文章基本信息

标题：Biochar as a tool to reduce the agricultural greenhouse-gas burden – knowns, unknowns and future research needs
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作者：Claudia Kammann ; Jim Ippolito ; Nikolas Hagemann 等
期刊名称：Journal of Environmental Engineering and Landscape Management
印刷版ISSN：1648-6897
电子版ISSN：1822-4199
出版年度：2017
卷号：25
期号：2
页码：114-139
DOI：10.3846/16486897.2017.1319375
语种：English
出版社：Taylor & Francis Group
摘要：Agriculture and land use change has significantly increased atmospheric emissions of the non-CO2 green-house gases (GHG) nitrous oxide (N2O) and methane (CH4). Since human nutritional and bioenergy needs continue to increase, at a shrinking global land area for production, novel land management strategies are required that reduce the GHG footprint per unit of yield. Here we review the potential of biochar to reduce N2O and CH4 emissions from agricultural practices including potential mechanisms behind observed effects. Furthermore, we investigate alternative uses of biochar in agricultural land management that may significantly reduce the GHG-emissions-per-unit-of-product footprint, such as (i) pyrolysis of manures as hygienic alternative to direct soil application, (ii) using biochar as fertilizer carrier matrix for underfoot fertilization, biochar use (iii) as composting additive or (iv) as feed additive in animal husbandry or for manure treatment. We conclude that the largest future research ne...
关键词：biochar; greenhouse gases (GHG); nitrous oxide (N2O); methane (CH4); soil aeration; nitrate; soil N transformations; GHG intensity