TY JOUR TI Determination of the shannon biodiversity index of plant communities formed by edificatory trees using the example of forests in the north of western Siberia KW JO Bulletin of Nizhnevartovsk State University AU Tsibulsky, V.. AU Arefiev, S.. AU Novikov, V.. AU Soloviev, I.. AU Govorkov, D.. PY 2021 IS PB Nizhnevartovsk State University