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- W2897569712 abstract "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." @default.
- W2897569712 created "2018-10-26" @default.
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- W2897569712 date "2019-02-01" @default.
- W2897569712 modified "2023-10-15" @default.
- W2897569712 title "Biochar, soil and land-use interactions that reduce nitrate leaching and N2O emissions: A meta-analysis" @default.
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- W2897569712 doi "https://doi.org/10.1016/j.scitotenv.2018.10.060" @default.
- W2897569712 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/30336425" @default.
- W2897569712 hasPublicationYear "2019" @default.
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