兩種加拿大進口及三種國內木材之抗白蟻性及耐腐性

Termite and Decay Resistance of Two Imported Canadian and Three Domestic Woods

林天書(Tien-Shu Lin) ； 張東柱(Tun-Tschu Chang)

《台灣林業科學》 14卷2期 (1999/06) Pp. 235-239

https://doi.org/10.7075/TJFS.199906.0235

摘要

Two imported Canadian, Thuja plicata and Chamaecyparis nootkatensis, and 3 domestic wood materials, Chamaecyparis formosensis, Calocedrus formosana, and Pinus taiwanesis (control treatment), were tested according to ASTM D 3345-74 and D 2017-81 methods to determine their natural resistance to the Formosan termite (Coptotermes formosanus) and 3 wood rotting fungi (Fomitopsis pinicola, Ganoderma australe, and Gloeophyllum sp.), respectively. The results showed that the mortality of Formosan termites after feeding on different woods for 4 wk was 79.2±4.2% for T. plicata, 98.2±1.8% for Ch. nootkatensis, 78.4±3.9% for Ch. formosensis, 89.1±4.1% for Ca. formosana and 9.7±2.2% for P. taiwanesis. Average weight loss for blocks of each wood after the termites' feeding was 5.0±1.1% for T. plicata, 1.3±0.3% for Ch. nootkatensis, 5.1±0.5% for Ch. formosensis, 3.0±0.5% for, and 29.1±3.1% for P. taiwanesis. Average damage index of each wood was 7.9, for T. plicata, 9.4 for Ch. nootkatensis, 7.6 for Ch. formosensis, 8.9 for Ca. Formosana, and 0.2 for P. taiwanesis. Termite mortality was significantly correlated with the following parameters of the test wood blocks: weight loss (r=-0.92, P＜0.01) and damage index (r=0.91, P＜0.01). Among the 5 test woods, Ch. nootkatensis had the best termite resistance, whereas P. taiwanesis was the least resistant, with the remaining species in between those two. For decay tests, the results showed that 2 brown rot fungi (F. pinicola and Gloeophyllum sp.) caused significant average weight loss in P. taiwanesis compared to the other woods. The white rot fungus, C. australe, caused significant average weight loss in C. nootkatensis and P. taiwanesis compared to other woods, but it did not significantly affect any other test woods in terms of average weight loss of wood.

關鍵字

木材 ； 白蟻 ； 腐朽菌 ； 抗蟻性 ； 耐腐性

並列摘要

Two imported Canadian, Thuja plicata and Chamaecyparis nootkatensis, and 3 domestic wood materials, Chamaecyparis formosensis, Calocedrus formosana, and Pinus taiwanesis (control treatment), were tested according to ASTM D 3345-74 and D 2017-81 methods to determine their natural resistance to the Formosan termite (Coptotermes formosanus) and 3 wood rotting fungi (Fomitopsis pinicola, Ganoderma australe, and Gloeophyllum sp.), respectively. The results showed that the mortality of Formosan termites after feeding on different woods for 4 wk was 79.2±4.2% for T. plicata, 98.2±1.8% for Ch. nootkatensis, 78.4±3.9% for Ch. formosensis, 89.1±4.1% for Ca. formosana and 9.7±2.2% for P. taiwanesis. Average weight loss for blocks of each wood after the termites' feeding was 5.0±1.1% for T. plicata, 1.3±0.3% for Ch. nootkatensis, 5.1±0.5% for Ch. formosensis, 3.0±0.5% for, and 29.1±3.1% for P. taiwanesis. Average damage index of each wood was 7.9, for T. plicata, 9.4 for Ch. nootkatensis, 7.6 for Ch. formosensis, 8.9 for Ca. Formosana, and 0.2 for P. taiwanesis. Termite mortality was significantly correlated with the following parameters of the test wood blocks: weight loss (r=-0.92, P＜0.01) and damage index (r=0.91, P＜0.01). Among the 5 test woods, Ch. nootkatensis had the best termite resistance, whereas P. taiwanesis was the least resistant, with the remaining species in between those two. For decay tests, the results showed that 2 brown rot fungi (F. pinicola and Gloeophyllum sp.) caused significant average weight loss in P. taiwanesis compared to the other woods. The white rot fungus, C. australe, caused significant average weight loss in C. nootkatensis and P. taiwanesis compared to other woods, but it did not significantly affect any other test woods in terms of average weight loss of wood.

並列關鍵字

wood ； termite ； wood-rotting fungi ； termite resistance ； decay resistance