Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/13198
Title: A novel approach, using 13C natural abundance, for measuring decomposition of biochars in soil
Contributor(s): Singh, Bhupinderpal  (author); Cowie, Annette  (author)
Publication Date: 2008
Handle Link: https://hdl.handle.net/1959.11/13198
Abstract: There is growing interest in the use of artificially-produced biochar (black carbon) as a soil amendment, with potential to increase soil carbon (C), reduce greenhouse gas emissions, improve soil properties, and enhance agricultural productivity. However, promoting the use of biochar for increasing soil C sequestration will depend on demonstrating its ability to persist in soil. The biochar produced during incomplete combustion of biomass at temperatures > 200°C, and under limited oxygen supply (pyrolysis), is considered highly resistant to biological degradation due to its increased chemical recalcitrance (aromaticity) compared with the parent feedstock. Despite some exceptions, C in natural biochar has been shown to posses turnover time of a few 100 to >1000 years in soil. However, little research has been undertaken to: (i) document turnover rate of artificially-produced (in thermal reactors) biochars applied to soil, (ii) measure and account for any priming effect of biochar addition on turnover of 'native' soil C, and (iii) elucidate stabilisation mechanisms of biochar C in soil.
Publication Type: Conference Publication
Conference Name: 21st Annual Fertilizer and Lime Research Centre (FLRC) Workshop, Palmerston North, New Zealand, 13th - 14th February, 2008
Conference Details: 21st Annual Fertilizer and Lime Research Centre (FLRC) Workshop, Palmerston North, New Zealand, 13th - 14th February, 2008
Source of Publication: Carbon and Nutrient Management in Agriculture, p. 4-4
Publisher: Fertilizer and Lime Research Centre, Massey University
Place of Publication: Palmerston North, New Zealand
Field of Research (FOR): 050301 Carbon Sequestration Science
Socio-Economic Outcome Codes: 850501 Biofuel (Biomass) Energy
961499 Soils not elsewhere classified
HERDC Category Description: E3 Extract of Scholarly Conference Publication
Other Links: http://www.massey.ac.nz/~flrc/workshops/08/paperlist.html
Series Name: Occasional Report
Series Number : 21
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