搜索结果: 1-7 共查到“林学 north of Iran”相关记录7条 . 查询时间(0.145 秒)
Recreational values of forest park using the contingent valuation method (case study: Saravan Forest Park, north of Iran)
willingness to pay environmental economics logit regression model economic values
2016/11/11
The aim of this research was to evaluate the economic values of Saravan Forest Park, north of Iran. The contingent valuation method was used for this propose. In order to do this research, 480 questio...
Effects of rubber-tired skidder and farm tractor on physical properties of soil in plantation areas in the north of Iran
aspen skid trail skidding machine soil disturbance timber skidding
2015/9/15
Physical properties of soil can be affected by machines that are used for skidding which have the potential to impact soil sustainability and forest productivity. The present study evaluated the effec...
FOREST TYPES CLASSIFICATION USING ETM+ DATA IN THE NORTH OF IRAN/ COMPARISON OF OBJECT-ORIENTED WITH PIXEL-BASED CLASSIFICATION TECHNIQUES
Forestry Mapping Segmentation Comparison Classification Method Object Pixel
2015/7/30
Different classification methods have been used for classification of satellite data by researchers. Addition to current classification,
pixel-based methods, developments in segmentation and object ...
Economic evaluation of natural forest park using the travel cost method (case study; Masouleh forest park, north of Iran)
willingness to pay recreational value
2015/5/5
We evaluated recreational and socioeconomic values of Masouleh forest park, north of Iran. Travel Cost
Method (TCM) or Clawson method was used for evaluation. Therefore, 96 questionnaires were distr...
Earthworm biomass and abundance, soil chemical and physical properties under different poplar plantations in the north of Iran
soil properties populus clones populus caspica organic carbon poplar
2015/4/24
We evaluated earthworm abundance and biomass in plantations of different poplar species and clones as well as the effect of some soil chemical and physical properties on them. Even-aged poplar species...
Considering the relationship of slope and soil loss on skid trails in the north of Iran (a case study)
harvesting runoff
2015/4/24
With increasing mechanization of forest harvesting operations the impacts on soil have increased quite dramatically. The objective of this paper was to examine the relationship of slope and soil loss....
The effect of shelterwood silvicultural method on the plant species diversity in a beech (Fagus orientalis Lipsky) forest in the north of Iran
beech forest shelterwood method plant diversity
2015/3/16
To clarify the effect of shelterwood silvicultural method on the diversity of plant species in a beech (Fagus orientalis) forest in the north of Iran, we compared the plant species diversity in three ...