<abstract xmlns="http://www.w3.org/1999/xhtml">The purpose of the present study was to convey to the reader the method and application of the Finnish Multi-Source National Forest Inventory (MS-NFI) that was devised in the Finnish Forest Research Institute. The study area concerned is Stołowe Mountains National Park, which is located in the south-western Poland, near the border with the Czech Republic. To accomplish the above mentioned aim, the following data have been applied: timber volume derived from field sample plots, satellite image, digital map data and digital elevation model. The Pearson correlation coefficient between independent and dependent variables has been verified. Furthermore, the non-parametric k-nearest neighbours (k-NN) technique and genetic algorithm have been used in order to estimate forest stands biomass at the pixel level. The error estimates have been obtained by leave-one-out cross-validation method. The main computed forest stands features were total and mean timber volume as well as maximum and minimum biomass occurring in the examined area. In the final step, timber volume map of the growing stock has been created.</abstract>

Eberswalde University for Sustainable Development, Faculty of Forest and Environment, Alfred-Möller-Strasse 1, 16225 Eberswalde, Germany

Warsaw University of Life Sciences, Faculty of Forestry, Department of Forest Management, Geomatics and Forest Economics, Nowoursynowska 159, 02-776 Warsaw, Poland, phone: +48791709242

Forest stands volume estimation by using Finnish Multi-Source National Forest Inventory in Stołowe Mountains National Park

<abstract xmlns="http://www.w3.org/1999/xhtml">The study on the <italic>in vitro</italic> micropropagation of <italic>Robinia pseudoacacia</italic> L. shows the possibility of the rapid increase of the vegetative progeny using organogenesis. The culture system consists of sequential use of three media, namely, the initiation medium (MS medium supplemented with 0.6 mg · l−1 6-BA (6-benzylamino-purine), 0.1 mg · l−1 NAA (naphthalene acetic acid), proliferation medium (1/2 MS medium added with 1 mg · l−1 6-BA,) and root-induction medium (1/2 MS medium fortified with 0.2 mg · l−1 NAA). The resulting micropropagated plants, fully acclimatised to an in vivo environment, did not show any visually detectable morphological variation.In addition, we investigated the genetic stability (vegetative progeny to the donor plant) of a sample of 30 plants randomly taken from ca. 1067 micropropagated plants, by using three microsatellites loci Rops 15, Rops 16, Rops 18. Our results suggest that DNA sequence variations may occur in micropropagated plants.</abstract>

Forest Research Institute, Department of Silviculture and Genetics of Forest Trees, Sękocin Stary, Braci Leśnej 3, 05-090 Raszyn, Poland, phone: +48 22 7150481

Instituto Politécnico de Coimbra, Escola Superior Agrária, Bencanta, 3045-601 Coimbra, Portugal

Micropropagation of black locust (<italic>Robinia pseudoacacia</italic> L.) and genetic stability of long term cultivated plants

<abstract xmlns="http://www.w3.org/1999/xhtml">Intensively used forest nurseries are characterised by degradation processes that lead to a drop in the quality of seedlings. The main reason of this problem is a decrease in biological soil diversity. Therefore, an attempt of nursery soil enrichment by introducing ectohumus – as compost and fresh litter – from the pine forest was carried out. The research was carried out in 2009–2011 in the Bielawy forest nursery near the city of Toruń, Poland. The objective of the study was to determine the impact of organic fertilisation (compost made up of forest humus) and mulching using fresh ectohumus on the density and community composition of Acari mites and on species composition of oribatid mites (Oribatida) in the nurseries of silver birch and Scots pine. Mites, especially oribatid mites, were treated as bioindicators of soil biological activity. Research has shown that mulching using fresh ectohumus caused a multiple increase in the density of mites, especially in saprophagous mites Oribatida. Oribatid mites were clearly more numerous in birch cultivation than in that of pine. Overall, 27 species of oribatid mites were found. Mulching resulted in a significant growth in species diversity in both cultivations. The most numerous oribatid mite in the area under the study was <italic>Oribatula tibialis</italic>. This species was present in all plots and showed clear preference for birch cultivation. <italic>Tectocepheus velatus</italic> and <italic>Oppiella nova,</italic> common and known to be present in a variety of environments, were slightly less numerous.</abstract>

UTP University of Science and Technology, Department of Zoology and Landscaping, Kordeckiego 20, 85-225 Bydgoszcz, Poland, phone: +48 52 374-94-09

UTP University of Science and Technology, Department of Land Reclamation and Agrometeorology, Bernardyńska 6, 85-029 Bydgoszcz, Poland

Impact of ectohumus application in birch and pine nurseries on the presence of soil mites (Acari), Oribatida in particular

<abstract xmlns="http://www.w3.org/1999/xhtml">The paper presents an attempt to apply measurable traits of a tree – crown projection area, crown length, diameter at breast height and tree height for classification of 135-year-old oak (<italic>Quercus</italic> L.) trees into Kraft classes. Statistical multivariate analysis was applied to reach the aim. Empirical material was collected on sample plot area of 0.75 ha, located in 135-year-old oak stand. Analysis of dimensional traits of oaks from 135-year-old stand allows quite certain classification of trees into three groups: pre-dominant, dominant and co-dominant and dominated ones. This seems to be quite promising, providing a tool for the approximation of the biosocial position of tree with no need for assessment in forest. Applied analyses do not allow distinguishing trees belonging to II and III Kraft classes. Unless the eye-estimation-based classification is completed, principal component analysis (PCA) method provided simple, provisional solution for grouping trees from 135-year-old stand into three over-mentioned groups. Discriminant analysis gives more precise results compared with PCA. In the analysed stand, the most important traits for the evaluation of biosocial position were diameter at breast height, crown projection area and height.</abstract>

Poznań University of Life Sciences, Department of Forest Management, Wojska Polskiego 71c, 60-625 Poznań, Poland

Poznań University of Life Sciences, Department of Mathematical and Statistical Methods, Wojska Polskiego 28, 60-637 Poznań, Poland, phone: +48 61 8487153

Tree crown size as a measure of tree biosocial position in 135-year-old oak (<italic>Quercus</italic> L.) stand

<abstract xmlns="http://www.w3.org/1999/xhtml">This paper presents the results of research that aims to analyse and evaluate the attractiveness of the forest landscape in the vicinity of selected motor vehicle routes that differ in terms of technical parameters, such as motorways, regional roads and local (municipal) roads. The diversity of landscape units was used as the measure of landscape attractiveness. Landscape diversity analysis allows to establish the details related to specific parts of the road and the options for configuring the road environment. These options relate to the way the forest is managed and mainly involve aspects of infrastructure and cultivation. They include activities such as afforestation work and rebuilding the species composition of forest stands. According to the research, the lower the technical class of a road, the greater is the need to take action to adapt the structural-tree stand system to meet the safety requirements of road users.</abstract>

Warsaw University of Life Sciences, Faculty of Forestry, Department of Forest Utilization, Nowoursynowska 159, 02-776 Warsaw, Poland, phone: 48 22 5939134

Warsaw University of Life Sciences, Faculty of Forestry, Department of Forest Management Planning, Geomatics and Forest Economics, Nowoursynowska 159, 02-776 Warsaw, Poland

Assessment of the forest landscape along selected motor vehicle routes

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Folia Forestalia Polonica

Volume 58 (2016): Issue 1 (March 2016)

Forest stands volume estimation by using Finnish Multi-Source National Forest Inventory in Stołowe Mountains National Park

Micropropagation of black locust (Robinia pseudoacacia L.) and genetic stability of long term cultivated plants

Impact of ectohumus application in birch and pine nurseries on the presence of soil mites (Acari), Oribatida in particular

Tree crown size as a measure of tree biosocial position in 135-year-old oak (Quercus L.) stand

Assessment of the forest landscape along selected motor vehicle routes

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