Experience, Status and Prospects of Рinus sylvestris L. Planting in the Steppe Pine Forests of Eastern Transbaikalia
2018
Makarov, V.P. | Zima, Yu.V. | Malykh, O.F. | Banshchikova, E.A.
The paper presents the studies of Рinus sylvestris L. plantations in the Tsasucheysky and Tsyrik-Narasun steppe pine forests in the southeast of the Transbaikalian Territory in the context of high aridity of the area - an increase in the average annual air temperature, a decrease in the annual amount of precipitation, and frequent steppe and forest fires. Based on the research of V.V. Ogievsky and P.A. Bondar’, the authors consider the experience and history of forest planting in the Trans-Baikal Territory in the 60-70's of the 20th century. Optimal terms, methods of soil preparation, planting and the possibility of planting under certain conditions by direct drilling are established. A modern assessment of pine cultures created mainly in the 70s in the last century in the steppe pine forests is given. They are characterized by low conservation (2...18 %) associated with forest fires and precipitation deficit. Natural regeneration of pine is assessed as satisfactory in plots with a poor grass cover and treated soil. Healthy trees predominate in the stands in most of the studied areas. Large creeping fires significantly affect the decline in the living conditions of pine. The dynamics of growth of pine plantations is mainly related to the average annual total precipitation, air temperature of the first half of the vegetation period, density of planting and the influence of fires. To preserve steppe pine forests in conditions of increasing aridity of the territory, the authors recommend to strengthen preventive measures for steppe and forest fires, to promote natural regeneration of pine, and to improve methods of creating forest cultures.
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