Article Higlights Challenges of Soil Carbon Sequestration as Climate Mitigation Tool

Two University of California, Berkeley, scientists writing in Proceedings of the National Academy of Sciences caution against over-reliance on soil carbon sequestration as a tool to mitigate climate change. They point out that although changed agricultural techniques could restore significant amounts of carbon to soils, these changes may not be politically or economically possible on the scale that would be necessary to offset greenhouse-gas emissions. The authors outline cultural, economic, and physical barriers to using soil as a major carbon sink, including the need to secure cooperation from diverse private landowners, lack of technical expertise, and declining sequestration ability of soils as the climate warms.