TREE MANAGEMENT PLAN IN WATARASE RESERVOIR BY ASSET MANAGEMENT METHOD

Abstract

In Watarase reservoir, naturally grown random trees are considered to be worsening the landscape and getting maintenance roads or other river management facilities unstabl. Therefore, situation of the reservoir must be checked regularly and unnecessary trees should be cut down systematically. To get a better understanding of the situation in the reservoir, we have carried out the field survey around the reservoir whole area and classified those trees into some categories based on the growth area, elevation and tree diameters.

In order to rationalize maintenance cost by cutting and disposing those trees and get appropriate outcome from the reservoir considering landscape and river management, we applied the asset management method to the tree management plan. Our research showed that preventive maintenance of trees is more effective and economically profitable.