Journal of Forest Science, 2012 (vol. 58), issue 1
Relationship between forest road length and village development during three decades in Neka-Zalemrood forest
S.A. Hosseini, M.E. Khalili, M. Pourmajidian, A. Fallah, A. Parsakhoo
J. For. Sci., 2012, 58(1):1-7 | DOI: 10.17221/44/2010-JFS 
Forest roads are built to facilitate the transport of personnel and wood, and so to promote village development. In this study 18 development indices of village in relation to increasing forest road density were evaluated during three decades for the villages of Aryam, Estakhrposht, Hosein Abad, Daram, Sarm and Darzikola in Neka-Zalemrood forest. According to the National Population and Housing Census of Iran (NPHCI), the rank of zero was considered for cases when a village did not have a specific facility and the rank of one was considered for cases when a village had a specific facility and service. The total length of forest roads was measured on...
Effects of seed origin, growing medium and mini-plug density on early growth and quality of black locust (Robinia pseudoacacia [L.]) seedlings
O. Dini-Papanastasi, P. Kostopoulou, K. Radoglou
J. For. Sci., 2012, 58(1):8-20 | DOI: 10.17221/46/2011-JFS
The objective of this study was to identify optimal growing conditions for the production of high-quality mini-plug seedlings of black locust (Robinia pseudoacacia [L.].). Two seed origins (Greek and Hungarian), two growing media (enriched peat and stabilized medium) and four mini-plug densities (975; 1,460; 1,820 and 3,500 mini-plugs.m-2) were tested in two phases, in growth chambers and in a nursery after transplanting the mini-plugs into larger containers. Measurements included seedling survival, growth traits (root length, shoot height, leaf area, root dry mass, shoot dry mass, root/shoot ratio) and root growth potential (RGP)....
Productivity and cost of farm tractor skidding
N. Gilanipoor, A. Najafi, S.M. Heshmat Alvaezin
J. For. Sci., 2012, 58(1):21-26 | DOI: 10.17221/4804-JFS
In this study, productivity rate and operation cost of farm tractor were evaluated in a mountainous natural forest. Data for the study came from a detailed time study in the Research and Educational Forest of Tarbiat Modares University (REFTMU) and was used to develop a multiple linear regression model to predict the skidding cycle time. The results showed that effective independent variables of skidding time were skidding distance and slope of skid trail (P = 0.01). Average productivity rate ranged from 2.43 to 2.60 m2.h-1. Total time and effective time, respectively. Total cost of the system was 10.24 USD.h-1...
Needle longevity as a criterion of response to a climatic fluctuation (so called heat wave) in Scots pine populations at early phases of ontogeny
V. Nárovec, J. Nárovcová
J. For. Sci., 2012, 58(1):27-34 | DOI: 10.17221/4805-JFS
The paper presents results of an assessment of needle age classes in Scots pine partial populations in the period of three and five years after outplanting in a lowland site in relation to conditions created by climatic elements. The method is based on Skuhravý's (1987) description when the state of needle age classes of the third whorl (from the apex) is evaluated just once. Five-year summary of meteorological data was assessed according to the criteria of determination of periods of heat waves and dry spells. Differences in numbers of living needle age classes in the groups of Scots pine populations in the period of three and five years after their...
Sulphate concentration and S-SO42 - flux in soil solutions in the West Carpathians Mountains on an example of submontane beech forest stand
R. Janík, E. Bublinec, M. Dubová
J. For. Sci., 2012, 58(1):35-44 | DOI: 10.17221/122/2010-JFS
The paper presents the evaluation of data on precipitation totals and on SO42 -concentrations and S-SO42 - fluxes in lysimetric waters in a submontane beech stand. The records cover continually a 19-year period. The site is situated in the Kremnické vrchy Mountains, belonging to the West Carpathians Mountains. The material was sampled on two plots. The first had been clear cut immediately before the research started (1989), the second was covered with the original forest stand. In total, the highest SO42 - concentrations on the open plot were measured four years after the intervention...