https://nova.newcastle.edu.au/vital/access/ /manager/Index en-au 5 Decomposition of soil organic matter as affected by clay types, pedogenic oxides and plant residue addition rates https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38109 Wed 04 Aug 2021 09:52:45 AEST ]]> Clay minerals as the key to the sequestration of carbon in soils https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:38611 Thu 18 Nov 2021 14:12:30 AEDT ]]> Relationship between soil clay mineralogy and carbon protection capacity as influenced by temperature and moisture https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:31377 14C labelled malic acid confirmed the trend of the bulk respiration results. The allophanic soil showed the lowest amount of carbon mineralisation under all experimental conditions. A strong inverse correlation (R2 = 0.90 at p < 0.05) was observed between CO2 emission rate and total sesquioxides (Fe and Al oxides) content. As evidenced by the pore size distribution, micromorphologies and thermogravimetric analyses, the microporous structure and microaggregate formation in the allophanic soil enhanced carbon sequestration. This study indicated that soil carbon stabilisation was related more to the sesquioxides content than to the clay types or their relative specific surface areas]]> Sat 24 Mar 2018 08:44:09 AEDT ]]> Influence of physico-chemical properties of soil clay fractions on the retention of dissolved organic carbon https://nova.newcastle.edu.au/vital/access/ /manager/Repository/uon:34652 max) and SSA. The Qmax value also showed a moderately strong relationship (R² = 0.55, p < 0.05) with zeta potential (at pH 7). Qmax was only poorly correlated with CEC and native OC content. Therefore, along with SSA, the surface charge and functional groups of SCFs played the key role in determining the adsorption affinity and hence retention of DOC in soils.]]> Mon 08 Apr 2019 13:03:30 AEST ]]>