IMHE OpenIR  > 成都山地所知识仓储(2009年以前)
Alternative TitleMethane Emissions from Rice Fields in the Chengdu Plain of China
任丽新1; 王庚辰1; 张仁健1; 段长麟2; M.A.K.Khalil3; M.J.Shearer3; R.A.Rasmussen4; R.W.Dalluge4
Corresponding Author任丽新
Source Publication大气科学
Other Abstract



According to the measured data of four rice seasons between 1996 and 1999, characteristics of seasonal variation and annual variation of methane emission are analyzed for single-season rice in the Chengdu Plain. The results show a great variation in methane emission during the rice growing season, and the peak values appear during tillering period and fruiting period. A great inter-annual change is also observed and ranged from 2.35 mg m~(-2)h~(-1) to 33.95 mg m~(-2)h~(-1). The averaged value of CH_4 emission for the four years is 12 mg m~(-2)h~(-1). Compared with 30 mg m~(-2)h~(-1) for the 7-year average of Leshan in Sichuan Province, there is an apparent regional difference. Methane emission from rice field is affected by several factors including temperature, fertilization, rice variety, soil oxidation-reduction potential and water depth of rice field and so on. Results show that the average temperature during rice growing season in the Chengdu Plain has a little influence on annual CH_4 emission. However, during the early growing season, the temperature has a relatively significant influence on daily variation of CH_4 emission from rice field. Another finding is that the weights of root, stalk and leaf of rice plant body have a significant influence on CH_4 emission. An optimum combination of many effective factors is proposed in order to develop its potential of reducing CH_4 emission.

Keyword稻田 甲烷 季节变化 年际变化
Subject AreaS161
Indexed ByCSCD ; 北大中文核心
Funding Organization本文为中国科学院与美国能源部的联合研究项目“二氧化碳导致气候变化”中第四课题的工作内容
Citation statistics
Cited Times:13[CSCD]   [CSCD Record]
Document Type期刊论文
3.Department of Physics, Portland State University, P.O. Box 751 Portland, 美国, Oregon
4.Department of Environmental Science and Engineering, Oregon Graduate Institute, P.O. Box 91000 Portland, 美国, Oregon
Recommended Citation
GB/T 7714
任丽新,王庚辰,张仁健,等. 成都平原稻田甲烷排放的实验研究[J]. 大气科学,2002,26(6):731-743.
APA 任丽新.,王庚辰.,张仁健.,段长麟.,M.A.K.Khalil.,...&R.W.Dalluge.(2002).成都平原稻田甲烷排放的实验研究.大气科学,26(6),731-743.
MLA 任丽新,et al."成都平原稻田甲烷排放的实验研究".大气科学 26.6(2002):731-743.
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