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| Rational application of biochar to sequester carbon and mitigate soil GHGs emissions: A review |
| Received:January 08, 2020 |
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| KeyWord:biochar;carbon sequestration;greenhouse gases emission;CH4;N2O;review |
| Author Name | Affiliation | | XIE Zu-bin | State Key Laboratory of Soil & Sustainable Agriculture, Institute of Soil Science, Chinese of Academy of Sciences, Nanjing 210008, China | | LIU Qi | College of Forestry, Nanjing Forestry University, Nanjing 210037, China
Co-Innovation Center for Sustainable Forestry in Southern China, Nanjing Forestry University, Nanjing 210037, China |
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| Abstract: |
| In last decade, a lot of work has been done on the effects of short-term and one application of biochar on crop yield, soil carbon sequestration and greenhouse gases emissions. Results show that biochar can increase soil organic carbon. However, the effects of biochar on crop yield, CH4 and N2O emissions vary with biochar types and soil properties. Increase magnitude of biochar application in acid soil is higher than that in neutral or alkaline soil. Straw or wood biochar can decrease farmland N2O emission, however manure biochar can't. The decrease magnitude of biochar application on N2O emission in tropical and subtropical area is smaller than that in temperate area. In addition, the effects of biochar on greenhouse gas mitigation are also impacted by biochar production technique. Before biochar can be extensively used, the effects of long-term and multi-application of biochar on crop growth and soil greenhouse gases emissions, and interactions of biochar properties and soil types must be investigated. And the biochar production techniques must be explored. |
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