Morteza Habibi; Hadi Kia-Daliri; Reza Akhavan
Volume 13, Issue 3 , October 2015, , Pages 25-34
Abstract
The 16th district of Tehran city was selected for investigating the condition of trees in urban areas. A qualitative and quantitative study was conducted on the stands of two species, namely European elm (ulmus carpinifolia) and Persian elm (ulmus carpinifolia var.umberaculifera), in two forms of stand ...
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The 16th district of Tehran city was selected for investigating the condition of trees in urban areas. A qualitative and quantitative study was conducted on the stands of two species, namely European elm (ulmus carpinifolia) and Persian elm (ulmus carpinifolia var.umberaculifera), in two forms of stand and line. One hundred trees for each kind (separately) were measured after selecting the stands. After having chosen the lines, first one tree was randomly selected and, then, the next tree would selected and the fourth one. Following this, quantitative parameters (including diameter at breast height, tree height, crown height and average of crown diameter) and qualitative parameters (including the health of crown, the die back, canker, and pests and multi-branching) were measured. According to the results we can say that, according to quantitative characteristics, the European elm has a better desirability rather than the Persian elm, while the Persian elm has healthier crown, lower die back and fewer pests than the European elm in terms of qualitative characteristics; the European elm has more limited multi-branching than the Persian elm but no significant differences were discovered in canker. Thus, for the development of green areas in lines and where the objective is to design an aesthetic landscape, it is better to use Persian elm and, when establishment of forest planting and improvement of quantitative characteristics is desired (stands), European elm may be a better option.
Narges Dramiani; Hadi Kiadaliri; Masoud Bijani; Farzad Veisanloo
Volume 13, Issue 3 , October 2015, , Pages 51-62
Abstract
Forest resources management due to the breadth of the subject and interference with social and economic issues is a meta-organizational plan application which is required the public participation. Due to increasing population size and high dependency of forest dwellers to forest resources, the destruction ...
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Forest resources management due to the breadth of the subject and interference with social and economic issues is a meta-organizational plan application which is required the public participation. Due to increasing population size and high dependency of forest dwellers to forest resources, the destruction of these valuable resources declined in terms of quantity and quality and is in danger of disappearing. The purpose of this study was to investigate affecting factors on participation of forests rural dwellers toward Oshtorankooh forests management in Doroud. The study was fulfilled by using descriptive - correlation method. The population size was 543 households that according to Krejcie & Morgan Table, 226 family supervisors were studied as a sample by using stratified random sampling method. Statistical analysis was done through SPSS software. The research tool included a questionnaire that its validity was confirmed by a group of professionals. A pilot study was conducted during which the Cronbach's alpha test was calculated to determinate the reliability of data collection instrument. Multiple regression analysis showed that the use of educational tools and resources, attitude to participation, age, cooperation and interaction experience in rural areas, education level and annual income, could explain 0.51 of the variation of participation. Results of path analysis showed that variable of the use educational tools and resources had the most effect and the awareness of the importance of forests had the least effect on the participation rate in forest management. Based on the findings, some executive recommendations have been presented
