The effects of nitrogen fertilizer application on methane and nitrous oxide emission/uptake in Chinese croplands
Abstract: The application of nitrogen (N) fertilizer to increase crop yields has a significant influence on soil methane (CH4) and nitrous oxide (N2O) emission/uptake. A meta-analysis was carried out on the effect of N application on (i) CH4 emissions in rice paddies, (ii) CH4 uptake in upland field...
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KeAi Communications Co., Ltd.
2016-02-01
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| Series: | Journal of Integrative Agriculture |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2095311915610632 |
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| author | Bin-feng SUN Hong ZHAO Yi-zhong LÜ Fei LU Xiao-ke WANG |
| author_facet | Bin-feng SUN Hong ZHAO Yi-zhong LÜ Fei LU Xiao-ke WANG |
| author_sort | Bin-feng SUN |
| collection | DOAJ |
| description | Abstract: The application of nitrogen (N) fertilizer to increase crop yields has a significant influence on soil methane (CH4) and nitrous oxide (N2O) emission/uptake. A meta-analysis was carried out on the effect of N application on (i) CH4 emissions in rice paddies, (ii) CH4 uptake in upland fields and (iii) N2O emissions. The responses of CH4 emissions to N application in rice paddies were highly variable and overall no effects were found. CH4 emissions were stimulated at low N application rates (<100 kg N ha−1) but inhibited at high N rates (>200 kg N ha−1) as compared to no N fertilizer (control). The response of CH4 uptake to N application in upland fields was 15% lower than control, with a mean CH4 uptake factor of −0.001 kg CH4-C kg−1 N. The mean N2O emission factors were 1.00 and 0.94% for maize (Zea mays) and wheat (Triticum aestivum), respectively, but significantly lower for the rice (Oryza sativa) (0.51%). Compared with controls, N addition overall increased global warming potential of CH4 and N2O emissions by 78%. Our result revealed that response of CH4 emission to N input might depend on the CH4 concentration in rice paddy. The critical factors that affected CH4 uptake and N2O emission were N fertilizer application rate and the controls of CH4 uptake and N2O emission. The influences of application times, cropping systems and measurement frequency should all be considered when assessing CH4 and N2O emissions/uptake induced by N fertilizer. |
| format | Article |
| id | doaj-art-e8277a17db2946a89b21c2e1be070243 |
| institution | Kabale University |
| issn | 2095-3119 |
| language | English |
| publishDate | 2016-02-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Journal of Integrative Agriculture |
| spelling | doaj-art-e8277a17db2946a89b21c2e1be0702432025-08-20T03:58:04ZengKeAi Communications Co., Ltd.Journal of Integrative Agriculture2095-31192016-02-0115244045010.1016/S2095-3119(15)61063-2The effects of nitrogen fertilizer application on methane and nitrous oxide emission/uptake in Chinese croplandsBin-feng SUN0Hong ZHAO1Yi-zhong LÜ2Fei LU3Xiao-ke WANG4State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P.R.China; University of Chinese Academy of Sciences, Beijing 100049, P.R.China; SUN Bin-feng, Mobile: +86-15562617079State Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P.R.China; University of Chinese Academy of Sciences, Beijing 100049, P.R.ChinaCollege of Resources and Environment, China Agricultural University, Beijing 100193, P.R.ChinaState Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P.R.ChinaState Key Laboratory of Urban and Regional Ecology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, P.R.China; Correspondence WANG Xiao-ke, Tel: +86-10-62943822Abstract: The application of nitrogen (N) fertilizer to increase crop yields has a significant influence on soil methane (CH4) and nitrous oxide (N2O) emission/uptake. A meta-analysis was carried out on the effect of N application on (i) CH4 emissions in rice paddies, (ii) CH4 uptake in upland fields and (iii) N2O emissions. The responses of CH4 emissions to N application in rice paddies were highly variable and overall no effects were found. CH4 emissions were stimulated at low N application rates (<100 kg N ha−1) but inhibited at high N rates (>200 kg N ha−1) as compared to no N fertilizer (control). The response of CH4 uptake to N application in upland fields was 15% lower than control, with a mean CH4 uptake factor of −0.001 kg CH4-C kg−1 N. The mean N2O emission factors were 1.00 and 0.94% for maize (Zea mays) and wheat (Triticum aestivum), respectively, but significantly lower for the rice (Oryza sativa) (0.51%). Compared with controls, N addition overall increased global warming potential of CH4 and N2O emissions by 78%. Our result revealed that response of CH4 emission to N input might depend on the CH4 concentration in rice paddy. The critical factors that affected CH4 uptake and N2O emission were N fertilizer application rate and the controls of CH4 uptake and N2O emission. The influences of application times, cropping systems and measurement frequency should all be considered when assessing CH4 and N2O emissions/uptake induced by N fertilizer.http://www.sciencedirect.com/science/article/pii/S2095311915610632nitrogen fertilizermethanenitrous oxideglobal warming potentialemission factor |
| spellingShingle | Bin-feng SUN Hong ZHAO Yi-zhong LÜ Fei LU Xiao-ke WANG The effects of nitrogen fertilizer application on methane and nitrous oxide emission/uptake in Chinese croplands Journal of Integrative Agriculture nitrogen fertilizer methane nitrous oxide global warming potential emission factor |
| title | The effects of nitrogen fertilizer application on methane and nitrous oxide emission/uptake in Chinese croplands |
| title_full | The effects of nitrogen fertilizer application on methane and nitrous oxide emission/uptake in Chinese croplands |
| title_fullStr | The effects of nitrogen fertilizer application on methane and nitrous oxide emission/uptake in Chinese croplands |
| title_full_unstemmed | The effects of nitrogen fertilizer application on methane and nitrous oxide emission/uptake in Chinese croplands |
| title_short | The effects of nitrogen fertilizer application on methane and nitrous oxide emission/uptake in Chinese croplands |
| title_sort | effects of nitrogen fertilizer application on methane and nitrous oxide emission uptake in chinese croplands |
| topic | nitrogen fertilizer methane nitrous oxide global warming potential emission factor |
| url | http://www.sciencedirect.com/science/article/pii/S2095311915610632 |
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