Time consumption, productivity, and cost analysis of the motor manual tree felling and processing in the Hyrcanian Forest in Iran  

作　　者：Rostam Mousavi Mehrdad Nikouy Jori Uusitalo 

机构地区：[1]University of Guilan, Somea Sara, Department of Forestry, Guilan, Iran [2]Natural Resources Faculty, Forestry Department. Urmia University. P.O. Box 165, Urmia, Iran [3]Finnish Forest Research Institute, Parkano, Research Unit, Kaironie- mentie 54, FI-39700, Parkano, Finland

出　　处：《Journal of Forestry Research》2011年第4期665-669,共5页林业研究（英文版）

基　　金：financially supported by Iranian Ministry of Science, Research and Technologies and University of Joensuu

摘　　要：An empirical time study was cohducted to evaluate the performance of the current felling and tree processing methods used in Northern Iran＇s Hyrcanian forest. Motor-manual felling is done mostly in winter, while tree processing starts when the felling season ends. We identified the elements of felling and processing work phases, and 142 cycles and 110 cycles were respectively recorded for felling and processing. On the basis of data analysis （time study）, we developed statistical models of effective time consumption in the respective work phase and for its total productivity. The production rate of felling with and without delay time was 9.7 and 11.65 trees per hour （0.17 USD.m^-3 and 0.21 USD-m^-3）, and the average production cost with and without delay was 1.21 USD and 1.45 USD per tree, respectively. The average productivity of processing was 35 m^3 per effective hour and the average unit cost of processing was 0.92 USD.m^-3.An empirical time study was cohducted to evaluate the performance of the current felling and tree processing methods used in Northern Iran＇s Hyrcanian forest. Motor-manual felling is done mostly in winter, while tree processing starts when the felling season ends. We identified the elements of felling and processing work phases, and 142 cycles and 110 cycles were respectively recorded for felling and processing. On the basis of data analysis （time study）, we developed statistical models of effective time consumption in the respective work phase and for its total productivity. The production rate of felling with and without delay time was 9.7 and 11.65 trees per hour （0.17 USD.m^-3 and 0.21 USD-m^-3）, and the average production cost with and without delay was 1.21 USD and 1.45 USD per tree, respectively. The average productivity of processing was 35 m^3 per effective hour and the average unit cost of processing was 0.92 USD.m^-3.

关 键 词：Motor-manual felling time study CHAINSAW PROCESSING cost forest work study 

分 类 号：S782[农业科学—木材科学与技术]