Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-10419-2018 |
Controlling variables and emission factors of methane from global rice fields | |
Wang, Jinyang1,2; Akiyama, Hiroko3; Yagi, Kazuyuki3; Yan, Xiaoyuan1 | |
2018-07-23 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:14页码:10419-10431 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Wales; Japan |
英文摘要 | Rice cultivation has long been known as one of the dominant anthropogenic contributors to methane (CH4) emissions, yet there is still uncertainty when estimating its emissions at the global or regional scale. An increasing number of rice field measurements have been conducted globally, which allow us to reassess the major variables controlling CH4 emissions and develop region- and countryspecific emission factors (EFs). The results of our statistical analysis show that the CH4 flux from rice fields was closely related to organic amendments, the water regime during and before the rice-growing season, soil properties and agroecological conditions. The average CH4 fluxes from fields with single and multiple drainage were 71% and 55% that of continuously flooded rice fields. The CH4 flux from fields that were flooded in the previous season were 2.4 and 2.7 times that of fields previously drained for a short and long season, respectively. Rice straw applied at 6 t ha(-1) in the preseason can decrease CH4 emissions by half when compared to that applied shortly before rice transplanting. The global default EF was estimated to be 1.19 kgCH(4) ha(-1) day(-)1 with a 95% confidence interval of 0.80 to 1.76 kgCH(4) ha(-)1 day(-1) for continuously flooded rice fields without organic amendment and with a preseason water status of short drainage. The lower EFs were found in countries from South Asia (0.85 kgCH(4) ha(-1) day(-1)) and North America (0.65 kgCH(4) ha(-1) day(-1)) relative to other regions, indicative of geographical variations at sub-regional and country levels. In conclusion, these findings can provide a sound basis for developing national inventories and mitigation strategies of CH4 emission from rice fields. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000439427800003 |
WOS关键词 | GREENHOUSE-GAS EMISSIONS ; NITROUS-OXIDE EMISSIONS ; WATER REGIME ; ATMOSPHERIC METHANE ; PADDY ; FERTILIZER ; CHINA ; MANAGEMENT ; YIELDS ; SOILS |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/29446 |
专题 | 地球科学 |
作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Jiangsu, Peoples R China; 2.Bangor Univ, Sch Environm Nat Resources & Geog, Environm Ctr Wales, Bangor LL57 2UW, Gwynedd, Wales; 3.Natl Agr & Food Res Org, Inst Agroenvironm Sci, 3-1-3 Kannondai, Tsukuba, Ibaraki 3058604, Japan |
推荐引用方式 GB/T 7714 | Wang, Jinyang,Akiyama, Hiroko,Yagi, Kazuyuki,et al. Controlling variables and emission factors of methane from global rice fields[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(14):10419-10431. |
APA | Wang, Jinyang,Akiyama, Hiroko,Yagi, Kazuyuki,&Yan, Xiaoyuan.(2018).Controlling variables and emission factors of methane from global rice fields.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(14),10419-10431. |
MLA | Wang, Jinyang,et al."Controlling variables and emission factors of methane from global rice fields".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.14(2018):10419-10431. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论