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題名 | 臺灣主要經濟樹種材質之基礎研究(11):長尾尖櫧, 光腊樹及臺灣櫸之單面與全面水分移動速度之變異性 |
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作者 | 王松永; 夏榮生; | 書刊名 | 林產工業 |
卷期 | 9:4 1990.12[民79.12] |
頁次 | 頁13-29 |
分類號 | 436.18 |
關鍵詞 | 水分; 光腊樹; 材質; 長尾尖櫧; 移動; 速度; 經濟; 臺灣; 臺灣櫸; 樹種; |
語文 | 中文(Chinese) |
中文摘要 | 本研究係探討長尾尖儲、光臘樹及台灣櫸等闊葉樹材在單株內之單面水分移動速度,全面水分移動速度等在樹幹內橫向及軸向變異性,結果如次:(1)單面水分移動速度在橫向變異性可歸納為四個類型,但在軸向可歸納為三個類型。(2)全面水分移動速度在橫向變異性,在>F.S.P.及<F.S.P.,均可歸納為四個類型,而在軸向則可歸納為三個類型。(3)單面水分移動速度的有橫切面>弦切面>徑切面,其比值各為長尾尖椅為8.8:1.3:1,光臘樹為5.8:1.4:1,台灣櫸為是4.9:1.4:1。(4)三種濶葉樹之單面水分移動連度有長尾尖儲>光臘樹>台灣櫸之傾向。(5)三種切面之單面水分移動速度均會隨容積密度增加而呈直線狀減低,各可以迴歸直線式(3)~(5)表示。(6)全面水分移動速度'>F.S.P/<F.S.P.值各為長尾尖構:167.2,光臘樹:116.0,台灣櫸113.8。 |
英文摘要 | The variation in the transversal and axial direction of moisture movement in one and three dimensions of Longleaf evergreen chinkapin, Griffiths ash and Taiwan zelkova in a single trunk were investigated. The experimental results are summarized as follows: (1) The speed of moisture movement in one dimension along the transversal direction can be classified into four types. However, there are three types variation in the axial direction. (2) The speed of moisture movement in three dimension along the transversal direction, included of > F.S.P. and < F.S.P. case, can be classified into four types. However, there are three types variation in the axial direction. (3) The speed of moisture movement in one dimension showed the decreasing tendency as follows: cross section> tangential section> radial section. The speed ratio of three section are 8.8: 1.3 : 1 for Longleaf evergreen chinkapin, 5.8: 1.4: 1 for Griffiths ash and 4.9: 1.4 :1 for Taiwan zelkova (4) The speed of moisture movement in one dimension of three wood species showed the decreasing tendency as follows: Longleaf evergreen chinkapin > Griffiths ash > Taiwan zelkova. (5) The speed of moisture movement in the three sections was negative correlated with bulk density. The higher the density, the slower the speed. The relationship was express巴d by regression (3) ~ (5). (6) The speed of moisture movement in three dimensions above FSP was significantly different from that below the FSP. Among three species, the difference was greatest in Longleaf evergreen chinkapin. The speed ratio of> F.S.P./< F.S.P. are 167.2 for Longleaf evergreen chinkapin, 116.0 for Griffiths ash and 113.8 for Taiwan zelkova. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。