Abstract
Recently, researchers indicated great changes in the chemistry of atmosphere due to faster oxidation of soil organic carbon. The increases of greenhouse gasses especially CO2 concentration can affect climate, plant physiology, microbial activity, soil organic matter, and decomposition. Soil can be a store or source for atmospheric CO2. The amount of soil organic carbon stored in the soil or release to the atmosphere depends on net ecosystem productivity and heterotrophic respiration. Soil management systems with intensive cultivation may stimulate oxidation of old organic matter, and create the soil a source of atmospheric CO2. Similarly, almost lost 50% of organic carbon was lost due to conventional tillage systems and cultivation. Minimum tillage and no-till practices reduce oxidation of soil organic carbon and result net C gain. Thus, atmospheric CO2 can be stored in soils using these management systems. The greater level of soil organic carbon can also increase soil quality and fertility. This indicates our soils can be a greater potential to store atmospheric CO2.
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