soil carbon sequestration to mitigate climate change

With climate change a political and scientific priority, scrutiny is growing of soil’s potential role in capturing and storing carbon. Carbon sequestration, the long-term storage of carbon in plants, soils, geologic formations, and the ocean. In addition to helping mitigate climate change as resulted from increased soil C storage, use of recycled organic materials into soils results in a range of important environmental benefits (Lal, 2002; Smith, 2008). Estimates of the total potential of C sequestration in world soils vary widely from a low of 0.4 to 0.6 Gt C/year to a high of 0.6 to 1.2 Gt C/year . In response to concerns about climate change resulting from increased carbon dioxide concentrations in the atmosphere, interest has been drawn to geoengineering techniques such as carbon capture and storage. Please see: Soils can help mitigate CO2 emissions, despite the challenges - May 14, 2019; Correction for Amundson and Biardeau, Opinion: Soil carbon sequestration is an elusive climate mitigation tool - June 17, 2019 As a result, farmers may improve soil health and mitigate climate change through carbon sequestration by considering the form of nitrogen in soil amendments, she said. This article has a Correction and a Letter. As a result, farmers may improve soil health and mitigate climate change through carbon sequestration by considering the form of nitrogen in soil amendments, she said. Soil carbon sequestration techniques are already in widespread use, but they would need to be scaled up substantially to achieve significant climate benefits. The rate of SOC sequestration, ranging from 100 to 1000 kg ha −1 year −1, depends on climate, soil type, and site-specific management. The term ‘carbon sequestration’ is commonly used to describe any increase in soil organic carbon (SOC) content caused by a change in land management, with the implication that increased soil carbon (C) storage mitigates climate change. Total potential of SOC sequestration in the United States of 144 to 432 Mt year −1 (288 Mt year −1 ) comprises 45 to 98 Mt in cropland, 13 to 70 Mt in grazing land, and 25 to 102 Mt in forestland. These benefits include: Thus, the potential is finite in capacity and time. The alliance supported the passage of a bipartisan Senate bill, the Growing Climate Solutions Act, for USDA to provide information about carbon sequestration.It would also certify so-called technical assistance providers who work with farmers on carbon-reduction projects, and certify independent agents who would verify lower carbon emissions as well as carbon sequestration in the soil. Soil Carbon Sequestration for Mitigating Climate Change. Without healthier soils and a sustainable land and soil management, we cannot tackle the climate crisis, produce enough food and adapt to a changing climate. Climate change has a major impact on soil, and changes in land use and soil can either accelerate or slow down climate change. Governance COnsiderations Technical assistance : good technical assistance can help farmers, ranchers, and land managers learn techniques that are most suitable for their land. The study, “Organo-organic and Organo-mineral Interfaces in Soil at the Nanometer Scale,” was published on November 30, 2020, in Nature Communications.. At that resolution, the researchers showed – for the first time – that soil carbon interacts with both minerals and other forms of carbon from organic materials, such as bacterial cell walls and microbial byproducts. Sustainable soil carbon sequestration practices need to be rapidly scaled up and implemented to contribute to climate change mitigation.

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