THE EFFECTS OF TREE SPECIES ON REDUCTION OF THE RATE OF NOISE POLLUTION AT THE EDGE OF HYRCANIAN FOREST ROADS

2015 ◽  
Vol 14 (5) ◽  
pp. 1021-1026 ◽  
Author(s):  
Mehran Nasiri ◽  
Asghar Fallah ◽  
Behnam Nasiri
Keyword(s):  
Tree Species ◽  
Noise Pollution ◽  
Hyrcanian Forest ◽  
Forest Roads

scholarly journals A Comparison of the Formation Rates and Composition of Tree-Related Microhabitats in Beech-Dominated Primeval Carpathian and Hyrcanian Forests

Forests ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 144
Author(s):  
Razieh Rafiei Jahed ◽  
Mohammad Reza Kavousi ◽  
Mohammad Ebrahim Farashiani ◽  
Khosro Sagheb-Talebi ◽  
Manoochehr Babanezhad ◽  
...  
Keyword(s):  
Tree Species ◽  
European Beech ◽  
Forest Belt ◽  
Hyrcanian Forest ◽  
Heritage Site ◽  
Fagus Orientalis Lipsky ◽  
Weibull Models ◽  
Saproxylic Species ◽  
Fagus Sylvatica L ◽  
Using Data

Primeval forests in the temperate zone exist only as a few remnants, but theses serve as important reference areas for conservation. As key habitats, tree-related microhabitats (TreMs) are of intense interest to forest ecologists, but little is known about their natural composition and dynamics in different tree species. Beech forms a major part of the temperate forests that extend from Europe, home to European beech Fagus sylvatica L. (Fs), eastward to Iran, where Oriental beech Fagus orientalis Lipsky (Fo) is the dominant species. In this study, we compared TreMs in primeval forests of both species, using data from Fo growing in 25 inventory plots throughout the Hyrcanian forest belt in Iran and from Fs growing in a 9 ha permanent plot in the Uholka Forest of Ukraine. TreMs based on 47 types and 11 subgroups were recorded. Beech trees in the Hyrcanian forest had a higher mean diameter at breast height (dbh) than beech trees in Uholka and contained twice as many TreMs per hectare. Although the mean richness of TreMs per TreM bearing tree was similar in the two species, on the basis of the comparison single trees in two groups (n = 405 vs. 2251), the composition of the TreMs clearly differed, as the proportions of rot holes, root-buttress concavities, and crown deadwood were higher in the Hyrcanian Forest, and those of bark losses, exposed heartwood, and burrs and cankers higher in Uholka Forest. Estimates of TreMs dynamics based on dbh and using Weibull models showed a significantly faster cumulative increase of TreMs in Fo, in which saturation occurred already in trees with a dbh of 70–80 cm. By contrast, the increase in TreMs in Fs was continuous. In both species, the probability density was highest at a dbh of about 30 cm, but was twice as high in Fo. Because of limitations of our study design, the reason behind observed differences of TreM formation and composition between regions remains unclear, as it could be either result of the tree species or the environment, or their interaction. However, the observed differences were more likely the result of differences in the environment than in the two tree species. Nevertheless, our findings demonstrate that the Hyrcanian Forest, recently designated as a natural heritage site in Iran, is unique, not only as a tertiary relict or due to its endemic trees, herbs and arthropods, but also because of its TreMs, which form a distinct and rich habitat for associated taxa, including endemic saproxylic species.

scholarly journals Oprášené spomienky a zopár nekonvenčných návrhov

2013 ◽  
Vol 59 (4) ◽  
pp. 284-288
Author(s):  
Rudolf Šály
Keyword(s):  
Forest Soil ◽  
Tree Species ◽  
Soil Degradation ◽  
Degradation Rate ◽  
Ecological Impacts ◽  
Soil Protection ◽  
Timber Production ◽  
Forest Stands ◽  
Forest Roads ◽  
Physiological Processes

Abstract The paper, important particularly in terms of comparison of temporal analyses in forestry (in tens of years), is focused on: - assessment of the soil degradation rate caused by coniferous monocultures (mainly spruce), - issues of soil protection in relation to forest roads (sloping tracks), - present ecological impacts of the environment (including physiological processes of tree species) on forest soil and with an emphasis on timber production on forest stands, The author evaluates and presents proposals for assessment of all the issues with great scientific erudition.

scholarly journals   Determination of correction coefficient of average skidding distance according to the existing road network in Alikia Soltan forest of Iran  

2013 ◽  
Vol 59 (No. 12) ◽  
pp. 475-478
Author(s):  
M. Rezaei ◽  
F. Shafizade ◽  
M.A. Rezaei
Keyword(s):  
Road Network ◽  
Correction Coefficient ◽  
Hyrcanian Forest ◽  
Topographic Map ◽  
Road Density ◽  
Forest Roads ◽  
Forest Road ◽  
Average Slope

One of the factors in planning forest roads is average skidding distance which is calculated in projects from the map, according to forest road density, however it has a low accuracy. In this study real average skidding distance and theoretical average skidding distance were measured to determine a correction coefficient in Alikia Soltan forest in Hyrcanian forest. In this study real average skidding distance was obtained by putting a meter on the axes of trails. Moreover, theoretical average skidding distance was calculated by means of road density according to the formula. Skid trails were recorded by GPS and overlaid to a topographic map by means of ArcGIS software. Results indicated that for the study area with the average slope of 27% and road density of 10.32 the correction coefficient is 2.1.

The diversity of saproxylic insects (Coleoptera, Heteroptera) on four tree species of the Hyrcanian forest in Iran

2018 ◽  
Vol 22 (3-4) ◽  
pp. 607-625 ◽  
Author(s):  
Jörg Müller ◽  
Hassan Barimani Varandi ◽  
Mohammad Reza Babaii ◽  
Mohammad Ebrahim Farashiani ◽  
Khosro Sageb-Talebi ◽  
...  
Keyword(s):  
Tree Species ◽  
Hyrcanian Forest ◽  
Saproxylic Insects

Purification of plasma membranes from leaves of conifer and deciduous tree species by phase partitioning and free-flow electrophoresis

1995 ◽  
Vol 95 (3) ◽  
pp. 399-408 ◽  
Author(s):  
Elena Toll ◽  
Federico J. Castillo ◽  
Pierre Crespi ◽  
Michele Crevecoeur ◽  
Hubert Greppin
Keyword(s):  
Tree Species ◽  
Plasma Membranes ◽  
Free Flow ◽  
Deciduous Tree ◽  
Phase Partitioning

Biscogniauxia (Hypoxylon) Canker or Dieback in Trees

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Claudia Paez ◽  
Jason A. Smith
Keyword(s):  
Water Stress ◽  
Tree Species ◽  
Soil Compaction ◽  
Urban Areas ◽  
Root Disease ◽  
Poor Health ◽  
Green Spaces ◽  
Opportunistic Pathogens ◽  
Wide Range ◽  
Quercus Spp

Biscogniauxia canker or dieback (formerly called Hypoxylon canker or dieback) is a common contributor to poor health and decay in a wide range of tree species (Balbalian & Henn 2014). This disease is caused by several species of fungi in the genus Biscogniauxia (formerly Hypoxylon). B. atropunctata or B. mediterranea are usually the species found on Quercus spp. and other hosts in Florida, affecting trees growing in many different habitats, such as forests, parks, green spaces and urban areas (McBride & Appel, 2009).  Typically, species of Biscogniauxia are opportunistic pathogens that do not affect healthy and vigorous trees; some species are more virulent than others. However, once they infect trees under stress (water stress, root disease, soil compaction, construction damage etc.) they can quickly colonize the host. Once a tree is infected and fruiting structures of the fungus are evident, the tree is not likely to survive especially if the infection is in the tree's trunk (Anderson et al., 1995).

Sign in / Sign up

Export Citation Format

Share Document