Journal of Forest Science, 2016 (vol. 62), issue 3

Relation between selected indicators of forest stand diversity and quality of timber production in managed Central European forestsOriginal Paper

J. Merganič, K. Merganičová, R. Marušák, L. Tipmann, L. Šálek, L. Dragoun, R. Stolariková

J. For. Sci., 2016, 62(3):97-106 | DOI: 10.17221/94/2015-JFS  

The present study examines the relationship between the quality of timber production and the species and structural diversity of forest stands. The data used came from a regional forest inventory of the University Forest Enterprise "Kostelec nad Černými lesy", Czech Republic. The inventory was performed from 2009 to 2011 on 1,188 sample plots that represented 86 strata defined by the combination of three variables: site (5 categories), age (12 categories) and canopy cover (5 categories). On each sample plot, we quantified 171 partial biodiversity indicators that represented species or structural diversity. The quality of timber production was specified...

Enhanced micropropagation protocol of ex vitro rooting of a commercially important crop plant Simmondsia chinensis (Link) SchneiderOriginal Paper

A. Singh, P.K. Agarwal

J. For. Sci., 2016, 62(3):107-115 | DOI: 10.17221/80/2015-JFS  

A micropropagation protocol was developed by further improvement of prevailing methods using proven germplasm for ex vitro rooting and addressed the effect of the number of subcultures on the rooting ability of shoots. A comparative study was done between in vitro rooting method and ex vitro rooting method. Using the ex vitro rooting method a plantlet could be produced in 135 days, which was in a shorter time compared to the in vitro rooting method - 180 days. The best axillary shoot bud induction was observed on Murashige and Skoog (MS) medium supplemented with 4.6 μM thidiazuron (TDZ) with 5 shoot buds per explant. In the shoot cluster, which...

The assessment of forestry companies in the Czech Republic with focus on profitabilityOriginal Paper

M. Levá, H. Čermáková, M. Stárová, H. Vostrovská

J. For. Sci., 2016, 62(3):116-125 | DOI: 10.17221/88/2015-JFS  

The paper deals with the evaluation of economy of forestry companies. The evaluation stems from the results of economic analyses of enterprises that are further monitored in the context of forestry and development of economic financial ratios of evaluated companies. Furthermore, the evaluation is based on real possibilities of companies stemming from resources which they have at their disposal and on the facts that occurred in the selected companies in the monitored period. The development of important factors influencing the whole branch of forestry and their real state are introduced in the first part of the paper. After that, methods used in financial...

Response of directly seeded high-value timber species to microorganisms, fertiliser and a water retention polymer: implications for reforestation of agricultural lands in Southeast AsiaOriginal Paper

T. So, K.X. Ruthrof, M. Sommeechai, B. Thaiutsa, B. Dell

J. For. Sci., 2016, 62(3):126-136 | DOI: 10.17221/105/2015-JFS  

High-value native timber species are being promoted in reforestation in Southeast Asia. However, slow growth during early establishment, coupled with poor soil fertility, poses challenges for promoting tree planting programs. Field trials were undertaken on agroforestry land in Thailand to examine the efficacy of reforestation treatments. The first trial examined the effect of applying microorganisms and fertiliser on directly seeded Acacia mangium Willdenow, Dalbergia cochinchinensis Pierre and Xylia xylocarpa (Roxburgh) Theobald. After 20 months, a mixed inoculum of arbuscular mycorrhizal and ectomycorrhizal fungi improved survival and basal diameter...

Development of models for forest variable estimation from airborne laser scanning data using an area-based approach at a plot levelOriginal Paper

J. Sabol, D. Procházka, Z. Patočka

J. For. Sci., 2016, 62(3):137-142 | DOI: 10.17221/73/2015-JFS  

Airborne laser scanning (ALS) is increasingly used in the forestry over time, especially in a forest inventory process. A great potential of ALS lies in providing quick high precision data acquisition for purposes such as measurements of stand attributes over large forested areas. Models were developed using an area-based approach to predict forest variables such as wood volume and basal area. The solution was performed through developing an object-oriented script using Python programming language, Python Data Analysis Library (Pandas), which represents a very flexible and powerful data analysis tool in conjunction with interactive computational environment...

Three forest engineers: Josef Opletal, Karel Šiman and Gustav ArtnerBook Review

G. Novotný

J. For. Sci., 2016, 62(3):143-144 | DOI: 10.17221/10/2016-JFS