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来源类型 | Articles |
规范类型 | 论文 |
DOI | https://doi.org/10.1016/j.scitotenv.2018.10.060 |
ISSN | 0048-9697 |
Biochar, soil and land-use interactions that reduce nitrate leaching and N2O emissions: A meta-analysis | |
Libert Amico, A.; Trench, T.; Rodriguez, A.; Martínez-Morales, M.P. | |
发表日期 | 2019 |
出处 | Science of The Total Environment 651(Part 2): 2354-2364 |
出版年 | 2019 |
语种 | 英语 |
摘要 | Biochar can reduce both nitrous oxide (N2O) emissions and nitrate (NO3-) leaching, but refining biochar’s use for estimating these types of losses remains elusive. For example, biochar properties such as ash content and labile organic compounds may induce transient effects that alter N-based losses. Thus, the aim of this meta-analysis was to assess interactions between biochar-induced effects on N2O emissions and NO3- retention, regarding the duration of experiments as well as soil and land use properties. Data were compiled from 88 peer-reviewed publications resulting in 608 observations up to May 2016 and corresponding response ratios were used to perform a random effects meta-analysis, testing biochar’s impact on cumulative N2O emissions, soil NO3- concentrations and leaching in temperate, semi-arid, sub-tropical, and tropical climate. The overall N2O emissions reduction was 38%, but N2O emission reductions tended to be negligible after one year. Overall, soil NO3- concentrations remained unaffected while NO3- leaching was reduced by 13% with biochar; greater leaching reductions (>26%) occurred over longer experimental times (i.e. >30 days). Biochar had the strongest N2O-emission reducing effect in paddy soils (Anthrosols) and sandy soils (Arenosols). The use of biochar reduced both N2O emissions and NO3- leaching in arable farming and horticulture, but it did not affect these losses in grasslands and perennial crops. In conclusion, the time-dependent impact on N2O emissions and NO3- leaching is a crucial factor that needs to be considered in order to develop and test resilient and sustainable biochar-based N loss mitigation strategies. Our results provide a valuable starting point for future biochar-based N loss mitigation studies. |
主题 | land use ; fertilization ; nitrification ; nitrous oxide ; nitrogen ; soil organic carbon |
URL | https://www.cifor.org/library/7039/ |
来源智库 | Center for International Forestry Research (Indonesia) |
引用统计 | |
资源类型 | 智库出版物 |
条目标识符 | http://119.78.100.153/handle/2XGU8XDN/94022 |
推荐引用方式 GB/T 7714 | Libert Amico, A.,Trench, T.,Rodriguez, A.,et al. Biochar, soil and land-use interactions that reduce nitrate leaching and N2O emissions: A meta-analysis. 2019. |
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