国有林経営の販売行動と地元市場

Abstract

This study demonstrates how the National Forest has been managed in response to economic conditions since World War II. Those years could be divided into six periods examined each period in terms of "yield", "marketing" and "local market", and located it in the variable stage of economic conditions through the matrix of "yield" and "local market demand". The actual examples chosen were Senzu National Forest and Shimada Lumber produced center, both in Shizuoka Prefecture. 1. (1951-1955) Mean yearly yield; 24106m3 standing timber volum. In this period the yield was poor, but the market demand increased. The management strategy was to develope natural forest resources and at the same time to quarantee the marketing chanels as to open a yard in Shimada City, where logs were assembled, graded, sorted and sold by tender. 2. (1955-1960) Mean yearly yield; 47635m3 standing timber volum. Increased stumpage sale raised the quantity of planned yield, and the demand was highly stabilised. The National Forest management grouped the buyers. Interdependence between the National Forest and the market was strengthened. Stumpage were sold more through negotiated sales based upon auctions of comparable logs. 4. (1966-1971) Mean yearly yield; 94779m3 standing timber volume. The total yield was still abundant, but available land for stumpage sale decreased and log sale increased to a ceiling. On the other hand, imported logs bega nto make an inroad on the domestic demand. It resulted the decrease of the National Forest timber demand. This period was a turning point of the Natinal Forest management after the war. 5. (1972-1974) Mean yearly yield; 48568m3 standing timber volume. The business fell into the red. This finantial difficulty constricted the direct management of the National Forest. The yield greatly decreased. The first oil crisis constrained them to change into the low rate of economic growth. The whole demand decreased to make the National Forest have less connection with local market. 6. (1975-1981) Mean yearly yield; 30040m3 standing timber volume. Both demand and yield hovered around the low level. Price oriented marketing encouraged grading and sorting and at the same time spreading the marketing chanels. The management strategy, which seems effective today, is to secure the marketing chanels and maintain the productive power.