TY JOUR TI Humus balance as a key regulator of differential rent of peculiarly valuable agricultural land and an instrument to prevent its degradation KW land use KW soil degradation KW economic regulation KW arable lands KW humus balance KW especially valuable lands KW rational land use JO INTERNATIONAL AGRICULTURAL JOURNAL AU Nosov, S.I. AU Svintsova, T.Y. AU Ginzburg, M.E. AU Vershinin, V.V. AU Bondarev, B.E. PY 2026 IS 0 PB Electronic science