Showing results for: Carbon sinks and sequestration
What is the latest science on soil's ability to pull carbon pollution out of the atmosphere? Breakthrough Strategies hosted a webinar on April 24 on the Technical Potential of Soil Carbon Sequestration. It featured three of the world’s leading experts on strategies for drawing carbon pollution out of the atmosphere and storing it in soils: Keith Paustian, Jean-François Soussana, and Eric Toensmeier.
This research brings together data from 389 field trials to determine how the root and shoot biomass, and carbon (C) stocks of major crops correlate to soil C in different environmental conditions. The analysis found all crops allocated more C to their shoots than roots. The greatest C allocation to roots was in grasses (which also had the highest plant biomass production).
This paper, published in the journal Science, aims to establish a detailed “roadmap” for meeting the Paris climate goal. It provides not only a scenario for the CO2 emissions reductions needed but places attention on the many different policy actions needed to stay below 2°C warming. One of three main focus areas is agriculture and land use related emissions.
This perspective article exposes and explains uncertainties in our historical calculations of carbon fluxes associated with land use and land cover change, and uses comparisons between dynamic global vegetation models (DGVMs) to estimate the effects of these uncertainties on historical, current and future assessments of carbon fluxes between the land and air.
The Farm Carbon Cutting Toolkit (FCCT) has launched a crowdfunding campaign to support UK farmers in adopting Carbon Farming techniques. This approach aims to minimise carbon emissions and maximise carbon sequestration on farms, particularly in soils.
The FCRN’s Tara Garnett gave a short presentation at an event held in November by the Sustainable Food Trust. The question posed was ‘Do livestock hold the key to a healthy planet and population?’
This paper in Nature addresses the question of whether a warming planet leads to increased CO2 emissions through heightened activity by soil microbes. It finds that this positive feedback mechanism exists and is likely to be of great importance in the future global carbon budget.
This paper presents the results of a modelling exercise that aimed to identify low emissions pathways for a growing global livestock sector. This article uses 6 case studies, modelled in the Global Livestock Environmental Assessment Model developed by FAO, to illustrate the climate change mitigation potential of livestock achievable through changes in feeding, breeding and husbandry as well as grazing management to increase soil carbon sequestration.
Recent assessments have strongly suggested that meeting the widely agreed target of limiting global warming to less than 2°C will require the deployment of substantial carbon sinks in addition to measures to curb greenhouse gas (GHG) emissions. This perspective article examines the latest research and thinking on the ability of agricultural soil management to reduce GHG emissions and promote soils as carbon sinks, and the practical feasibility of implementing available soil management practices
This study compares real world observations of the age of carbon in soils, to soil carbon’s age as represented in earth system models that are used to make climate change projections. It then explores the implications of the results, by modelling expected future levels of carbon storage in global soils, occurring in response to increasing levels of atmospheric carbon dioxide. To illustrate the difference, modelled increases in soil carbon storage are contrasted both before and after updating earth systems models to reflect these real-world observations.
Among climate mitigation options, afforestation offers its carbon sequestration potential at a moderate cost, and therefore might be used at a large scale in the future. As suitable land is limited though, competition of land for forest with crop and pastureland might drive food prices up.
Strong demand for vegetable oil has led to a boom in the Indonesian and Malaysian palm oil industries since 1990. Typically planted in extremely large monoculture plantations, the crop has been implicated in biodiversity loss and human rights issues.
Researchers in California conducted a life cycle assessment to model the climate change mitigation potential of consuming produce grown in household vegetable gardens as opposed to those from stores.