Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.14613 |
Biochar application as a tool to decrease soil nitrogen losses (NH3 volatilization, N2O emissions, and N leaching) from croplands: Options and mitigation strength in a global perspective | |
Liu, Qi1,2,3; Liu, Benjuan1,2; Zhang, Yanhui1,2; Hu, Tianlong1,2; Lin, Zhibin1,2; Liu, Gang1; Wang, Xiaojie1,2; Ma, Jing1,2; Wang, Hui1,2; Jin, Haiyang1,2; Ambus, Per4; Amonette, James E.5,6; Xie, Zubin1 | |
2019-06-01 | |
发表期刊 | GLOBAL CHANGE BIOLOGY
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ISSN | 1354-1013 |
EISSN | 1365-2486 |
出版年 | 2019 |
卷号 | 25期号:6页码:2077-2093 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China; Denmark; USA |
英文摘要 | Biochar application to croplands has been proposed as a potential strategy to decrease losses of soil-reactive nitrogen (N) to the air and water. However, the extent and spatial variability of biochar function at the global level are still unclear. Using Random Forest regression modelling of machine learning based on data compiled from the literature, we mapped the impacts of different biochar types (derived from wood, straw, or manure), and their interactions with biochar application rates, soil properties, and environmental factors, on soil N losses (NH3 volatilization, N2O emissions, and N leaching) and crop productivity. The results show that a suitable distribution of biochar across global croplands (i.e., one application of <40 t ha(-1) wood biochar for poorly buffered soils, such as those characterized by soil pH<5, organic carbon<1%, or clay>30%; and one application of <80 t ha(-1) wood biochar, <40 t ha(-1) straw biochar, or <10 t ha(-1) manure biochar for other soils) could achieve an increase in global crop yields by 222-766 Tg yr(-1) (4%-16% increase), a mitigation of cropland N2O emissions by 0.19-0.88 Tg N yr(-1) (6%-30% decrease), a decline of cropland N leaching by 3.9-9.2 Tg N yr(-1) (12%-29% decrease), but also a fluctuation of cropland NH3 volatilization by -1.9-4.7 Tg N yr(-1) (-12%-31% change). The decreased sum of the three major reactive N losses amount to 1.7-9.4 Tg N yr(-1), which corresponds to 3%-14% of the global cropland total N loss. Biochar generally has a larger potential for decreasing soil N losses but with less benefits to crop production in temperate regions than in tropical regions. |
英文关键词 | biochar machine learning N leaching N2O NH3 spatial variability |
领域 | 气候变化 ; 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000467441900017 |
WOS关键词 | CARBON ; PYROLYSIS ; DENITRIFICATION ; METAANALYSIS ; TEMPERATURE ; NUTRITION ; DYNAMICS ; SYSTEM ; IMPACT ; FLUXES |
WOS类目 | Biodiversity Conservation ; Ecology ; Environmental Sciences |
WOS研究方向 | Biodiversity & Conservation ; Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/183822 |
专题 | 气候变化 资源环境科学 |
作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing, Jiangsu, Peoples R China; 2.Univ Chinese Acad Sci, Beijing, Peoples R China; 3.Nanjing Forestry Univ, Coll Forestry, Nanjing, Jiangsu, Peoples R China; 4.Univ Copenhagen, Dept Geosci & Nat Resource Management, Copenhagen, Denmark; 5.Pacific Northwest Natl Lab, Phys Sci Div, Richland, WA 99352 USA; 6.Washington State Univ, Ctr Sustaining Agr & Nat Resources, Pullman, WA 99164 USA |
推荐引用方式 GB/T 7714 | Liu, Qi,Liu, Benjuan,Zhang, Yanhui,et al. Biochar application as a tool to decrease soil nitrogen losses (NH3 volatilization, N2O emissions, and N leaching) from croplands: Options and mitigation strength in a global perspective[J]. GLOBAL CHANGE BIOLOGY,2019,25(6):2077-2093. |
APA | Liu, Qi.,Liu, Benjuan.,Zhang, Yanhui.,Hu, Tianlong.,Lin, Zhibin.,...&Xie, Zubin.(2019).Biochar application as a tool to decrease soil nitrogen losses (NH3 volatilization, N2O emissions, and N leaching) from croplands: Options and mitigation strength in a global perspective.GLOBAL CHANGE BIOLOGY,25(6),2077-2093. |
MLA | Liu, Qi,et al."Biochar application as a tool to decrease soil nitrogen losses (NH3 volatilization, N2O emissions, and N leaching) from croplands: Options and mitigation strength in a global perspective".GLOBAL CHANGE BIOLOGY 25.6(2019):2077-2093. |
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