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A three-year experiment of annual methane and nitrous oxide emissions from the subtropical permanently flooded rice paddy fields of China: Emission factor, temperature sensitivity and fertilizer nitrogen effect
Zhou, Minghua; Wang, Xiaoguo; Wang, Yanqiang; Zhu, Bo
2018
Source PublicationAGRICULTURAL AND FOREST METEOROLOGY
ISSN0168-1923
EISSN1873-2240
Volume250Pages:299-307
SubtypeArticle
Contribution Rank1
AbstractAnnual CH4 and N2O emissions from these rice production systems that accounts for over 10% of national rice cultivation of China are rarely reported. To improve understanding of greenhouse gas emissions from croplands in China, we measured methane (CH4) and nitrous oxide (N2O) emissions from the subtropical permanently flooded rice paddy fields through a 3-year field experiment that utilized three nitrogen fertilizer application rates (0 [N0], 150 [N150] and 250 [N250] kg N ha(-1)) in southwestern China. Results showed that seasonal patterns of CH4 and N2O emissions were consistent with temporal weather patterns. The average annual cumulative CH4 fluxes were in the range of 794 to 883 kg CH4-C ha(-1) yr(-1) and N2O fluxes ranged from 1.61 to 3.10 kg N2O-N ha(-1) yr(-1) across the experimental treatments. The Q(10) values (soil temperature sensitivity coefficient) of CH4 and N2O emissions were 2.72-3.67 and 3.32-6.05, respectively, for the three treatments. Inconsistent with our hypothesis, the nitrogen fertilizer application did not increase seasonal and annual N2O emissions over three years, compared to the control. Thus, the annual direct N2O emission factors (EFd) averaged 0.07%, which was substantially lower than the IPCC default value of 0.30% for rice paddy fields. Nitrogen fertilizer application significantly decreased the mean seasonal global warming potential (GWP) and yield-scaled GWP for the rice season, whereas this was not true on an annual basis if fallow season was also considered. Since CH4 emission was the major contributor to total GWP, it is necessary to propose mitigation options, which could include draining the floodwater layer and introducing upland crops during the fallow season. However, it will be challenging to reduce N2O emissions and retain soil organic carbon if the floodwater layer is drained and upland crops are introduced during the fallow season.
KeywordNitrous oxide Methane Temperature sensitivity Emission factor Permanently flooded rice
DOI10.1016/j.agrformet.2017.12.265
Indexed BySCI
WOS KeywordGREENHOUSE-GAS INTENSITY ; N2O EMISSIONS ; WATER MANAGEMENT ; FALLOW SEASON ; AGRONOMIC ASSESSMENT ; AGRICULTURAL SOILS ; ROTATION SYSTEM ; WHEAT ROTATION ; FLUXES ; CROP
Language英语
Quartile1区
Funding ProjectCAS Pioneer Hundred Talents Program ; National Natural Science Foundation of China[41573079] ; National Natural Science Foundation of China[41330744] ; National Natural Science Foundation of China[U1612441] ; National Natural Science Foundation of China[41571130074] ; Major Science and Technology Program for Water Pollution Control and Treatment[2017ZX07101-001] ; West Light Foundation of the Chinese Academy of Sciences
TOP
WOS Research AreaAgriculture ; Forestry ; Meteorology & Atmospheric Sciences
WOS SubjectAgronomy ; Forestry ; Meteorology & Atmospheric Sciences
WOS IDWOS:000427338400025
Funding OrganizationCAS Pioneer Hundred Talents Program ; National Natural Science Foundation of China ; Major Science and Technology Program for Water Pollution Control and Treatment ; West Light Foundation of the Chinese Academy of Sciences
PublisherELSEVIER SCIENCE BV
Citation statistics
Cited Times:16[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imde.ac.cn/handle/131551/22531
Collection山地表生过程与生态调控重点实验室
Corresponding AuthorZhou, Minghua; Zhu, Bo
AffiliationChinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China
First Author Affilication中国科学院水利部成都山地灾害与环境研究所
Corresponding Author Affilication中国科学院水利部成都山地灾害与环境研究所
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GB/T 7714
Zhou, Minghua,Wang, Xiaoguo,Wang, Yanqiang,et al. A three-year experiment of annual methane and nitrous oxide emissions from the subtropical permanently flooded rice paddy fields of China: Emission factor, temperature sensitivity and fertilizer nitrogen effect[J]. AGRICULTURAL AND FOREST METEOROLOGY,2018,250:299-307.
APA Zhou, Minghua,Wang, Xiaoguo,Wang, Yanqiang,&Zhu, Bo.(2018).A three-year experiment of annual methane and nitrous oxide emissions from the subtropical permanently flooded rice paddy fields of China: Emission factor, temperature sensitivity and fertilizer nitrogen effect.AGRICULTURAL AND FOREST METEOROLOGY,250,299-307.
MLA Zhou, Minghua,et al."A three-year experiment of annual methane and nitrous oxide emissions from the subtropical permanently flooded rice paddy fields of China: Emission factor, temperature sensitivity and fertilizer nitrogen effect".AGRICULTURAL AND FOREST METEOROLOGY 250(2018):299-307.
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