Alkaline ameliorants increase nitrous oxide emission from acidified black soil in Northeastern China |
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| Authors: | Zuoqiang Han Xilin Zhang Yanjiao Qiao Lianfeng Wang |
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| Institution: | 1. Key Laboratory of Environmental Science and Technology, Education Department of Liaoning Province, College of Environmental and Chemical Engineering, Dalian Jiaotong University, Dalian 116028, China;2. Institute of Soil and Fertilizer, Heilongjiang Academy of Agricultural Sciences, Harbin 150086, China;3. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;1. Agriculture and Agri-Food Canada, Fredericton Research and Development Centre, Fredericton, NB, E3B 4Z7, Canada;2. Department of Environmental Sciences, Dalhousie University, Truro, NS, B2N 5E3, Canada;3. Agriculture and Agri-Food Canada, Québec Research and Development Centre, 2560, Hochelaga Blvd, Québec, QC, G1V 2J3, Canada;1. Key Laboratory of Mollisols Agroecology, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin 150081 (China);2. Institute of Soil and Fertilizer and Environment Resources, Heilongjiang Academy of Agricultural Sciences, Harbin 150086 (China);3. Institute of Agricultural Resource and Environment, Jilin Academy of Agricultural Sciences, Changchun 130033 (China);4. Heihe Branch of Heilongjiang Academy of Agricultural Sciences, Heihe 164300 (China);5. Institute of Plant Nutrition and Resources, Beijing Academy of Agricultureand Forestry Sciences, Beijing 100097 (China);1. State Key Laboratory of Soil and Sustainable Agriculture, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008, China;2. University of Chinese Academy of Sciences, Beijing 100049, China;3. Department of Plant Ecology, Justus-Liebig University Giessen, Heinrich-Buff-Ring 26, 35392 Giessen, Germany;4. Soil and Water Management & Crop Nutrition Section, Department of Nuclear Sciences and Applications, International Atomic Energy Agency, 1400 Vienna, Austria;5. Wondo Genet College of Forestry and Natural Resources, Hawassa University, Shashemene, Ethiopia;1. Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;2. Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences, Ministry of Agriculture Key Laboratory of Agro-Environment and Climate Change, Beijing 100081, China;3. College of Agriculture, Shihezi University, Shihezi, 832000, China;1. Ministry of Agriculture Key Laboratory of Crop Nutrition and Fertilization, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China;2. School of Chemistry and Chemical Engineering, Hunan Institute of Engineering, Xiangtan 411104, China;3. Center of Agricultural Environment and Resource, Jilin Academy of Agricultural Sciences, Changchun 136000, China;4. Ministry of Education Key Laboratory of Environment Remediation and Ecological Health, College of Environmental & Resource Sciences, Zhejiang University, Hangzhou 310058, China;5. AgResearch, Private Bag 4749, Lincoln, Christchurch 8140, New Zealand |
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| Abstract: | Lime and plant ash are common management used to achieve optimum pH for plant growth and improve soil properties in agricultural soils. Laboratory incubation was conducted to assess N20 emissions as influenced by different soil amendments (lime and plant ash) in a slightly acidic arable soil (pH 5.34). The experimental treatments consisted of CK, lime and plant ash fertilized with NH4+-N or N03?-N as nitrogen resource. The results show that lime and plant ash dramatically increases the soil pH and N20 emission. For N03?-N fertilization, the cumulative N20 emissions from CK, lime and ash are 421, 1669 and 921 μg N20-N/kg, respectively. For NH4+-N fertilization, the cumulative N20 emissions from CK, lime and ash are 361, 576 and 559 μg N20-N/kg, respectively. N03?-N addition leads to more N20 emission than that of NH4+-N addition, and lime increases more N20 emission than that of plant ash. After incubation, N03?-N content decreased largely. The findings suggested that alkaline ameliorants increase N20 emissions due to enhancement of soil denitrification. |
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