Zeman M.,Brandys nad Labem
Zpravy Lesnickeho Vyzkumu | Year: 2010
Since the 1960s permanent sample plots háve been established in forest stands of the Czech Republic. They are an extensive resource of information about the long-term development of the forest stands. Mensurational data, necessary for the calculation of basic stand characteristics, are measured on these sample plots. For this purpose it is necessary to use appropriate mathematic models of the stand height curves. The stand height curve expresses the relationship between the breast-height diameter and the height of the tree. This article describes the calculation methods and procedures for the automation of height stand curves and some related knowledge.
Pulkrab K.,Czech University of Life Sciences |
Sloup R.,Czech University of Life Sciences |
Sloup M.,Brandys nad Labem |
Bukacek J.,Skolni lesni podnik
Zpravy Lesnickeho Vyzkumu | Year: 2011
The objective of the presented analysis is the calculation of the potential amount of direct costs of forest protection against insect pests, game damage and weeds. The calculation is based on typology inputs and optimal economic measures of silvicultural operations. Total direct costs of forest protection sorted by forest types range from 1,800 to 112,400 CZK within the rotation period, the highest being in the stands with the most intensive management. From the presented results it is evident that the highest costs of forest protection are achieved in stands with the highest intensity of management, followed by game damage costs and by costs of protection against weeds. The costs of protection against insect pests are the lowest.
Mikeska M.,Brandys nad Labem |
Mikeska M.,Czech University of Life Sciences |
Prausova R.,University of Hradec Kralove
Zpravy Lesnickeho Vyzkumu | Year: 2013
When revising the forest typology mapping of the Forest Management Institute (Brandýs nad Labem, Czech Republic), we found out that it is necessary to determine a new category in forest typology system, which would register wetland alder forests growing in the soil type of histosol, i.e. sites of peat and fen alder forests. In the edaphic category R-peat of the ecological series, the new ecosite 1R-peat alder forests completes current peat spruce forests and peat pine forests. Most of the peat alder forests have been so far ranked into the ecosite of wetland alder forests or peat spruce forests. We explored 4 model plots, and we present their phytocenological releves and laboratory soil sample analyses from soil pits. The new ecosite we established comes under the target management set of stands 29-management of alder sites in waterlogged soils.
Kucera M.,Brandys nad Labem
Acta Universitatis Agriculturae et Silviculturae Mendelianae Brunensis | Year: 2010
The article deals with the land categorization with special focus on the definition of category FOREST in the National Forest Inventory of the Czech Republic (NFI CR). Definitions of land categories used in the first cycle of forest inventory in 2001-2004 are evaluated. The first task is to assess the appropriateness of existing land categorization and definition of category FOREST in terms of suitability of used parameters defining individual categories and their values. Their compatibility with international definitions of category FOREST is also assessed. The second task is, based on data from the first cycle of NFI CR, to calculate the area of category FOREST according to the international definition of European National Forest Inventory Network (ENFIN) and to determine whether the area of category FOREST is the same or varies from the area according to the definition FOREST defined in NFI CR. In the first part there is a list of used land classifications in the Czech Republic and there are also described used international classifications. Land categorization and definitions according ENFIN are presented. Further the parameters are chosen in the national definition of NFI CR, which are compared with analogous parameters defined by ENFIN, indicating differences. Subsequently, the area of category FOREST is calculated according to the parameters of national definition and ENFIN definition. Finally, suggestions are given for the land classification into categories for the second cycle of NFI CR, including the appropriate parameters and their values for the definition of category FOREST. Possible ways of their implementation into the methodology of NFI CR are listed.