| Factors Affecting Methane Emission from Rice Paddies |
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| 引用本文： | 于心科 王卫东 等. Factors Affecting Methane Emission from Rice Paddies[J]. 中国地球化学学报, 1995, 14(1): 60-67. DOI: 10.1007/BF02840384 |
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| 作者姓名： | 于心科 王卫东 等 |
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| 作者单位： | [1]StateKeyLaboratoryofGasGeochemistry,InstituteofGeology,ChineseAcademyofSciences,Lanzhou730000 [2]Changsh,InstituteofGeology,ChineseAcademyofSciences,Lanzhou730000 |
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| 摘 要： | A comparative study of rice paddies and the uncovered water field in Taoyuan(Hunan) showed that methane emission from rice-vegetated paddy fields in 1993 was different from that in 1992(I,e,lower in rates and irregular in pattern).Climate has obvious influence on methane emission .And ebullition made a considerable contribution to the total flux of methane emission from rice paddies (45%).This implies that the intensification of paddy cultivation of rice might not be,as was proposed,the main con-tributor to the observed gradual increasing of atmospheric methane.24-hour automatic measurements of atmospheric temperature,air temperature and methane concentration in the static sampling boxes revealed that temperature,in addition to fertilization and irrigation style,is one of the most important factors that control the emission of methane from rice paddies.
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| 关 键 词： | 沼气 稻谷 冒泡 气候 大气温度 湖南 |
Factors affecting methane emission from rice paddies |
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| Yu Xinke,Li Ning,Li Chunyuan,Shao Bo,Wang Xianbin,Wang Weidong,Xie Xiaoli. Factors affecting methane emission from rice paddies[J]. Chinese Journal of Geochemistry, 1995, 14(1): 60-67. DOI: 10.1007/BF02840384 |
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| Authors: | Yu Xinke Li Ning Li Chunyuan Shao Bo Wang Xianbin Wang Weidong Xie Xiaoli |
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| Affiliation: | (1) State Key Laboratory of Gas Geochemistry, Institute of Geology, Chinese Academy of Sciences, 730000 Lanzhou;(2) Changsha Institute of Agricultural Modernization, Chinese Academy of Sciences, 410125 Changsha |
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| Abstract: | A comparative study of rice paddies and the uncovered water field in Taoyuan(Hunan) showed that methane emission from rice-vegetated paddy fields in 1993 was different from that in 1992 (i. e., lower in rates and irregular in pattern). Climate has obvious influence on methane emission. And ebullition made a considerable contribution to the total flux of methane emission from rice paddies (45%). This implies that the intensification of paddy cultivation of rice might not be, as was proposed, the main contributor to the observed gradual increasing of atmospheric methane. 24-hour automatic measurements of atmospheric temperature, air temperature and methane concentration in the static sampling boxes revealed that temperature, in addition to fertilization and irrigation style, is one of the most important factors that control the emission of methane from rice paddies. This project was financially supported by the National Natural Science Foundation of China (NSFC). |
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| Keywords: | methane emission rice paddy ebullition climate atmospheric temperature Taoyuan |
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