執行成果摘要
The purpose of this research in this year was to detect wood properties of wood-based members in different ecological engineers. The wood-based members of ecological engineer had different used years (＜ 3 and ＞= 3 yrs) and detecting techniques inclused ultrasonic wave and stress wave methods, Pilodyn method, drilling resistance method, moisture contetn meter testing, and Fractometer detecting method for understanding the different nondestruction evaluated parameters. The nondestruction evaluated parameter inclused acoustic velocity, penetration depth, driling resistance value, moisture content, and compressive strength for understanding the wood quality of wood-based member. Moreover, the system of nondestruction techniques was built for evaluation and detection of wood-based members in ecological engineer. We had examined the wood-based members of 11 new built ecological engineers (3 yrs) in this year, and those of 7 old built engineers (＞3 yrs) by different nondestructive techniques from two sites of Luodong and Nonton Forest District Offices. There were significant different between 18 different ecological engineers (P＜0.05).By the way, the retentation (medical content) in wood-based members in ecological engineer was explored by extracted corers for understading between retention and wood decay. Results displayed that the lower retentation of wood-based member had higher wood decay levels and visual grades. There was significant different between non-preservated and preserved wood-based members by ACQ and AC treatments in lab test. The preserved medical treated wood (K4 level) had protecting affected by standard white and brown-decay bacteria. Above results can be refered for further maintain wood-based members and safe use in ecological engineer, and promotion of plantation wood applications in the use of wood components of ecological engineering methods.