TY JOUR TI THE ECOSYSTEMCORRELATION OF SIBERIANFOREST-STEPPE AND STEPPE ZONES IN THE HOLOCENE KW Siberia KW natural zone KW correlation KW ecosystems KW paleosoils KW spore-pollen spectra KW climate change KW Holocene JO Bulletin of KSAU AU Demidenko, G.A. PY 2014 IS PB Krasnoyarsk State Agrarian University