Abstract
The most important decision that a forest ower must make is to determine whether a forest stand should be cut or reserved, or when it should be cut in accordance with the estimation of its financial maturity period. As for the financial maturity, there exists a traditional forest valuation studies which can give computationally precise calculation, but the room for their actual application to practical forest management problem is not wide because they use static models. In this paper we can apply the multistage linear programming method (MLPM) to these problems. This paper deals with a valuation model of silvicultural investment at first, and then discuss how to apply MLPM and some application results followed by a discussion. This MLPM can provide the effective information for deciding the financial maturity. period. According to this planning method, we can concretely predict the long term treatment of forest stands more than 30 years and this can furnish effective information on the forest management decision making.