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The growth course properties of grey alder (Alnus incana (L.) Moench) on different site types are still insufficiently researched, especially, if to compare the forest and abandoned agricultural lands. Due to the species relatively high prevalence in private forest areas in Latvia, which according to the forestry statistics data, equaled 11% in 2023, it has crucial significance to the economy. The paper analyses 40-year-old grey alder stands on abandoned agricultural land, forest land, and forests along the rivers...

The forests of south-western part of Zemgale Plain in Latvia are characterized by Scots pine (Pinus sylvestris L.) stands on fertile, nutrient rich soils. The existing information about these sites suggests of the calcium carbonate rich loamy sand soils formed by moraine. The Scots pine stands in area of Tervete National Park reach age of 260 years. The oldest and biggest trees reach considerable dimensions – up to 70 cm in diameter and height of 47 m, thus exceeding the country's average indices. These are the ol...

By studying the dendrometrical indices and vitality of introduced woody plants grown in an arboretum, it is possible to conclude about the success of their adaptation in country's climatic conditions. Growth indicators of introduced woody plants growing in Latvian arboretums can be used to study the introduction and adaptation of woody plants, in accordance with the influence of climatic conditions. The aim of the work was to describe the taxonomic composition and quality of the trees of the Arboretum Lacupite. Th...

Monumental trees are characterized by extraordinary dimensions, long life, fantastic visual effects, and a socio-cultural values in the context of local history, folklore and mystical believes of the people living around. Taxus baccata L., commonly known as yew, English yew or, European yew, is an evergreen tree or shrub and it is considered to be one of the most distinguished monumental trees identified in the world. In this study were determined and recorded the monumental common yew trees distributed in the cen...

The sessile oak is the widest spread species of all autochthonous oaks species in Romania, forming a lower level of vegetation. The purpose of this study is to analyze the variability of leaf nutrients, as well as of soil nutrients, for two sessile oak stands situated under different forest site conditions. These two stands are located on the same type of soil: luvisol. As such, four soil profiles were realized for analyzing soil properties. Leaves samples were collected from twenty sessile oak trees, during three...

The set complex of methods for effectuation of the ecological monitoring of the anthropogenic impact areas as well as undisturbed was worked out by the authors. This method has been tested from 1997 to 2016 in Kostomukshsky State Nature Reserve. The typical part of northern forests of the European part of Russia and Rangifer tarandus fennicus is being protected. The reserve is part of the Finnish-Russian Friendship nature reserve. The Kostomuksha Mining and Processing Plant, the city of Kostomuksha, transboundary ...

The aim of this study was experimental assessing the emission of greenhouse gasses (CO2, CH4) from decomposed coarse woody debris in northern boreal forests of Siberia, where the main forest-forming species is larch (Larix gmelinii (Rupr.) Rupr.). Logs samples were collected in northern boreal larch forests of Central Evenkia (64пїЅN, 100пїЅE) at different stages of decomposition and placed in gas-tight boxes. Gas samples were measured in dynamics: at the beginning of the experiment and after 3 hour, 24 hours, aft...

Every year wildfires during the dry and hot summer season cause serious damage in agro-forest systems in Mediterranean area. Preventive measures are the most important issue in order to ensure agricultural production and sustainable tourism. One of preventive measures is planting of vegetation fire protection belts by using a low flammable plant species. Among low flammable plant species carob tree (Ceratonia siliqua L., family of Fabaceae, subfamily of Caesalpinioideae) have special position. The carob tree grows...

Forest resource is the most important natural resource. The Leningrad Region is one of the most developed subjects of the Russian Federation according to economic indicators. Logging, wood processing and timber exports are carried out in the region due to the reserves of forest resources. The consumption of forest resources should not exceed the productive natural forces. Improving forest management, ensuring rational use of forests, maintaining the ecological potential of the forest fund are essential aims. The s...