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National Repository of Grey Literature 4 records found  Search took 0.00 seconds. 
Různé způsoby stanovení střední tloušťky a jejich vliv na výši zásoby porostu stanovenou metodou jednotných objemových křivek
 Otta, Jiří
It was detected that different ways of the mean diameter have no influence on the stand volume, which was estimated by the method of uniform volume curves. Field works were situated in property of town Planá in Pilsen region. The stand volume of thirteen stands in maturity age (more than 3 hectares area of stands, management set of stands 433, forest type 3K3) was estimated during field works. These volumes were estimated for each tree species and whole stand by the method of uniform volume curves and also for comparison by the method of volume tables. Four ways of the determining the mean diameter (Weiss´s, quadratic and two modifications by the Sedmák et al., 2015) were compared. There were not detected any statistical differences after data analysis. It can be stated that different ways of the mean diameter determining have no effect for the estimation of tree species volume and stand volume estimated by the method of uniform volume curves.
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Kontrukce lokálních objemových tabulek pro borovici lesní na LS Třeboň
 Dvořák, Daniel
The purpose of this thesis is to create volume tables for Scots pine (Pinus sylvestris L.) in Forest Service Třeboň which is an organizational unit of Lesy České republiky, s.p. (state enterprise). Data for this paper were gathered from more than 250 trees that were measured in the field. DendroScanner program that can be used to form volume tables based on tree photographs combined with data measured in the field was used for this analysis (non-destructive method). According to the Czech forest ecosystem classification system, data were measured in six sets of forest types (SLT) and laser range-finder was used alongside other mechanic tools on the majority of Forest Service area. The accuracy of the data was verified by comparing it to a control set of lying trees (destructive method). The results of this paper are volume tables merged together for five SLT (supplemented by three additional tables) and independent tables designed for a 0M type. These tables are specified by a significantly higher stock of timber in comparison to traditional ones made by ÚLT.
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Posouzení přesnosti metod zjišťování zásob v závislosti na vybraných faktorech
 Čech, Zbyněk
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Porovnání přesnosti a praktické využitelnosti vybraných metod zjišťování zásoby porostů
 Houska, Petr
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