Response of CH(4) emission of paddy fields to land management practices at a microcosmic cultivation scale in China
文献类型：期刊论文
| 作者 | Shao, JA; Huang, XX; Gao, M; Wei, CF; Xie, DT; Cai, ZC |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 2005 |
| 卷号 | 17期号:4页码:691-698 |
| 关键词 | land use pattern microcosmic cultivation scale fluxes of CH(4) emission paddy field |
| ISSN号 | 1001-0742 |
| 通讯作者 | Wei, CF(weicf@swau.eq.en) |
| 英文摘要 | The terrestrial ecosystem may be either a source or a sink of CH(4) in rice paddies, depending, to a great extent, on the change of ecosystem types and land use patterns. CH(4) emission fluxes from paddy fields under 4 cultivation patterns (conventional plain culture of rice(T1), no-tillage and ridge culture of rice(T2), no-tillage and ridge culture of rice and wheat (T3), and rice-wheat rotation(T4)) were measured with the closed chamber technique in 1996 and 1998 in Chongqing, China. The results showed that differences existed in CH(4) emission from paddy fields under these land management practices. In 1996 and 1998, CH(4) emission was 71.48% and 78.82% (T2), 65.93% and 57.18% (T3), and 61.53% and 34.22% (T4) of that in T1 during the rice growing season. During the non-rice growing season, CH4 emission from rice fields was 76.23% in T2 and 38.69% in T1. The accumulated annual CH(4) emission in T2, T3 and T4 in 1996 decreased by 33.53%, 63.30% and 65.73%, respectively, as compared with that in T1. In 1998, the accumulated annual CH(4) emission in T1, T2, T3 and T4 was 116.96 g/m(2), 68.44 g/m(2), 19.70 g/m(2) and 11.80 g/m(2), respectively. Changes in soil physical and chemical properties, in thermal and moisture conditions in the soil and in rice plant growth induced by different land use patterns were the dominant causes for the difference in CH4 emission observed. The relative contribution of various influencing factors to CH(4) emission from paddy fields differed significantly under different land use patterns. However, the general trend was that chlorophyll content in rice leaves, air temperature and temperature at the 5 cm soil layer play a major role in CH(4) emission from paddy fields and the effects of illumination, relative humidity and water layer depth in the paddy field and CH(4) concentration in the crop canopy were relatively non-significant. Such conservative land use patterns as no-tillage and ridge culture of rice with or without rotation with wheat are thought to be beneficial to reducing CH, emission from paddy fields and are, therefore, recommended as a significant solution to the problems of global (climatic) change. |
| 收录类别 | SCI |
| WOS关键词 | ITALIAN RICE PADDY ; METHANE EMISSION ; NITROGEN-FERTILIZATION ; SOILS ; FLUXES ; CO2 ; N2O |
| WOS研究方向 | Environmental Sciences & Ecology |
| WOS类目 | Environmental Sciences |
| 语种 | 英语 |
| WOS记录号 | WOS:000230436100035 |
| 出版者 | SCIENCE PRESS |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558460 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Wei, CF |
| 作者单位 | 1.SW Agr Univ, Coll Resource & Environm, Chongqing 400716, Peoples R China 2.Chongqing Key Lab Digital Agr, Chongqing 400716, Peoples R China 3.Chinese Acad Sci, Inst Soil Sci, Nanjing 210008, Peoples R China |
| 推荐引用方式 GB/T 7714 | Shao, JA,Huang, XX,Gao, M,et al. Response of CH(4) emission of paddy fields to land management practices at a microcosmic cultivation scale in China[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2005,17(4):691-698. |
| APA | Shao, JA,Huang, XX,Gao, M,Wei, CF,Xie, DT,&Cai, ZC.(2005).Response of CH(4) emission of paddy fields to land management practices at a microcosmic cultivation scale in China.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,17(4),691-698. |
| MLA | Shao, JA,et al."Response of CH(4) emission of paddy fields to land management practices at a microcosmic cultivation scale in China".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 17.4(2005):691-698. |
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来源：南京土壤研究所
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