The effect of single-tree selction system on soil properties in an oriental beech stand of Hyrcanian forest, north of Iran

2011 ◽  
Vol 22 (4) ◽  
pp. 591-596 ◽  
Author(s):  
Kambiz Abrari Vajari ◽  
Hamid Jalilvand ◽  
Mohammad Reza Pourmajidian ◽  
Kambiz Espahbodi ◽  
Alireza Moshki
Keyword(s):  
Soil Properties ◽  
Hyrcanian Forest ◽  
Single Tree ◽  
Oriental Beech ◽  
Beech Stand ◽  
North Of Iran

The impact of road disturbance on vegetation and soil properties in a beech stand, Hyrcanian forest

2018 ◽  
Vol 137 (6) ◽  
pp. 759-770 ◽  
Author(s):  
Azade Deljouei ◽  
Seyed Mohammad Moein Sadeghi ◽  
Ehsan Abdi ◽  
Markus Bernhardt-Römermann ◽  
Emily Louise Pascoe ◽  
...  
Keyword(s):  
Soil Properties ◽  
Hyrcanian Forest ◽  
Road Disturbance ◽  
Beech Stand ◽  
The Impact

scholarly journals Effect of Oriental beech root reinforcement on slope stability (Hyrcanian Forest, Iran)

2014 ◽  
Vol 60 (No. 4) ◽  
pp. 166-173 ◽  
Author(s):  
E. Abdi
Keyword(s):  
Tensile Strength ◽  
Slope Stability ◽  
Root Distribution ◽  
Factor Of Safety ◽  
Power Relationship ◽  
Strength Increase ◽  
Hyrcanian Forest ◽  
Reinforcement Effect ◽  
Root Reinforcement ◽  
Oriental Beech

Vegetation significantly affects hillslope mechanical properties related to shallow landslides and slope stability. The objective of this study was to investigate and quantify the effect of Oriental beech root reinforcement on slope stability. A part of Hyrcanian forest in northern Iran was selected for the study area. To do the research, the Wu model (WM) was used and data related to the distribution and tensile strength of Oriental beech roots were collected. Root distribution was assessed using the concept of the root area ratio and trenching method. Laboratory tensile tests were conducted on fresh roots for strength characteristics. The factor of safety was calculated for two different soil thicknesses (1 and 2 m) and slope gradients between 10 and 45&deg;. The results showed that the root distribution generally decreased with increasing soil depth and the mean root strength value was 38.23 &plusmn; 1.19 MPa for 0.35&ndash;5.60 mm diameter range. The results verified a power relationship between tensile strength and root diameter. The reinforcement effect (C<sub>r</sub>) decreased with depth and the strongest reinforcement effect was in the second soil layer (10&ndash;20 cm) which showed a shear strength increase of 1.47 kPa. The increased factor of safety due to the presence of roots in one- and two-metre soil thicknesses was 27&ndash;44% and 15&ndash;26%, respectively. The improvement effect of roots was increased with increasing slope gradient and shallower soil thicknesses. &nbsp; &nbsp;

Single-Tree Influence on Soil Properties in the Mountains of Eastern Kentucky

Ecology ◽  
1990 ◽  
Vol 71 (4) ◽  
pp. 1365-1372 ◽  
Author(s):  
S. E. Boettcher ◽  
P. J. Kalisz
Keyword(s):  
Soil Properties ◽  
Eastern Kentucky ◽  
Single Tree

The effect of landform on soil microbial activity and biomass in a Hyrcanian oriental beech stand

CATENA ◽  
2017 ◽  
Vol 149 ◽  
pp. 309-317 ◽  
Author(s):  
Maryam Fazlollahi Mohammadi ◽  
Seyed Gholamali Jalali ◽  
Yahya Kooch ◽  
Daniel Said-Pullicino
Keyword(s):  
Microbial Activity ◽  
Soil Microbial Activity ◽  
Soil Microbial ◽  
Oriental Beech ◽  
Beech Stand
Sign in / Sign up

Export Citation Format

Share Document