Impacts of Rice Cropping System Changes on Paddy Methane Emissions in Southern China
文献类型：期刊论文
| 作者 | Jiang, Min; Li, Xiubin3; Xin, Liangjie3; Tan, Minghong3; Zhang, Wen1 |
| 刊名 | LAND
 |
| 出版日期 | 2023-02-01 |
| 卷号 | 12期号:2页码:270 |
| 关键词 | double to single rice cropping system methane emissions model estimates southern China |
| DOI | 10.3390/land12020270 |
| 文献子类 | Article |
| 英文摘要 | Rice paddies are one of the main sources of anthropogenic terrestrial CH4. In recent decades, the substitution of single-cropping rice (SCR) for double-crop rice (DCR) has become more common in southern China. However, the concomitant impacts on CH4 emissions have not been quantified. We incorporated high-resolution rice cropping system maps into the CH4MOD model to calculate changes in CH4 emissions in southern China due to DCR conversion to SCR over the period 1990 to 2015. We find that a total planting area of 253.64 x10(4) ha was converted from DCR to SCR. This conversion resulted in a 451.94 Gg reduction in CH4 emissions, accounting for 8.4% of CH4 emissions from paddies in China in 2015. The largest reduction was in the Middle-Lower Yangtze plain with high labor pressures. As urbanization continues, we project that the total CH4 emissions have the potential to decrease by between 17.1% and 9.2% under DCR conversion to SCR in southern China in the extreme and most likely scenarios, respectively. As farmers voluntarily move to SCR in response to labor scarcity, making full use of the land-use change trend of DCR to SCR may be an opportunity to reduce agricultural methane emissions, which is important for achieving Sustainable Development Goals (SDGs) and should be given more attention. |
| WOS关键词 | GREENHOUSE-GAS EMISSIONS ; NITROUS-OXIDE EMISSIONS ; LAND-USE ; MITIGATION OPTIONS ; CULTIVATED LAND ; MANAGEMENT ; FIELDS ; MODEL ; UNCERTAINTIES ; ADAPTATION |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS记录号 | WOS:000941424700001 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/200760]  |
| 专题 | 陆地表层格局与模拟院重点实验室_外文论文 |
| 作者单位 | 1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Land Surface Pattern & Simulat, Beijing 100101, Peoples R China 2.Chinese Acad Sci, Inst Atmospher Phys, State Key Lab Atmospher Boundary Layer Phys & Atmo, Beijing 100029, Peoples R China 3.Chinese Acad Sci, Aerosp Informat Res Inst, State Key Lab Remote Sensing Sci, Beijing 100101, Peoples R China |
| 推荐引用方式 GB/T 7714 | Jiang, Min,Li, Xiubin,Xin, Liangjie,et al. Impacts of Rice Cropping System Changes on Paddy Methane Emissions in Southern China[J]. LAND,2023,12(2):270. |
| APA | Jiang, Min,Li, Xiubin,Xin, Liangjie,Tan, Minghong,&Zhang, Wen.(2023).Impacts of Rice Cropping System Changes on Paddy Methane Emissions in Southern China.LAND,12(2),270. |
| MLA | Jiang, Min,et al."Impacts of Rice Cropping System Changes on Paddy Methane Emissions in Southern China".LAND 12.2(2023):270. |
入库方式： OAI收割
来源：地理科学与资源研究所
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