Short- and long-term impacts of plant-biochar-soil interactions on soil carbon cycling in a subtropical pasture

Title
Short- and long-term impacts of plant-biochar-soil interactions on soil carbon cycling in a subtropical pasture
Publication Date
2016
Author(s)
Weng, Zhe Han
Van Zwieten, Lukas
Kimber, Stephen
Singh, Bhupinder Pal
Cowie, Annette
Type of document
Thesis Doctoral
Language
en
Entity Type
Publication
UNE publication id
une:22654
Abstract
While biochar has been widely promoted for its potential to stabilise soil organic carbon (SOC), many laboratory and glasshouse studies (mainly short-term) have demonstrated that biochar can increase (positive priming) and/or lower (negative priming) mineralisation of SOC. There is a clear knowledge gap on both biochar carbon (C) longevity, its priming effects on SOC, and recent root-derived C, under field conditions. This knowledge would allow the potential contribution of biochar to long-term soil C sequestration to be understood. Understanding plant -biochar-soil interactions (Chapter 1) over the long term is crucial to accurately predict the C storage potential of biochar-amended soil, additional to its intrinsic C content.
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