Soil Carbon Sequestration and the Greenhouse Effect

发表于：SSSA special publication series · 年份：2009 · DOI：10.2136/sssaspecpub57.2ed · 被引用次数：299 · 研究领域：Soil Carbon and Nitrogen Dynamics、Bioenergy crop production and management、Peatlands and Wetlands Ecology

It’s hard to believe that the Greenhouse Effect is a concept that is now more than a century old, but today the observed and predicted climate changes attributed to the anthropogenic increases in atmospheric CO2 more urgently repeat the question, what can be done? The strategy of soil carbon sequestration is gaining importance because of the growing need to offset the rapidly increasing atmospheric concentration of CO2. The term soil carbon sequestration implies that the total C pool in the soil profile can be increased through managerial interventions aimed at transferring atmospheric CO2 to the soil C pool by moderating organic and/or inorganic transformations, either through humification of photosynthetic biomass or formation of secondary carbonates. The transfer of soil C to the atmospheric pool has created a C deficit in world soils, the so-called “C sink.” This C sink capacity can be filled by conversion to a restorative land use (e.g., reforestation, perennial vegetation cover) and adoption of recommended management practices that create positive C and nutrient budgets, as well as favorable soil temperate and moisture regimes. Over and above its potential to offset anthropogenic emissions, soil C sequestration has numerous benefits related to ecosystem services. Important among these are food security, water quality, and biodiversity. This volume is the second edition of SSSA Special Publication 57, first published in 2001. The present edition is an update of the conce...