We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Effects of biochar and dicyandiamide combination on nitrous oxide emissions from Camellia oleifera field soil.
- Authors
Deng, Bang-Liang; Wang, Shu-Li; Xu, Xin-Tong; Wang, Hua; Hu, Dong-Nan; Guo, Xiao-Min; Shi, Qing-Hua; Siemann, Evan; Zhang, Ling
- Abstract
Greenhouse gas emissions from agricultural soils contribute substantially to global atmospheric composition. Nitrous oxide (N2O) is one important greenhouse gas induces global warming. Nitrification inhibitors (NI) or biochar can be effective soil N2O emission mitigation strategies for agricultural soils. However, due to differences in crop physiological traits or agricultural management, the effectiveness of mitigation strategies varies among agricultural systems. Camellia oleifera is a woody oil plant widely grown and requires intensive N input, which will potentially increase N2O emissions. Thereby, mitigation of N2O emissions from C. oleifera field soil is vital for sustainable C. oleifera development. Besides NI, incorporation of C. oleifera fruit shell-derived biochar into its soil will benefit waste management and simultaneous mitigation of N2O emissions but this has not been investigated. Here, we conducted two studies to examine effects of biochar addition and NI (dicyandiamide, DCD) application on N2O emissions from C. oleifera field soil with different N (urea or NH4NO3) and incubation temperatures. Biochar effects on nitrification rates varied among N treatments. Biochar applied in combination with DCD further reduced nitrification rates (for urea treatment, decreased from 1.1 to 0.3 mg kg−1 day−1). Biochar addition consistently increased soil N2O emissions (for urea treatment, increased from 0.03 to 0.08 ng g−1 h−1) and their temperature sensitivity. DCD application reduced soil N2O emissions with greater reductions with urea application. In future cultivation of intensively managed C. oleifera gardens, NI should be applied to mitigate N2O emissions if biochar is added, especially when urea is used.
- Subjects
BIOCHAR; DICYANDIAMIDE; NITROUS oxide &; the environment; CAMELLIA oleifera; EMISSIONS (Air pollution); GREENHOUSE gas mitigation
- Publication
Environmental Science & Pollution Research, 2019, Vol 26, Issue 4, p4070
- ISSN
0944-1344
- Publication type
Article
- DOI
10.1007/s11356-018-3900-3