FOREST RESOURCE EVALUATION METHOD

To evaluate the economic efficiency of a forest by taking into account not only the value of the trees that grow in the forest, but also the work costs required to collect timber from felled trees in the forest, collect them to a landing, and transport them to a market.SOLUTION: In the present invention, in a forest resource evaluation method for evaluating forest resources in a predetermined area in a forest, a collection route from the predetermined area to a landing is set, work cost is obtained by calculating the felling cost, timber construction cost, timber collection cost, and carrying out cost for each of trees growing in the predetermined area, and the value of each individual tree growing in a predetermined area is calculated, and then an economic efficiency of whether an economic forest or non-economic forest is determined by obtaining the operating income and expenditure of a predetermined area on the basis of these work costs and values. A plurality of collection routes are set, the sum of work costs is obtained for each collection route, and the collection route that minimizes the sum of work costs is determined.SELECTED DRAWING: Figure 1 【課題】森林に植生する樹木の価額だけでなく、森林内で伐倒し造材した後に土場まで集材するとともに市場まで搬送するために要する作業コストまで考慮して、森林の経済性を評価すること。【解決手段】本発明では、森林内の所定領域における森林資源を評価する森林資源評価方法において、所定領域から土場までの集材ルートを設定するとともに、所定領域に植生する樹木について単木ごとの伐倒コスト、造材コスト、集材コスト、搬出コストを算出して作業コストを求める一方、所定領域に植生する樹木について単木ごとの価額を求め、これらの作業コストと価額とに基づいて所定領域の施業収支を求めて経済林か非経済林かの経済性を判断することにした。複数の集材ルートを設定し、各集材ルートごとに作業コストの総和を求め、作業コストの総和が最小となる集材ルートを決定することにした。【選択図】図１