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	Drainage and tillage practices in the winter fallow season mitigate ch4 and n2o emissions from a double-rice field in china
	Zhang, Guangbin1; Yu, Haiyang1,2; Fan, Xianfang1,2; Yang, Yuting1,2; Ma, Jing1; Xu, Hua1
刊名	Atmospheric chemistry and physics
	2016-09-23
卷号	16期号:18页码:11853-11866
ISSN号	1680-7316
DOI	10.5194/acp-16-11853-2016
通讯作者	Xu, hua(hxu@issas.ac.cn)
英文摘要	Traditional land management (no tillage, no drainage, ntnd) during the winter fallow season results in substantial ch4 and n2o emissions from double-rice fields in china. a field experiment was conducted to investigate the effects of drainage and tillage during the winter fallow season on ch4 and n2o emissions and to develop mitigation options. the experiment had four treatments: ntnd, ntd (drainage but no tillage), tnd (tillage but no drainage), and td (both drainage and tillage). the study was conducted from 2010 to 2014 in a chinese double-rice field. during winter, total precipitation and mean daily temperature significantly affected ch4 emission. compared to ntnd, drainage and tillage decreased annual ch4 emissions in early-and late-rice seasons by 54 and 33 kg ch4 ha(-1)y r(-1), respectively. drainage and tillage increased n2o emissions in the winter fallow season but reduced it in early-and late-rice seasons, resulting in no annual change in n2o emission. global warming potentials of ch4 and n2o emissions were decreased by 1.49 and 0.92 tco(2) eq. ha(-1) yr(-1), respectively, and were reduced more by combining drainage with tillage, providing a mitigation potential of 1.96 tco(2) eq. ha(-1) yr(-1). a low total c content and high c/n ratio in rice residues showed that tillage in the winter fallow season reduced ch4 and n2o emissions in both early-and late-rice seasons. drainage and tillage significantly decreased the abundance of methanogens in paddy soil, and this may explain the decrease of ch4 emissions. greenhouse gas intensity was significantly decreased by drainage and tillage separately, and the reduction was greater by combining drainage with tillage, resulting in a reduction of 0.17 tco(2) eq. t(-1). the results indicate that drainage combined with tillage during the winter fallow season is an effective strategy for mitigating greenhouse gas releases from double-rice fields.
WOS关键词	GREENHOUSE-GAS EMISSIONS ; NITROUS-OXIDE EMISSIONS ; METHANE EMISSION ; PADDY FIELDS ; CROPPING SYSTEMS ; IRRIGATED RICE ; WATER REGIME ; NITRIC-OXIDE ; SOIL ; DENITRIFICATION
WOS研究方向	Meteorology & Atmospheric Sciences
WOS类目	Meteorology & Atmospheric Sciences
语种	英语
出版者	COPERNICUS GESELLSCHAFT MBH
WOS记录号	WOS:000384547200003
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2375015
专题	中国科学院大学
通讯作者	Xu, Hua
作者单位	1.Chinese Acad Sci, State Key Lab Soil & Sustainable Agr, Inst Soil Sci, Nanjing 210008, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Guangbin,Yu, Haiyang,Fan, Xianfang,et al. Drainage and tillage practices in the winter fallow season mitigate ch4 and n2o emissions from a double-rice field in china[J]. Atmospheric chemistry and physics,2016,16(18):11853-11866.
APA	Zhang, Guangbin,Yu, Haiyang,Fan, Xianfang,Yang, Yuting,Ma, Jing,&Xu, Hua.(2016).Drainage and tillage practices in the winter fallow season mitigate ch4 and n2o emissions from a double-rice field in china.Atmospheric chemistry and physics,16(18),11853-11866.
MLA	Zhang, Guangbin,et al."Drainage and tillage practices in the winter fallow season mitigate ch4 and n2o emissions from a double-rice field in china".Atmospheric chemistry and physics 16.18(2016):11853-11866.

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