Survival Rate of Seedlings with Closed Root System in Forest-Steppe Regions of Transbaikalia
DOI:
https://doi.org/10.37482/0536-1036-2026-2-59-72Keywords:
artificial reforestation, Scots pine, Pinus sylvestris L., fire-disturbed areas, forest crops, seedlings with a closed root system, survival rate, seedling survival, forest-steppe areas of the Trans-Baikal TerritoryAbstract
The restoration of forests damaged by fires in the context of cyclical climate fluctuations is an urgent task for the forestry sector. The aim of the study is to independently assess the results of technical acceptance and inventory of the condition of Scots pine (Pinus sylvestris L.) forest plantations with a closed root system in pyrogenically disturbed areas for 2022–2023. The main objective is to study the survival rate of pine forest plantations depending on various natural and climatic conditions and planting time, as well as to analyze the effectiveness of compensatory reforestation with seedlings with a closed root system in the conditions of the Trans-Baikal Territory. The object of the study was forestry areas that, according to the ecological-phytocenotic zoning, belong to a single district: southern taiga and subtaiga forests and forest-steppes with warm and dry, as well as insufficiently humid habitats were combined. Special attention was paid to determining the initial planting density and survival rate of forest crops. During the survey of forest cultivation areas, a significant loss of seedlings was visually noted already in the first year after planting. The height of the part of the trunk covered with soil above the soil surface averaged from 3 to 12 cm, and to the root collar located below (in the soil) – 13–15 cm. The use of the technology of planting in the furrow wall is not always productive – the top layer of soil crumbles and the seedling is covered with sand. Mechanical damage to the apical buds leads to drying out and complete death of the planting material. In the conditions of the Trans-Baikal Territory, it is recommended to consider the possibility of carrying out forest planting work with seedlings with a closed root system in the late spring period, as well as from the 2nd ten days of July, and not to carry out planting from the end of September. A preliminary independent assessment has shown that natural and anthropogenic factors affect the survival rate of forest crops.
Acknowledgements: The work was carried out within the framework of the state assignment of the Institute of Natural Resources, Ecology and Cryology of the Siberian Branch of the Russian Academy of Sciences, with the financial support of the Ministry of Education and Science of the Russian Federation.
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