Abstract
It is no doubt that soils are among the Earth’s largest terrestrial reservoirs of carbon pool and hold potential for its sequestration and thus, soils can serve as potential way of mitigating the ever-increasing atmospheric CO2 concentration. However, the stability and flux of soil organic carbon are affected in response to changes that are being driven by forms of environmental and anthropogenic factors. Therefore, to establish carbon sequestration potential of soils, an in-depth scientific evaluation that would provide mapping of and speciation of carbon chemical forms, as well as factors influencing the persistence of carbon in soils are key to the process which are beyond quantitative measurements that are conventionally implemented under different land use and/or soil management. This involves soil chemistry, physics, biology, and microbiology. Hence, this short review communication highlights portions of soil chemistry and physics as well as soil biology and microbiology that have not been given attention in determining and/or underpinning decisions on carbon sequestration potential of soils.
Highlights
In response to reduce atmospheric CO2 concentration over the coming years, carbon sequestration potential of soils has been identified as a priority in climate change mitigation strategy (Jackson et al, 2017; Stockmann et al, 2013)
The stability and flux of soil organic carbon are affected in response to changes that are being driven by forms of environmental and anthropogenic factors
To establish carbon sequestration potential of soils, an in-depth scientific evaluation that would provide mapping of and speciation of carbon chemical forms, as well as factors influencing the persistence of carbon in soils are key to the process which are beyond quantitative measurements that are conventionally implemented under different land use and/or soil management
Summary
In response to reduce atmospheric CO2 concentration over the coming years, carbon sequestration potential of soils has been identified as a priority in climate change mitigation strategy (Jackson et al, 2017; Stockmann et al, 2013). The idea was initiated from the soil historical storage capacity of carbon (C), since carbon reservoirs in soil (ca. 2344 Gt in the surface and 3 m downward) exceed those combined all together both in the atmosphere (850 Gt) and biotic
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