Abstract
Animal-powered logging is a labour-intensive operation. Mule logging is still performed in the Hyrcanian forest ecoregion in Iran as a small-scale harvesting method. Mule logging in Namkhaneh district of Kheyrud Forest within this ecoregion was studied to develop hauling regression models and estimate haulage costs. A continuous time study was conducted of hauling of sawn-lumber, pulpwood and fuelwood, to assess mule logging productivity and cost for sawn-lumber and pulpwood as well as fuelwood hauling. Hauling distance was found to be the most important cost factor in wood extraction by mule. The hourly production rates of hauling with mule were 0.84, 0.52 and 0.42 m3 for sawn-lumber, pulpwood and fuelwood, respectively. The cost of the mule hauling system USD 13 per productive mule hours. Hourly costs of mule hauling of sawn-lumber, pulpwood and fuelwood logging were 15.5, 25, and 30.6 USD/m3. Increasing hauling distances caused a linear increase in haulage cost. There appears to be an opportunity to reduce cost of log production by increasing scheduled work hours, wider utilization of mules and reducing labour cost.
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