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題名 | Study on Tree Characteristics and Wood Qualities of 14-Year-Old Plantation Jack Pine=14年生傑克松之立木特徵及其材質之研究 |
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作者 | 彭武財; | 書刊名 | 林產工業 |
卷期 | 13:2 1994.06[民83.06] |
頁次 | 頁215-239 |
分類號 | 436.18 |
關鍵詞 | 立木特徵變數--樹高; 直徑; 徑向生長速度; 皮厚; 皮含率; 心材含有率; 生材含水率; Tree characteristics variables-Tree height; Disc diameter; Radial groth rate; Bark thickness; Bark content; Heartwood content; Green wood moisture content; |
語文 | 英文(English) |
中文摘要 | 本研究為探討如何,從眾多品系林木中選擇具有特優性質者作為林木改良用目的,並從諸多特性變數問之交互作用求得其各相關程度。代表10品系之14年生傑克松(Jack pine)造林木特徵及其木材性質之諸變數作分析與比較結果如表1所列。其中,特優樹高(T. H.)者得自第11102品系立木;特優直徑(D. D.)及徑向生長速度(G. R.)者得自第11111品系立木;特優皮厚(B. T.)及皮含率(B. C.)者各得自第11113及11102品系立木;特優心材率(HTWO.)者得自第13212品系立木;特優比重(S. G.)者得自第14205品系立木;特優管胞長(T. L.)及假管胞寬(T. D.)者得自第11111品系立木。除了變數皮含率(B. C.)外,所有變數在10個品系,13高階及3徑向年輸部均各呈極顯著之差異。第2表列舉各變數間之相關程度。在10個品系林木之各變數之垂直方向分布情形即如圖1~9所示,而在其徑向分布則如圖10~13所示。圖14為10 族類木之各平均樹高及直徑分布圖。 |
英文摘要 | This study was aimed to introduce a way of selection superiorly characterized trees from different families for the tree improvement purpose. The determination of the degrees of correlations among tree characteristic and wood quality variables based on their respective interactions was also performed. The variables of tree characteristics and wood qualities of 14 year-old jeck pine plantation representing ten familes were analyzed and compared as in Table 1 tabulated. Superior tree height (T.H.) was found on the trees of Family #11102; disc diameter (D.O.) and radial growth rate (G.R.) were on the trees of Family #11111; bark thickness (B .T.) and bark content (B .C.) were on the trees of Family #11113 and #11102; heartwood content (HTWD .) was on the trees of Family #13212; wood specific gravity (S.G.) was on the trees of Family #14205; tracheid length (T.L.) and its diameter (T.D.) were on the trees of Family #11111 respectively. All variables were tested to be significantly varied among ten families, thirteen height levels and three radial ring positions, with the exception of variable B.C. which was tested to be not quite significant. Table 2 tabulated the degrees of correlation among varialbles based on their interactions. The overall trends of vertical distribution of each variable in ten families were drawn as Figure 1-9, and their radial distributions were illustrated on Figure 10-13. |
本系統之摘要資訊系依該期刊論文摘要之資訊為主。