| NUMERICAL SIMULATION OF METHANE EMISSIONS FROM RICE PADDY FIELDS IN THE YANGTZE DELTA OF CHINA |
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| 引用本文： | 刘建栋,周秀骥,张宇. NUMERICAL SIMULATION OF METHANE EMISSIONS FROM RICE PADDY FIELDS IN THE YANGTZE DELTA OF CHINA[J]. , 2001, 0(1) |
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| 作者姓名： | 刘建栋 周秀骥 张宇 |
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| 作者单位： | Chinese Academy of Meteorological Sciences Beijing 100081，Chinese Academy of Meteorological Sciences，Beijing 100081，Chinese Academy of Meteorological Sciences，Beijing 100081 |
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| 基金项目： | This study is supported by the National Natural Science Foundation of China under the Program No.49899270. |
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| 摘 要： | A numerical simulation model is presented in this paper,which comprises the processes ofcrop growth,soil organic carbon decomposition,and methane emissions in agroecosystems.Simulation results show that the model can simulate the main process of methane emissions well,and the correlation coefficient between the simulated values and observed data is 0.79 with 239samples,which passed a significance test of 0.01.The average error of methane emissionsimulation in whole growth period is about 15%.Numerical analysis of the model indicates that theaverage temperature during rice growth period has much impacts on methane emissions,and thebasic trend of interannual methane emissions is similar to that of average temperature.The amountof methane emissions reduces about 34.93%,when the fertilizer is used instead of manure in singlerice paddy.
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NUMERICAL SIMULATION OF METHANE EMISSIONS FROM RICE PADDY FIELDS IN THE YANGTZE DELTA OF CHINA |
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| LIU Jiandong HOU Xiuji ZHANG Yu Chinese Academy of Meteorological Sciences,Beijing. NUMERICAL SIMULATION OF METHANE EMISSIONS FROM RICE PADDY FIELDS IN THE YANGTZE DELTA OF CHINA[J]. Acta Meteorologica Sinica, 2001, 0(1) |
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| Authors: | LIU Jiandong HOU Xiuji ZHANG Yu Chinese Academy of Meteorological Sciences Beijing |
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| Affiliation: | LIU Jiandong HOU Xiuji ZHANG Yu Chinese Academy of Meteorological Sciences,Beijing 100081 |
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| Abstract: | A numerical simulation model is presented in this paper,which comprises the processes of crop growth,soil organic carbon decomposition,and methane emissions in agroecosystems. Simulation results show that the model can simulate the main process of methane emissions well, and the correlation coefficient between the simulated values and observed data is 0.79 with 239 samples,which passed a significance test of 0.01.The average error of methane emission simulation in whole growth period is about 15%.Numerical analysis of the model indicates that the average temperature during rice growth period has much impacts on methane emissions,and the basic trend of interannual methane emissions is similar to that of average temperature.The amount of methane emissions reduces about 34.93%,when the fertilizer is used instead of manure in single rice paddy. |
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| Keywords: | numerical simulation methane emissions rice paddy fields the Yangtze Delta of China |
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