Conversion of cropland to grassland and forest mitigates global warming potential in northeast china
文献类型：期刊论文
| 作者 | Miao, Shujie1; Qiao, Yunfa1; Zhang, Futao2 |
| 刊名 | Polish journal of environmental studies
 |
| 出版日期 | 2015 |
| 卷号 | 24期号:3页码:1195-1203 |
| 关键词 | Land use change Co2 and n2o emissions Change in soil carbon stock (scs) Global warming potential (gwp) |
| ISSN号 | 1230-1485 |
| 通讯作者 | Miao, shujie() |
| 英文摘要 | In converting cropland to grassland and forest, more carbon is sequestered in grassland soil and forest biomass, but the mitigation of global warming potential (gwp) is not clear. in this study, we use the lon-gterm conversion from cropland to grassland (28 y) and forest (14 y) to comprehensively assess the impact on gwp of soil carbon (c), nitrogen (n), co2 and n2o emissions. the results showed that compared to the original cropland, conversion to grassland increased soil c content by 51.1%, soil n content by 28.4%, soil c stock (scs) by four times, co2 emission by 17%, and n2o emission by 40%; soil n stock (sns) decreased by half. the corresponding values after afforestation were 7.2%, 5.2%, three times, 3%, -80%, and half, respectively. overall gwp in the cropland system was calculated using the fuel used for farming production, the change in soil c, and n2o emissions. due to large c sequestration, the gwp of conversion to grassland (-1667 kg co2-c equivalent ha(-1).y(-1)) and forest (-324 kg co2-c equivalent ha(-1).y(-1)) were significantly lower than the cropland system (755 kg co2-c equivalent ha(-1).y(-1)). the relationship between gwp and greenhouse gas, between gwp and the change of total c and n, suggest that in rain-fed agricultural systems in northeast china, the conversion from cropland to grassland and forest can mitigate gwp through changing co2 and n2o emissions. |
| WOS关键词 | SOIL ORGANIC-CARBON ; LAND-USE CHANGE ; GREENHOUSE-GAS MITIGATION ; NEW-ZEALAND ; AGRICULTURAL SOILS ; SEQUESTRATION ; AFFORESTATION ; DYNAMICS ; METHANE ; VEGETATION |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000355575900029 |
| 出版者 | HARD |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2376658 |
| 专题 | 中国科学院大学 |
| 通讯作者 | Miao, Shujie |
| 作者单位 | 1.Nanjing Univ Informat Sci & Technol, Nanjing 210044, Jiangsu, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100000, Peoples R China |
| 推荐引用方式 GB/T 7714 | Miao, Shujie,Qiao, Yunfa,Zhang, Futao. Conversion of cropland to grassland and forest mitigates global warming potential in northeast china[J]. Polish journal of environmental studies,2015,24(3):1195-1203. |
| APA | Miao, Shujie,Qiao, Yunfa,&Zhang, Futao.(2015).Conversion of cropland to grassland and forest mitigates global warming potential in northeast china.Polish journal of environmental studies,24(3),1195-1203. |
| MLA | Miao, Shujie,et al."Conversion of cropland to grassland and forest mitigates global warming potential in northeast china".Polish journal of environmental studies 24.3(2015):1195-1203. |
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来源：中国科学院大学
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