Emission of CO2 from biochar-amended soils and implications for soil organic carbon

E. Sagrilo; S.L. Jeffery; E. Hoffland; T.W. Kuyper

doi:10.1111/gcbb.12234

Emission of CO2 from biochar-amended soils and implications for soil organic carbon

E. Sagrilo^*, S.L. Jeffery, E. Hoffland, T.W. Kuyper

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

91 Citations (Scopus)

Abstract

Soil amendment with pyrogenic organic matter (PyOM), also named biochar, is claimed to sequester carbon (C). However, possible interactions between PyOM and native soil organic carbon (SOC) may accelerate the loss of SOC, thus reducing PyOM's C sequestration potential. We combined the results of 46 studies in a meta-analysis in order to investigate changes in CO2 emission of PyOM-amended soils and to identify the causes of these changes and the possible factors involved. Our results showed a statistically significant increase of 28% in CO2 emission from PyOM-amended soils. When grouped by PyOM-C (PyC):SOC ratios, the group of studies with a ratio >2 showed a significant increase in CO2 emissions, but those with a ratio

Original language	English
Pages (from-to)	1294-1304
Journal	Global change biology Bioenergy
Volume	7
Issue number	6
DOIs	https://doi.org/10.1111/gcbb.12234
Publication status	Published - 2015

Keywords

Additive effects
Carbon sequestration
Decomposition
Priming
Pyrogenic organic matter
Recalcitrance

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1111/gcbb.12234

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title = "Emission of CO2 from biochar-amended soils and implications for soil organic carbon",

abstract = "Soil amendment with pyrogenic organic matter (PyOM), also named biochar, is claimed to sequester carbon (C). However, possible interactions between PyOM and native soil organic carbon (SOC) may accelerate the loss of SOC, thus reducing PyOM's C sequestration potential. We combined the results of 46 studies in a meta-analysis in order to investigate changes in CO2 emission of PyOM-amended soils and to identify the causes of these changes and the possible factors involved. Our results showed a statistically significant increase of 28% in CO2 emission from PyOM-amended soils. When grouped by PyOM-C (PyC):SOC ratios, the group of studies with a ratio >2 showed a significant increase in CO2 emissions, but those with a ratio",

keywords = "Additive effects, Carbon sequestration, Decomposition, Priming, Pyrogenic organic matter, Recalcitrance",

author = "E. Sagrilo and S.L. Jeffery and E. Hoffland and T.W. Kuyper",

year = "2015",

doi = "10.1111/gcbb.12234",

language = "English",

volume = "7",

pages = "1294--1304",

journal = "Global change biology Bioenergy",

issn = "1757-1693",

publisher = "Wiley",

number = "6",

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TY - JOUR

T1 - Emission of CO2 from biochar-amended soils and implications for soil organic carbon

AU - Sagrilo, E.

AU - Jeffery, S.L.

AU - Hoffland, E.

AU - Kuyper, T.W.

PY - 2015

Y1 - 2015

N2 - Soil amendment with pyrogenic organic matter (PyOM), also named biochar, is claimed to sequester carbon (C). However, possible interactions between PyOM and native soil organic carbon (SOC) may accelerate the loss of SOC, thus reducing PyOM's C sequestration potential. We combined the results of 46 studies in a meta-analysis in order to investigate changes in CO2 emission of PyOM-amended soils and to identify the causes of these changes and the possible factors involved. Our results showed a statistically significant increase of 28% in CO2 emission from PyOM-amended soils. When grouped by PyOM-C (PyC):SOC ratios, the group of studies with a ratio >2 showed a significant increase in CO2 emissions, but those with a ratio

AB - Soil amendment with pyrogenic organic matter (PyOM), also named biochar, is claimed to sequester carbon (C). However, possible interactions between PyOM and native soil organic carbon (SOC) may accelerate the loss of SOC, thus reducing PyOM's C sequestration potential. We combined the results of 46 studies in a meta-analysis in order to investigate changes in CO2 emission of PyOM-amended soils and to identify the causes of these changes and the possible factors involved. Our results showed a statistically significant increase of 28% in CO2 emission from PyOM-amended soils. When grouped by PyOM-C (PyC):SOC ratios, the group of studies with a ratio >2 showed a significant increase in CO2 emissions, but those with a ratio

KW - Additive effects

KW - Carbon sequestration

KW - Decomposition

KW - Priming

KW - Pyrogenic organic matter

KW - Recalcitrance

U2 - 10.1111/gcbb.12234

DO - 10.1111/gcbb.12234

M3 - Article

SN - 1757-1693

VL - 7

SP - 1294

EP - 1304

JO - Global change biology Bioenergy

JF - Global change biology Bioenergy

IS - 6

ER -

Emission of CO2 from biochar-amended soils and implications for soil organic carbon

Abstract

Keywords

UN SDGs

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