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| Soil N2O emissions from orchards: Current status and challenges |
| Received:January 15, 2020 |
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| KeyWord:fruit orchard;chemical fertilizer;organic manure;N2O emissions;N application rate |
| Author Name | Affiliation | E-mail | | GU Jiang-xin | College of Natural Resources and Environment, Northwest A & F University, Yangling 712100, China | | | GUO Yan-jie | College of Resources & Environmental Sciences, Hebei Agricultural University, Baoding 071001, China | | | ZHANG Li-juan | College of Resources & Environmental Sciences, Hebei Agricultural University, Baoding 071001, China | | | WANG Jing | Co-Innovation Center for Sustainable Forestry in Southern China, College of Forestry, Nanjing Forestry University, Nanjing 210037, China | | | WANG Shen-qiang | State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China | | | HU Rong-gui | College of Resources and Environment, Huazhong Agricultural University, Wuhan 430070, China | | | ZHANG Jin-bo | School of Geography, Nanjing Normal University, Nanjing 210023, China
Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China | | | CAI Zu-cong | School of Geography, Nanjing Normal University, Nanjing 210023, China
Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China | | | CHENG Yi | School of Geography, Nanjing Normal University, Nanjing 210023, China
Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China | ycheng@njnu.edu.cn |
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| Abstract: |
| Fruit orchards are characterized by extremely high rates of N application, which raises serious concerns about the risk of high soil nitrous oxide(N2O)emissions, which is an important greenhouse gas. Here, we reviewed the complexity of soil N2O emission monitoring in fruit orchard systems, how to form effective monitoring systems, temporal and spatial variations, and potential mitigation strategies. In addition, future research directions were proposed. Future studies should focus on the following four areas:establishing monitoring standards for soil N2O emissions under different types of fruit orchards; developing fruit orchard-specific mitigation strategies for soil N2O emissions under varied fertilization, irrigation, and management models; exploring the relationship between soil N2O emissions and soil N transformation processes and their associated microbial mechanisms; and developing models of soil N balance and related N2O emissions in fruit orchards. |
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