Methods of remote measurement and modeling of stem profiles to evatuate their assortment and quality structure
Journal Title: Лісівництво і агролісомеліорація - Year 2014, Vol 124, Issue
Abstract
The usage of programming software Field-Map to establish commodity and assortment-quality structure on cutting areas without logging model trees is discussed. Mathematical model forming the trunk is calculated on the base of distance measuring diameter. Building generatrix of stem trunk conducted using non-linear regression equation by assessing the unknown parameters (i, p, q) model. Based on the actual shape of the stem, this feature describes the lower, middle and upper parts of the longitudinal profile of a tree based on the differential equation. Alignment was performed using the Riemer-Gadow-Sloboda, where the parameters i, p, q calculated by the formulas. The value of assortment volumes calculated using tables of State Standard GOST 2708-75, the formula of finite cross section and software Field-Map Stem Analyst. The difference observed in the calculation of the assortment volumes is due to the peculiarities of form at the bottom part of the stem. In bottom part of the stem the volume set using tables of State Standard GOST 2708-75 is usually underestimate, while using the formula of finite cross section gives somewhat overestimate results. In the middle part of the stem the deviation in assortment volumes is small. Application of programming software Field-Map is feasible and promising for the assessment of forest resources in oak stands, since it allows to define assortment-quality stand structure without cutting of model trees and perform calculations considering different scenarios of assortment for consumer demands for wood. In further research it is necessary to determine the features of assortment-quality structure of oak stands taking into account possible hidden defects of stems. Calculations of volume assortments using the tables of State Standard GOST 2708-75, the formula of finite cross section, and generatrix of stem showed that the total difference in assortments’ volume determined by different methods is about 1%.
Authors and Affiliations
O. Slysh, V. Solodovnik, M. Buksha
Keywords
Related Articles
- EP ID EP180764
- DOI -
- Views 135
- Downloads 0
Population dynamics and current status of fur animals resources in Transcarpathian region
Population dynamics and the current status of fur animals were studied in the Transcarpathian administrative region. A brief systematic review and analysis of quantitative parameters are presented for the last 10 years....
Assessment of genetic reserves and plus trees of Scots pine current state in the State Enterprise "Balakliyske Forestry" of Kharkov region
The current state of genetic reserve of Scots pine as well as plus trees in this stand was defined in the State Enterprise "Balakleysky LH" of Kharkov region. The changes that have occurred in the stand since the grantin...
Hydrological role of forest cover of Precarpathian region
Annual parameters of components of water balance, rain flooding, spring floods and ice phenomena on the columbines of Precarpathian region are characterized with forest cover change from 21 to 59 percent. Its influence o...
Influence of weeding on condition of self-seedings of Quercus robur L. in fresh maple&lime oak forest
Influence of weeding on density and height of self-seedlings of Quercus robur L. was studied in fresh maple&lime oak forest in the SE "Vovchansk Forest Economy " in the plot of forest plantations and under forest cover....
Effect of presowing seed preparation methods on growth and yield of Larix decidua Mill. planting material
Nine options for larch seeds preparation for sowing, their impact on appearance of seedlings, growth of planting material and its quantity were analysed. It was found that on sandy soils of the West Polissya annual larch...