A5018651156- Soil Carbon and Nitrogen Dynamics
- Environmental Impact and Sustainability
- Bioenergy crop production and management
- Forest Management and Policy
- Climate Change Policy and Economics
- Soil and Water Nutrient Dynamics
- Agriculture Sustainability and Environmental Impact
- Atmospheric and Environmental Gas Dynamics
- Clay minerals and soil interactions
- Biofuel production and bioconversion
- Climate change impacts on agriculture
- Pasture and Agricultural Systems
- Soil Geostatistics and Mapping
- Global Energy and Sustainability Research
- Soil and Unsaturated Flow
- Peatlands and Wetlands Ecology
- Forest ecology and management
- Conservation, Biodiversity, and Resource Management
- Forest Biomass Utilization and Management
- Plant Water Relations and Carbon Dynamics
- Energy, Environment, and Transportation Policies
- Agronomic Practices and Intercropping Systems
- Heavy metals in environment
- Photovoltaic Systems and Sustainability
- Rice Cultivation and Yield Improvement
University of New England
2016-2025
New South Wales Department of Primary Industries
2015-2024
Cambridge University Press
2016-2023
Saint Vincent Health System
2023
Heidenhain (United Kingdom)
2023
ORCID
2021
Agence internationale de l'énergie
2017-2019
Swedish Energy Agency
2018
Institute of Soil Science and Plant Cultivation
2017
Chalmers University of Technology
2016
Interactions between biochar, soil, microbes, and plant roots may occur within a short period of time after application to the soil. The extent, rates, implications these interactions, however, are far from understood. This review describes properties biochars suggests possible reactions that addition These include dissolution–precipitation, adsorption–desorption, acid–base, redox reactions. Attention is given occurring pores, interactions with roots, microorganisms, soil fauna. Examination...
Biochar properties can be significantly influenced by feedstock source and pyrolysis conditions; this warrants detailed characterisation of biochars for their application to improve soil fertility sequester carbon. We characterised 11 biochars, made from 5 feedstocks [Eucalyptus saligna wood (at 400°C 550°C both with without steam activation); E. leaves papermill sludge poultry litter cow manure (each at activation activation)] using standard or modified chemical procedures. pH values varied...
The influence of biochar on nitrogen (N) transformation processes in soil is not fully understood. This study assessed the four biochars (wood and poultry manure synthesized at 400°C, nonactivated, 550°C, activated, abbreviated as: W400, PM400, W550, PM550, respectively) nitrous oxide (N 2 O) emission N leaching from an Alfisol a Vertisol. Repacked columns were subjected to three wetting–drying (W–D) cycles achieve range water‐filled pore space (WFPS) over 5‐mo period. During first two W–D...
The health and productivity of global land resources are declining, while demand for those is increasing. aim degradation neutrality (LDN) to maintain or enhance land-based natural capital its associated ecosystem services. Scientific Conceptual Framework Land Degradation Neutrality has been developed provide a scientific approach planning, implementing monitoring LDN. Science-Policy Interface the United Nations Convention Combat Desertification (UNCCD) led development conceptual framework,...
The stability of biochar carbon (C) is the major determinant its value for long-term C sequestration in soil. A (5 year) laboratory experiment was conducted under controlled conditions using 11 biochars made from five C3 biomass feedstocks (Eucalyptus saligna wood and leaves, papermill sludge, poultry litter, cow manure) at 400 and/or 550 °C. were incubated a vertisol containing organic predominantly C4-vegetation source, total CO(2)-C associated δ(13)C periodically measured. Between 0.5%...
Biochar can influence native soil organic carbon (SOC) mineralisation through "priming effects". However, the long-term direction, persistence and extent of SOC priming by biochar remain uncertain. Using natural (13)C abundance under controlled laboratory conditions, we show that biochar-stimulated ("positive priming") caused a loss 4 to 44 mg C g(-1) over 2.3 years in clayey, unplanted (0.42% OC). Positive was greater for manure-based or 400°C biochars, cf. plant-based 550°C but trivial...
Abstract There is a clear need for transformative change in the land management and food production sectors to address global challenges of climate mitigation, adaptation, combatting degradation desertification, delivering security (referred hereafter as “land challenges”). We assess potential 40 practices these find that: Nine options deliver medium large benefits all four challenges. A further two have no estimates but other Five mitigation (>3 Gt CO 2 eq/year) without adverse impacts...
Natural carbon sinks currently absorb approximately half of the anthropogenic CO2 emitted by fossil fuel burning, cement production and land-use change. However, this airborne fraction may change in future depending on emissions scenario. An important issue developing budgets to achieve climate stabilisation targets is behaviour natural sinks, particularly under low mitigation scenarios as required meet goals Paris Agreement. A key requirement for pathways quantify effectiveness negative...
The soil carbon (C) saturation concept suggests an upper limit to the storage of organic (SOC). It is set by mechanisms that protect matter from mineralization. Biochar has capacity new C, including rhizodeposits and microbial necromass. However, decadal-scale which biochar influences molecular diversity, spatial heterogeneity, temporal changes in SOC persistence, remain unresolved. Here we show C ceiling a Ferralsol under subtropical pasture was raised second application Eucalyptus saligna...
Bioenergy aims to reduce greenhouse gas (GHG) emissions and contribute meeting global climate change mitigation targets. Nevertheless, several sustainability concerns are associated with bioenergy, especially related the impacts of using land for dedicated energy crop production. Cultivating crops can result in synergies or trade-offs between GHG emission reductions other effects depending on context-specific conditions. Using United Nations Sustainable Development Goals (SDGs) framework,...
Biofuel systems may represent a promising strategy to combat climate change by replacing fossil fuels in electricity generation and transportation. First-generation biofuels from sugar starch crops for ethanol (a gasoline substitute) oilseed biodiesel petroleum diesel have come under increasing levels of scrutiny due the uncertainty associated with estimation impacts biofuels, such as indirect effects on land use. This analysis estimates magnitude some sources: i) crop/feedstock, ii) life...