We developed high speed bamboo powdering machine in the consideration of using regional biomass material to revive the desolated bamboo forests. Bamboo powder size is about 300 μm, has a porous hole, living lactobacilli. These powders can be used as a useful agricultural material initially, and also can extend the use for foods and industrial product. The market price of bamboo powder is now 300 yen/kg, and the gross profit by using the developed machine with the production ability 300 tons will be 1.36 million yen with the selling price of 200 yen/kg and annual production of 50 tones. The machine price of 15 million yen will be depreciated within two years when the annual production is 100 tons because of the gross profit of 7.47 million yen. We intend to activate regional economics by organizing new business through vitalize the use of regional biomass resources. It will be possible to develop the machine installed on the truck and to realize the operation of bamboo powder machining at the forest road with applying the mobile mechanism.

We illustrate a new system using broad-leaved tree stands as fuel for woody biomass power generation plants. This system could compensate for fossil fuel shortages, and show a net profit. The system simultaneously harvests broad-leaved natural stands and coniferous plantation stands within a cable logging area. A portion of logged conifers are shipped as saw logs and the remainder as fuel for biomass power plants. All of the logged broad-leaved trees are shipped as fuel. When logging productivity peaks and the cutting ratio of the coniferous stands within the logging area is 30 % or more, profits can cover replanting costs after clear cutting of the coniferous stands. With this system, profit is determined by the following two factors: marginal profit derived from the logged area of broad-leaved stands, and profit from clear cutting of coniferous stands in the cable logging area.

We experimented to clarifying the effects and issue of felling training using simulated trees. We conducted two kinds of experiments; comparative test without training and effectiveness verification test with the training. In each experiment we evaluated felling skills by measuring the accuracy of felling direction, width of hinge and height of hinge, three times each. Regardless of the initial skill level of the test subject, only skills to determine the felling direction tended to be learned quickly when using simulated trees. From this result, it is inferred that securing the repetition number of training using a simulated trees works advantageously to improve the skill defining the felling direction.