site (31.9 +/- A 18.2 A mu g N(2)O m(-2) h(-1)), and intermediate at D1.5 site (36.8 +/- A 32.2 A mu g N(2)O m(-2) h(-1)), suggesting that N(2)O emissions from the apple orchard soil increased when the chamber location was closer to the apple tree row. This may be due to the fertilization close to roots in hot and humid season. Over one third (37.1%) of the annual N(2)O emission occurred in the summer. Annual N(2)O emissions from the apple orchard soil averaged to 3.22 kg N(2)O ha(-1) year(-1). Annual emission factor of the apple orchard from the applied fertilizer (uncorrected for background emission) was 0.658%. This value was nearly a half (53%) of the default value provided by the Intergovernmental Panel on Climate Change for the application of synthetic fertilizers to cropland (1.25%). Therefore, the amount of N(2)O emissions from the semiarid apple orchard soil could be largely overestimated if no regional-specific factor is used.
WOS记录号	WOS:000271527400004
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/21398]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Pang, Junzhu,Wang, Xiaoke,Mu, Yujing,et al. Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China[J]. BIOLOGY AND FERTILITY OF SOILS,2009,46(1):37-44.
APA	Pang, Junzhu,Wang, Xiaoke,Mu, Yujing,Ouyang, Zhiyun,&Liu, Wenzhao.(2009).Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China.BIOLOGY AND FERTILITY OF SOILS,46(1),37-44.
MLA	Pang, Junzhu,et al."Nitrous oxide emissions from an apple orchard soil in the semiarid Loess Plateau of China".BIOLOGY AND FERTILITY OF SOILS 46.1(2009):37-44.