Arguable theories about the eternity of steppes and ample opportunities to create forest ecosystems by reclamation of Ukainian steppe zone
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A. Travleev [1] ; N. Belova [1]
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[1] U.E. Dnepropetrovsk, Ukraine
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- Localización: El Cuaternario Ibérico. Investigación en el s. XXI: VIII Reunión de Cuaternario Ibérico (Sevilla - La Rinconada 2013) / coord. por Rafael Baena Escudero, José Juan Fernández Caro, Inmaculada Guerrero Amador, 2013, ISBN 978-84-695-8601-3, págs. 276-277
- Idioma: inglés
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Resumen
During many year geobotanists, soil scientists and even geologists tried to decide the following questions: were our steppes covered with forests?. Could a wood species grow in steppe?. Even at present there are some ‘experts’ who are ready to discredit the forestation and necessary arrangement of forest shelter belts in steppe regions.. Dnipropetrovsk soil-geobotanical school came to the conclusion that inside the chernozem zone forests grew, grow and will grow in steppe. Micromorpholodgy of pleistocene and postpleistocene soils of Ukraine was examined by N. Belova and others authors . During wolstonian stage glaciation Ukraine and Russia the ice went down upon the valleys of the river Don and Dnieper. In the Dnieper maximum glaciation period the wood polen is shown by pine and birch, a small quantity of firtree polen is also appeared. Williams (1948) contended that in chernozem region the forest vegetation preceded the steppe vegetation. All covered with glaciers areas go through the path of development of vegetation, soil and climate in the following zonal sequence: tundra–forest–steppe–desert.