https://ogma.newcastle.edu.au/vital/access/ /manager/Index ${session.getAttribute("locale")} 5 Understanding and quantifying whole soil-profile organic carbon transfer using an environmental tracer https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55007 Thu 28 Mar 2024 13:58:38 AEDT ]]> Stability and storage of soil organic carbon in a heavy-textured Karst soil from south-eastern Australia https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:20113 Sat 24 Mar 2018 07:51:47 AEDT ]]> Change in water extractable organic carbon and microbial PLFAs of biochar during incubation with an acidic paddy soil https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:26348 Sat 24 Mar 2018 07:35:54 AEDT ]]> Nitrification potential in the rhizosphere of Australian native vegetation https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:30898 Scaevola albida, Chrysocephalum semipapposum, and Enteropogon acicularis. Some Australian native plants inhibited nitrification in their rhizosphere. We propose future studies on these selected plant species by identifying and characterising the nitrification inhibiting compounds and also the potential of nitrification inhibition in reducing nitrogen losses through nitrate leaching and nitrous oxide emission.]]> Sat 24 Mar 2018 07:30:39 AEDT ]]> Determining the depth and rate of soil movement down the soil profile using an environmental tracer: a hillslope scale assessment https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:55695 Mon 17 Jun 2024 15:05:57 AEST ]]> Changes in soil-pores and wheat root geometry due to strategic tillage in a no-tillage cropping system https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:38226 75 μm), was 13.4% higher under CT, but mesoporosity (30–75 μm) was 9.6% higher under NT. The vertical distributions of root biomass and root architecture measurements (i.e. root length density) in undisturbed soil cores were 9.6% higher under the NT and 8.7% higher under the CT system respectively. These results suggest that low soil disturbance under the continuous NT system may have encouraged accumulation of more root biomass in the top 100 mm depth, thus developing better soil structure. Overall, µXCT image analyses of soil cores indicated that this tillage shift affected the soil total carbon, due to the significantly higher soil-pore (i.e. pore surface area, porosity and average pore size area) and root architecture (i.e. root length density, root surface density and root biomass) measurements under the CT system.]]> Mon 16 Aug 2021 15:47:54 AEST ]]> Using environmental tracers to understand soil organic carbon and soil erosion on a steep slope hillslope in south-east Australia https://ogma.newcastle.edu.au/vital/access/ /manager/Repository/uon:51915 0.77, P < 0.0001). At this site, SOC concentration appears related to erosion and deposition patterns. Conclusion: The hillslope distribution of 137Cs and 210Pbex were very similar, indicating that both tracers were viable in this environment (r = 0.9, P < 0.0001). The different origins and half-lives of 137Cs and 210Pbex also demonstrate that the patterns of erosion and deposition are consistent at decadal time scales. Implications: The use of 210Pbex provides an alternative method for understanding erosion and deposition patterns as well as that of SOC, given that the viability of 137Cs (half-life of 30.1 years) is now questionable due to no new replenishment.]]> Fri 22 Sep 2023 12:03:04 AEST ]]>