The influence of nitrogen fertiliser rate and crop rotation on soil methane flux in rain-fed potato fields in Wuchuan County, China

doi:10.1016/j.scitotenv.2015.08.003

	The influence of nitrogen fertiliser rate and crop rotation on soil methane flux in rain-fed potato fields in Wuchuan County, China
	Wang, Liwei 1,6,7; Pan, Zhihua 1,7; Xu, Hui 2; Wang, Cheng 3; Gao, Lin 4; Zhao, Peiyi 5,7; Dong, Zhiqiang 1,7; Zhang, Jingting 1,7; Cui, Guohui 1,7; Wang, Sen 1,7
刊名	SCIENCE OF THE TOTAL ENVIRONMENT
	2015-12-15
卷号	537 页码:93-99
关键词	Ch4 Exchange Ch4 Oxidation Methanotrophs Nitrogen Fertiliser Crop Patterns Rain-fed Potato
ISSN号	0048-9697
DOI	10.1016/j.scitotenv.2015.08.003
英文摘要	As one of the important greenhouse gases, the characteristics and principles of methane exchange characteristics in cultivated lands have become hot topics in current climate change research. This study examines the influences of nitrogen fertilisation, temperature and soil water content on methane exchange characteristic and methane exchange functional gene-pmoA gene abundance based on experimental observations of methane exchange fluxes using the static chamber-gas chromatographic method and measurements of methanotroph gene copy numbers in three growing periods by real-time PCR in rain-fed potato fields. The results indicate that the rain-fed potato fields were a CH4 sink with an average annual methane absorption (negative emission) of 940.8 +/- 103.2 g CH4-C/ha/year. The cumulative methane absorption first exhibited flat and subsequently increasing trend with the increase of nitrogen fertilisation from 0 similar to 135 kg N.ha(-1). Methane cumulative absorption significantly increased with the increase of temperature when temperatures were below 19.6 degrees C. Methane oxidation capacity (methanotroph pmoA gene copy numbers) showed an increasing and subsequently decreasing trend with the increase of soil moisture. Crop rotation was observed to increase the methane absorption in rain-fed potato fields and nearly one time higher than that under continuous cropping. A mechanism concept model of the methane exchange in rain-fed potato fields was advanced in this paper. (C) 2015 Elsevier B.V. All rights reserved.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	ELSEVIER SCIENCE BV
WOS记录号	WOS:000361191100010
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122203]
专题	中国科学院沈阳应用生态研究所
通讯作者	Pan, Zhihua
作者单位	1.China Agr Univ, Coll Resources & Environm Sci, Beijing 100193, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, Shenyang 110016, Peoples R China 3.China Agr Univ, Coll Agr & Biotechnol, Beijing 100193, Peoples R China 4.Anhui Agr Univ, Sch Resources & Environm, Hefei 230036, Peoples R China 5.Inner Mongolia Acad Agr & Anim Husb Sci, Inst Resources Environm & Detect Technol, Hohhot 010031, Peoples R China 6.Shenyang Agr Univ, Coll Agron, Shenyang 110866, Peoples R China 7.Minist Agr, Wuchuan Sci Observing & Expt Stn Agroenvironm, Wuchuan 011700, Peoples R China
推荐引用方式 GB/T 7714	Wang, Liwei,Pan, Zhihua,Xu, Hui,et al. The influence of nitrogen fertiliser rate and crop rotation on soil methane flux in rain-fed potato fields in Wuchuan County, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2015,537:93-99.
APA	Wang, Liwei.,Pan, Zhihua.,Xu, Hui.,Wang, Cheng.,Gao, Lin.,...&Zhao, Hui.(2015).The influence of nitrogen fertiliser rate and crop rotation on soil methane flux in rain-fed potato fields in Wuchuan County, China.SCIENCE OF THE TOTAL ENVIRONMENT,537,93-99.
MLA	Wang, Liwei,et al."The influence of nitrogen fertiliser rate and crop rotation on soil methane flux in rain-fed potato fields in Wuchuan County, China".SCIENCE OF THE TOTAL ENVIRONMENT 537(2015):93-99.