FROM THE EXPERIENCE OF INTRODUCING MANCHURIAN WALNUT (JUGLANS MANDSHURICA MAX.) IN THE CONDITIONS OF THE SMALL POLІSSIA OF THE RIVNE REGION
Authors
N. V. Kondratiuk
Nadsluchansky Institute the National University of Water and Environmental Engineering, Berezne
V. O. Pysarenko
Nadsluchansky Institute the National University of Water and Environmental Engineering, Berezne
M. V. Semenіuk
Nadsluchansky Institute the National University of Water and Environmental Engineering, Berezne
Yu. V. Nizhalovskyi
Separate Structural Subdivision «Berezne professional college of forestry The National University of Water and Environmental Engineering», Berezne
The historical experience of introducing valuable tree species into many optimally moist types of forests in the Western Forest-Steppe is crucial for the development of forest cultures and forestry. In this regard, unique pure forest cultures of Manchurian walnut, of a plantation type, were investigated. Under the guidance of distinguished foresters of Ukraine – Vasуliі Vyshnevskyі, the chief forester of Ostroh Forest Management Unit, and Heorhii Chekhovуch, the forester of Khoryvka Forestry – a series of forestry experiments on the introduction of valuable tree species were conducted. Persian walnut (Juglans regia L.), black walnut (Juglans nigra L.), and Manchurian walnut (Juglans mandshurica Max.) were used as dominant species in creating forest cultures. The state and features of forest cultures were studied using the method of partial inventory. For this purpose, a temporary sample plot measuring 50x80 m was established, where a complete list of trees by forest elements was compiled. The dominant species in the plantation is Manchurian walnut, accompanied by oak and birch, forming a lower tier. In the upper tier, there are isolated trees of weeping birch and white poplar. However, the low stock per 1 ha and relative completeness do not allow for the differentiation of a separate tier, and the plantation is considered single-tiered. The calculation of average inventory indicators was carried out using the weighted average method through the sum of cross-sectional areas. The stock of Manchurian walnut stand was determined based on the data from the complete list of trees. The assortment of the total stock of Manchurian walnut stand was classified using current assortment tables. It was found that the plantation is characterized by low completeness and low productivity, indicating an unsuccessful forestry experiment. To optimally utilize this territory, reconstructive logging is necessary to promote the dominant species for this type of forest – common oak.
Author Biographies
N. V. Kondratiuk, Nadsluchansky Institute the National University of Water and Environmental Engineering, Berezne
Senior Lecturer
V. O. Pysarenko, Nadsluchansky Institute the National University of Water and Environmental Engineering, Berezne
Senior Lecturer
M. V. Semenіuk, Nadsluchansky Institute the National University of Water and Environmental Engineering, Berezne
Senior Lecturer
Yu. V. Nizhalovskyi, Separate Structural Subdivision «Berezne professional college of forestry The National University of Water and Environmental Engineering», Berezne
