Burdukovskii M.L., Candidate O.S.(.S.R.L.O.S.S.A.S.E.
Bulletin of higher educational institutions. North Caucasus region. Natural sciences 2024; (2): 66-71
The soils of the southern Far East are characterized by low levels of mobile phosphorus forms with an elevated concentration of its residual forms. The aim of this work is to study the dynamics of mobile phosphorus forms and their stocks in abandoned and anthropogenically transformed dark-humus podbels in Primorsky region of Russia. The study was conducted on abandoned agricultural fields (15, 20, 35, and 80 years after abandonment). As a reference site, we used samples from arable land. During the study, it was established that predominantly mobile phosphorus forms accumulated in the upper plow layer, especially in the soils of arable land. Overall, the content of mobile phosphorus forms in the studied soils is assessed as very low. Throughout the examined postagrogenic development, there was a decrease in the stocks of mobile phosphorus forms throughout the soil profile.
