Agronomy 2013, 3(2), 313-339; doi:10.3390/agronomy3020313

Biochar Impacts on Soil Physical Properties and Greenhouse Gas Emissions

Received: 3 December 2012; in revised form: 25 February 2013 / Accepted: 7 April 2013 / Published: 18 April 2013
(This article belongs to the Special Issue Biochar as Option for Sustainable Resource Management)
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract: Biochar, a co-product of a controlled pyrolysis process, can be used as a tool for sequestering C in soil to offset greenhouse gas (GHG) emissions, and as a soil amendment. Whereas the impacts of biochar application on soil chemical properties are widely known, the research information on soil physical properties is scarce. The objectives of this review are to (i) synthesize available data on soil physical properties and GHG emissions, (ii) offer possible mechanisms related to the biochar-amended soil processes, and (iii) identify researchable priorities. Application rates of 1%–2% (w/w) of biochar can significantly improve soil physical quality in terms of bulk density (BD), and water holding capacity (WHC). However, little data are available on surface area (SA), aggregation stability, and penetration resistance (PR) of biochar-amended soil. While biochar amendment can initially accentuate the flux of carbon dioxide (CO2), the emission of GHGs may be suppressed over time. A 2-phase complexation hypothesis is proposed regarding the mechanisms of the interaction between soil and biochar.
Keywords: biochar; green house gas (GHG) emissions; soil amendment; soil physical properties; soil quality
PDF Full-text Download PDF Full-Text [306 KB, Updated Version, uploaded 24 April 2013 09:36 CEST]
The original version is still available [313 KB, uploaded 18 April 2013 11:42 CEST]

Export to BibTeX |

MDPI and ACS Style

Mukherjee, A.; Lal, R. Biochar Impacts on Soil Physical Properties and Greenhouse Gas Emissions. Agronomy 2013, 3, 313-339.

AMA Style

Mukherjee A, Lal R. Biochar Impacts on Soil Physical Properties and Greenhouse Gas Emissions. Agronomy. 2013; 3(2):313-339.

Chicago/Turabian Style

Mukherjee, Atanu; Lal, Rattan. 2013. "Biochar Impacts on Soil Physical Properties and Greenhouse Gas Emissions." Agronomy 3, no. 2: 313-339.

Agronomy EISSN 2073-4395 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert