Journal of Forest Science, 2017 (vol. 63), issue 9
Innovative approaches in forest management - the application of a business model to designing a small-scale forestry strategyOriginal Paper
Richard PEK, Marcel RIEDL, Vilém JARSKÝ
J. For. Sci., 2017, 63(9):393-400 | DOI: 10.17221/17/2017-JFS 
The strong market competition forces forest owners to find innovative approaches to forest management, and business models are becoming integral parts of successful innovations and business strategies. This paper deals with the applicability of a business model (as an innovation tool) for small forest owners. The main objectives were to design a business model applicable in the forestry sector and to find the innovative business alternatives for the small-scale forest owner reflecting the local situation (in a case study in the Czech Republic). The extended business model CANVAS was used. The embedded data was evaluated on the software developed at...
Evaluation of survival and growth of Picea abies (L.) H. Karst. and Picea obovata Ledeb. provenances in the north of RussiaOriginal Paper
Elena N. NAKVASINA, Nadezhda A. DEMINA, Nadezhda A. PROZHERINA
J. For. Sci., 2017, 63(9):401-407 | DOI: 10.17221/74/2017-JFS
Adaptation variability and ecological plasticity in the "genotype-environment" system of 22 provenances of Picea abies (Linnaeus) H. Karsten, Picea obovata (von Ledebour) and their introgressive hybrids growing within the Russian Plain were studied. Provenances grow in provenance trials located in the Arkhangelsk, Vologda Regions, and Komi Republic. For assessment of provenances in the "genotype-environment" system, the ranking method was used. Based on a complex ranking index (survival, diameter, height) two local areas of the most adaptive geographic races of P. abies, P. obovata and...
Effects of nanoparticle treatments on propagation of Prunus mahaleb L. by seedOriginal Paper
Gholam Reza GOODARZI, Vahide PAYAM NOOR, Fatemeh AHMADLOO
J. For. Sci., 2017, 63(9):408-416 | DOI: 10.17221/18/2017-JFS
We examined the effects of nanoparticles (NPs) of TiO2 and ZnO at 0.5, 1, 2 or 3% concentrations for 10, 20, and 30 min in stratified seeds of Prunus mahaleb Linnaeus. Then, seedlings produced were irrigated to field capacity with NP solutions at control, 1, 5, and 10% concentration for 7 months in the greenhouse conditions. Treating seeds at 1% concentrations of TiO2-NPs for 20 min resulted in the highest germination percentage (65%) and at concentrations of 3% for 30 min it showed the lowest germination percentage (13%). The highest total seedling height was obtained after exposure of seeds to 0.5% TiO2-NPs...
Effects of gibberellic acid and storage temperature on the germination of hawthorn seedsOriginal Paper
Fatemeh AHMADLOO, Masoud TABARI KOUCHAKSARAEI, Gholam Reza GOODARZI, Azadeh SALEHI
J. For. Sci., 2017, 63(9):417-424 | DOI: 10.17221/24/2017-JFS
This study investigated methods to overcome seed dormancy in Crataegus pseudoheterophylla Pojarkova seeds. Seeds with and without endocarps were treated with gibberellic acid (GA3) at different concentrations and four storage temperatures. Then they were stratified in an alternate temperature regime. The amount of absorbed water in seeds with endocarps was monitored by measuring the fresh weight of seeds for 0, 24, 48, 72, and 96 h of imbibition. The electrical conductivity (EC) and the percentage of water uptake by seeds stored for 12 months at laboratory temperature, in a refrigerator, in a freezer, and in freeze-thaw conditions...
Modelling and mapping of soil damage caused by harvesting in Caspian forests (Iran) using CART and RF data mining techniquesOriginal Paper
Saeid SHABANI
J. For. Sci., 2017, 63(9):425-432 | DOI: 10.17221/125/2016-JFS
Controlling the soil damage caused by forest harvesting has a key role in forest management due to its effect on forest dynamics and productivity, mainly through modifying the physical, mechanical, and hydrological context of soil. This study was conducted to evaluate the soil damage susceptibility in one of the Caspian forests, Iran. For this purpose, two data mining techniques including classification and regression tree (CART) and random forest (RF) were applied. A total of 224 soil damage locations were identified primarily from field surveys. Then, 10 conditioning variables were produced in GIS. For model performance, the outputs of the analyses...
Estimation of diameter at breast height from mobile laser scanning data collected under a heavy forest canopyOriginal Paper
Juraj ČERŇAVA, Ján TUČEK, Milan KOREŇ, Martin MOKROŠ
J. For. Sci., 2017, 63(9):433-441 | DOI: 10.17221/28/2017-JFS
Mobile laser scanning (MLS) is time-efficient technology of geospatial data collection that proved its ability to provide accurate measurements in many fields. Mobile innovation of the terrestrial laser scanning has a potential to collect forest inventory data on a tree level from large plots in a short time. Valuable data, collected using mobile mapping system (MMS), becomes very difficult to process when Global Navigation Satellite System (GNSS) outages become too long. A heavy forest canopy blocking the GNSS signal and limited accessibility can make mobile mapping very difficult. This paper presents processing of data collected by MMS under a heavy...