Factors affecting the forest soils carbon concentration and stock
A variety of factors will affect the amount and concentration of SOC in forest soils. For example, climate has a pronounced effect on SOC concentration. Important climatic factors include precipitation, poten- tial evapotranspiration (PET) and the ratio between PET and annual precipitation also known as the PET ratio. For any given rate of annual precipitation, SOC storage increases with a decreasing PET ratio (Post et al., 1982). In addition, there are numerous other soil and landscape factors that also affect SOC stock within forests (Wilcox et al., 2002). Prichard et al. (2000)