Abstract
ABSTRACTA new requirement has emerged to improve efficiency in forest management in Japan. However, few empirical studies assess the efficiency of forest management using data from several sites and examine long-term forest management. The objective of this research is to assess the efficiency of thinning by examining daily operational data on the districts in Hiyoshi provided by the Hiyoshi’s Forest Owners’ Cooperative. Using data envelopment analysis, we find that even within the same organization, differences can be seen among forest plots. In addition, from the econometric analysis, we find that efficiency significantly depends on natural conditions such as tree diameter at breast height or number of felled trees left in forests (rather than extracted). The results indicate that Hiyoshi’s Forest Owners’ Cooperative, which applies relatively advanced forest management, can still improve efficiency by working with trees with large enough diameters at breast height, implementing thinning that will lead to such larger diameters, and introducing an adequate machine that will decrease the number of felled trees left in forests.
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