Crop residue incorporation and nitrogen fertilizer effects on greenhouse gas emissions from a subtropical rice system in Southwest China
文献类型：期刊论文
| 作者 | Wang Xiao-guo1 ; Luo Yong2
|
| 刊名 | JOURNAL OF MOUNTAIN SCIENCE
 |
| 出版日期 | 2018 |
| 卷号 | 15期号:9页码:1972-1986 |
| ISSN号 | 1672-6316 |
| 关键词 | Methane Nitrous oxide Crop residue Soil carbon sequestration Global warming potential Paddy field |
| DOI | 10.1007/s11629-017-4810-4 |
| 通讯作者 | Wang Xiao-guo |
| 产权排序 | 1 |
| 英文摘要 | Crop residue incorporation has been widely accepted as a way to increase soil carbon (C) sequestration and sustain soil fertility in agroecosystems. However, effect of crop residue incorporation on greenhouse gas (GHG) emissions in rice paddy soils remains uncertain. A field experiment was conducted to quantify emissions of CH4 and N2O and soil heterotrophic respiration (R-H) from a paddy rice field under five different crop residue treatments (i.e., 150 kg N ha(-1) of synthetic N fertilizer application only [NF], 150 kg N ha(-1) of synthetic N fertilizer plus 5.3 Mg ha(-1) wheat residue [NF-WR1], 150 kg N ha(-1) of synthetic N fertilizer plus 10.6 Mg ha(-1) wheat residue [NF-WR2], 75 kg N ha(-1) of synthetic N fertilizer plus 10.6 Mg ha(-1) wheat residue [50%NF-WR2] and 150 kg N ha(-1) of synthetic N fertilizer plus 21.2 Mg ha(-1) wheat residue [NF-WR3]) in southwest China. Our results showed that crop residue incorporation treatments (NF-WR1, NF-WR2, 50%NF-WR2, NF-WR3) significantly increased CH4 emissions by at least 60%, but N2O emissions were not enhanced and even suppressed by 25% in the NF-WR3 treatment as compared to the NF treatment. Soil R-H emissions were comparable among experimental treatments, while crop residue incorporation treatments significantly increased soil carbon sequestrations relative to the NF treatment. Overall, CH4 emissions dominated total global warming potentials (GWP) across all experimental treatments. The average yieldscaled GWPs for the NF and NF-WR1 treatments were significantly lower than for the NF-WR2, 50%NFWR2 and NF-WR3 treatments. Given the comparable yield-scaled GWPs between the NF and NF-WR1 treatments, the NF-WR1 treatment could gain net carbon sequestration as compared with the NF treatment with net soil carbon loss. Our findings suggest that the NF-WR1 treatment should be an effective option to sustain rice production while mitigating GHG emissions from the rice field in China. |
| 电子版国际标准刊号 | 1993-0321 |
| 语种 | 英语 |
| 源URL | [http://ir.imde.ac.cn/handle/131551/23878]  |
| 专题 | 成都山地灾害与环境研究所_山地表生过程与生态调控重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mt Hazards & Environm, Key Lab Mt Surface Proc & Ecol Regulat, Chengdu 610041, Sichuan, Peoples R China; 2.Chengdu Univ Technol, Key Lab Geol Spatial Informat Technol, Minist Land & Resource, Chengdu 610059, Sichuan, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wang Xiao-guo,Luo Yong. Crop residue incorporation and nitrogen fertilizer effects on greenhouse gas emissions from a subtropical rice system in Southwest China[J]. JOURNAL OF MOUNTAIN SCIENCE,2018,15(9):1972-1986. |
| APA | Wang Xiao-guo,&Luo Yong.(2018).Crop residue incorporation and nitrogen fertilizer effects on greenhouse gas emissions from a subtropical rice system in Southwest China.JOURNAL OF MOUNTAIN SCIENCE,15(9),1972-1986. |
| MLA | Wang Xiao-guo,et al."Crop residue incorporation and nitrogen fertilizer effects on greenhouse gas emissions from a subtropical rice system in Southwest China".JOURNAL OF MOUNTAIN SCIENCE 15.9(2018):1972-1986. |
入库方式： OAI收割
来源：成都山地灾害与环境研究所
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