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CORRELATION ANALYSIS OF CH4 EMISSIONS FROM PADDY SOILS WITH CHANGES IN OXIDIZABLE ORGANIC CARBON

文献类型： 外文期刊

作者： Wu, Jiamei 2 ; Ji, Xionghui 2 ; Huo, Lianjie 1 ; Peng, Hua 2 ; Liu, Yong 1 ;

作者机构： 1.Cent S Univ, Longping Dept, Changsha 410125, Hunan, Peoples R China

2.Inst Soil & Fertilizer Hunan Prov, Changsha 410125, Hunan, Peoples R China

3.Minister Agr, Key Lab Agra Environm Midstream Yangtze Plain, Changsha 410125, Hunan, Peoples R China

4.Hunan Plant Protect Inst, Changsha, Hunan, Peoples R China

关键词： methane emission;organic carbon fraction;paddy field;soil organic carbon

期刊名称：ENVIRONMENTAL ENGINEERING AND MANAGEMENT JOURNAL （ 影响因子：0.916； 五年影响因子：0.869 ）

ISSN： 1582-9596

年卷期： 2015 年 14 卷 1 期

页码：

收录情况： SCI

摘要： Soil organic carbon is one of the key substrates affecting methane emissions in paddy fields. However, not all soil organic carbon forms methane. This study therefore involved comparative analysis of the methanogenesis of different organic carbon sources (rice straw, chicken manure and pig manure) in paddy field soils. The results indicated that whereas methane emissions from the pig manure treatment (PM) were not significantly different to those associated with the application of chemical fertilizer (CF), methane emissions from the chicken manure (CM) and straw treatments (RS) were greater by 1.67 times (p < 0.05) and 2.69 times (p < 0.05), respectively. Soil organic carbon content exhibited the same order as methane emissions: RS > CM > PM > no fertilizer. Correlation analysis revealed that, for different fractions of organic carbon, fraction 1 (organic carbon fraction oxidized by 33 mmol / L KMnO4) and methane emissions were directly related. Thus, organic carbon in soil is easily oxidizable in organic carbon fraction 1 - the primary substrate for methanogenesis. The development of effective measures to reduce the content of this fraction may therefore represent a key method of mitigating methane emissions.

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[1]The effect of rice straw incorporation into paddy soil on carbon sequestration and emissions in the double cropping rice system. Wu Jiamei,Peng Hua,Shi Lihong,Liu Zhaobing,Tian Faxiang,Ji Xionghui,Wu Jiamei,Peng Hua,Shi Lihong,Liu Zhaobing,Tian Faxiang,Wu Jiamei,Huo Liangjie,Zhu Jian,Zhang Zhenhua. 2012

[2]Testing the modified Rothamsted Carbon Model for paddy soils against the results from long-term experiments in southern China. Xu, Minggang,Jiang, Guiying,Shirato, Yasuhito,Yagasaki, Yasumi,Huang, Qinghai,Li, Zuzhang,Nie, Jun,Shi, Xiaojun. 2013

[3]Effects of organic amendments on soil carbon sequestration in paddy fields of subtropical China. Xu, Minggang,Wang, Xiujun,Wang, Xiujun,Huang, Qinhai,Nie, Jun,Li, Zuzhang,Li, Shuanglai,Hwang, Seon Woong,Lee, Kyeong Bo. 2012

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