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| Effect of biochar on C and N mineralization in soil from Chinese fir plantation |
| Received:August 22, 2016 |
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| KeyWord:Chinese fir;biochar;litter;plantation soil;mineralization;carbon nitrogen |
| Author Name | Affiliation | E-mail | | LI Ying | College of Foresty, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Co-innovation Center for Soil and Water Conservation in Red Soil Region of the Cross-straits, Fuzhou 350002, China | | | WEI Zhi-chao | College of Foresty, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Co-innovation Center for Soil and Water Conservation in Red Soil Region of the Cross-straits, Fuzhou 350002, China | | | LI Hui-tong | College of Foresty, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Co-innovation Center for Soil and Water Conservation in Red Soil Region of the Cross-straits, Fuzhou 350002, China | | | QIU Yun-xiao | College of Foresty, Fujian Agriculture and Forestry University, Fuzhou 350002, China | | | ZHOU Chui-fan | College of Foresty, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Co-innovation Center for Soil and Water Conservation in Red Soil Region of the Cross-straits, Fuzhou 350002, China | | | MA Xiang-qing | College of Foresty, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Co-innovation Center for Soil and Water Conservation in Red Soil Region of the Cross-straits, Fuzhou 350002, China | lxymxq@126.com |
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| Abstract: |
| To explore the effects of biochar on mineralization of soil organic carbon and nitrogen, alaboratory incubation pot experiment was conducted. Overall four treatments viz a viz (a) soil, (b) soil+biochar, (c) soil+biochar+litter, (d) soil+litter were provided to study the characteristics of the release of carbon dioxide and soil mineral N; as well as the changes in microbial biomass and dissolve organic carbon. The results showed that compared with control soil, the addition of biochar to soil with or without litter suppressed the mineralization of native soil organic carbon and/or litter-C. The adsorption of DOC by biochar significantly reduced the available carbon for soil microbial biomass carbon. Biochar alone added to the soil at the end of the incubation did not changed the soil N mineralization but reduced soil N mineralization in the process of incubation.However, addition of litter to soil with or without biochar significantly reduced soil N mineralization and increased the microbial biomass nitrogen. It was concluded that biochar have short term effect for nitrogen conservation of soil in the presence of litter. |
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