Prediction model of tree felling by chainsaw in selection system (Case study: Namkhaneh District, Kheiroud forest)

تحقیقات جنگل و صنوبر ایران

卷:19

Mohammad Reza Azarnoosh¹  Nasrollah Rafatnia²  Javad Mirarab³  Jafar Fathi⁴ 

[1] Assistant Prof., Faculty of natural resources, Islamic Azad University, Chalous branch;

[2] Associate Prof., Faculty of forestry and wood and paper technology, Gorgan University of agricultural science and natural resources;

[3] M.Sc. graduated, Faculty of natural resources, University of Tehran;

[4] M.Sc. student of forestry, Faculty of natural resources, Islamic Azad university, Chalous branch;

关键词: time study;    cutting;    Regression model;    PRODUCTION;    cost;   

DOI  :  10.22092/ijfpr.2011.107575

来源: DOAJ

【 摘 要 】

Regarding to special situation of northern forests in Iran, chainsaw is a unique cutoff. Nevertheless, study to evaluat operation efficiency is imperative. Present study was carried out with the aim of time study of cutting operation, estimating the productivity and costs of chainsaw, and developing a regression model. According to the results of this study, the hourly production of cutting by chainsaw with and without delay time were 51.6 m3/h (9.6 trees/h) and 86.2 m3/h (16 trees/h), respectively. Cutting productivity was increased related to DBH as power model and on the other hand the unit cost was decreased. Total cutting cycle time with and without delay time were averaged 6.24 and 3.74 minutes, respectively.

【 授权许可】

Unknown