Biochar prepared from the waste wood of white lead trees through
slow pyrolysis is an acid-neutralizing material for highly weathered
soils, and is a potential source of nutrients. The persistent characteristics
of the biochar ensure long-term benefits for the soils. Our incubation
experiments showed that wood biochar not only improved the chemical
and biological properties of the soil, including increasing soil pH,
CEC, BS, and microbial activity, but also improved the physical properties
of the soil, such as Bd, Ksat, aggregate stability, and erosion resistance.
These results suggest that the addition of wood biochar effectively improved
poor soil characteristics in highly-weathered soil, and reduced
soil losses. The results of this study could be used to avoid rapid soil degradation
in subtropical and tropical regions.