| 土壤性质和非水稻生长期土壤水分对CH4产生、氧化和排放的影响（英文） |
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| 作者姓名： | 徐华 蔡祖聪 |
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| 作者单位： | 土壤与农业可持续发展国家重点实验室(中国科学院南京土壤研究所), 南京 210008 |
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| 基金项目： | supported by the National Natural Science Foundation of China (40371068) |
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| 摘 要： | 土壤有机质含量是影响CH4产生的最重要土壤性质。土壤CH4氧化能力与包括活性碳、有机碳和全氮含量在内的土壤理化性质之间都不存在显著相关性。非水稻生长期较高的水分含量能促进水稻生长季节CH4的产生、氧化和排放。在影响稻田CH4排放大尺度空间变异性的主要因素中，土壤水分历史可能比土壤性质更为重要。结果表明，非水稻生长期土壤水分对水稻生长期CH4产生、氧化和排放具有极其重要的控制和调节作用。
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| 关 键 词： | 水稻土 甲烷 土壤性质 土壤水分 非水稻生长期 |
| 收稿时间： | 2003-11-20 |
Soil Moisture During the Non-Rice Growing Season and Soil Properties Affect CH_ 4 Production,Oxidation and Emission |
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| Authors: | XU Hua CAI ZuCong |
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| Institution: | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China |
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| Abstract: | Soil organic matter content is the most important property to affect CH 4 production. There is no specific soil property to affect significantly CH4 oxidation. The CH4 production, oxidation and emission potentials are all stimulated by higher soil water content during the previous non rice growing season. Soil water history might be a more important factor than soil property in controlling the spatial variability of CH4 emissions from rice fields on large spatial scale. The results demonstrate the importance of water management between rice crops as a means to regulate CH4 production,oxidation and emission during rice growing season. |
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| Keywords: | paddy soil methane soil properties soil moisture non-rice growing season |
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