Hence, while the most dynamic fraction of the soil is well represented, the most stable fraction is remarkably underrated.
Furthermore, the stable fraction of the soil organic matter (SOM) was extracted with 10%H2O2and14C-dated14C-dated
At the lower sites, where frequent bush fires often destroyed a part of the stable fraction, the stable SOM fraction had a maximum age of 1 ky.
The heavy, stable fraction that accounted for 44% of SOC concentration was in the SOC-clay aggregates, which contain the largest amounts of N, P, K, Kdis, and the highest CEC.
However, the presence of wetland plants also transformed metals (Pb and Zn) to a more stable fraction (residual), leading to a lower potential metal bioavailability and leaching process in the long run.
Stable fraction (SF) accounts for 90% of the total organic carbon (TOC) in terms of particle size distribution [6].
A larger value of w gives more weight to the initial composition, while a smaller value of w gives more weight to the ultimate stable fraction.
Compared to HV, WBC count increased in BI and BD for PMN and Mo, with stable fraction of Mo16+ and 16-.
13It appears that an increase in the application success probability since the mid-1980s has mainly contributed to a stable fraction of denied applicants.
Although LF is commonly referred to a plant-like and less stable fraction with high OC concentration (Gregorich et al. 2003), HF is more stable and high-density organo-mineral fractions having lower C concentrations (Golchin et al. 1995a, b).
Other studies have shown that MOC is more sensitive to land use management for example [21] working in the Kenyan central Highlands showed that different potato cropping systems affect the stable fraction more than the labile one.
