查詢結果分析
相關文獻
- A Study of the Tree and Wood Characteristics of Young Pedigreed Jack Pine
- 造林木材質之組織特性與力學性質的評價(1)--柳杉、杉木之組織特性與力學性質
- 木材之表面特性
- 造林木加工利用評估--旋切杉木單板
- 造林木邊材乙醯化後之耐腐性及抗白蟻性
- Adsorption Capacity of Heavy Metals in Taiwan Sediments
- 乾濕梅雨季東亞環流特性之研究
- 與木材光變色有關之抽出成分的反應機制及其防止方法之探討
- Effect of Specific Gravity and Radial Growth Rate on The Pilodyn Pin Penetration for Standing Jack Pine Trees
- 臺北市廢棄煤礦礦區棄土場植生特性之研究
頁籤選單縮合
題 名 | A Study of the Tree and Wood Characteristics of Young Pedigreed Jack Pine=Jack Pine 幼林木及木材特性之研究 |
---|---|
作 者 | 彭武財; | 書刊名 | 林產工業 |
卷 期 | 11:4 1992.12[民81.12] |
頁 次 | 頁7-28 |
分類號 | 436.18 |
關鍵詞 | 木材; 林木; 特性; 譜系Jack Pine變方分析測驗; Duncan's複變域測驗立木特性; 木質特性; 相關係數; Pedigreed Jack pine; ANOVA test; Duncan's multiple range test; Correlation coefficient; Tree characteristics; Wood characteristics; |
語 文 | 英文(English) |
中文摘要 | 本研究係為測求及比較人工栽植之10遺傳族類,20年生幼Jack Pine之實際立木及木質構造特性差異為目的。各族類鋸倒無存缺陷之立木5株,並隨即量測各株之樹高並鋸取約5公分厚之圓板於根際,1.5m、3.0m、6.0m及9.0m等高階處,裝入塑膠袋中,於實驗室中求其立木及木質之特性。尤其後者切取各圓盤之髓心,第5、第10年齡(輪)及外週邊處之木材以求者。表1所列係為立木特性之變數如樹高(HT)、徑長率(RG-R)、樹皮厚(B-TH)、木材含水率(MC)及心材率(HTW-P)之全般統計數字。表5所陳者為木質特性之變數如木材比重(SP-GR)、假導管長度(T-L)、假導管直徑(T-D)、春材細胞膜厚(EW-CWT)及秋材細胞膜厚(LW-CWT)之全般統計數字。以變方分析及DUKCAN'S複變域測驗得知所有立木特性中之變數於諸族類及諸高階間均呈極顯著之差異如表2、3所列及圖1、2、3、4、5、6、7及8所示。又所有木質特性中之變數於諸族類、諸高階及4齡處間亦呈極顯著之差異如表6所列及圖9、10、11、12、13、14、17及18所示。EW-CWT之變數於諸高階之間則呈例外如衰6所列及圖15及16所示。立木特性之變數之交互作用得知,即HT與RG-R間及的-R與B-TH、MC、HTW-P間,均呈極強度之正或負之相關關係。但HT與B-TH、MC、HTW-P間,則無呈顯著如表4所列。至於木質特性之變數之交互作用,則SP-GR、T-L、T-D、EW-CWT、LW-CWT間皆相互呈極強烈之的相關關係如表7所列。 |
英文摘要 | This study was intended to compare and to evaluate the true characteristics of growing trees and their wood structures for ten genetic families, 20-year-old pedigreed jack pine planting in the South-West of Ontario. Five standing trees of defect free each family, total ten families, were fallen randomly from the different sites. Five discs each of approximately 50 mm thick were removed (butt, 1.5m, 3.0m, 6.0m and 9.0m height levels) from every sampled tree right after its height was measured. The wood of four ring positions (pith, 5th and 10th rings, cambium) were then removed from every disc radially. Table 1 tabulated the overall statistical results of tree characteristics such as the HT, GR-R, 8-TH, wood MC and the HTI-P, and Table 5 listed the results of wood characteristics such as the SP-GR, T-L, T-D, EW-CWT and the LI-CIT respectively. The results of ANOVA and DUXCAN"S Multiple Range tests indicated that the all variables in tree characteristics varied significantly within or between families and height levels as indicated in Table 2 and 3; Figure I, 2, 3, 4, 5, 6, 7 and 8. The variables of wood characteristics also varied significantly within or between families, height levels and the four ring positions as tabulated in Table 6, and illustrated on Figure 9, 10, 11, 12, 13, 14, 17 and 18, with an exception of the variable of EW-CWT in the five levels, as shownon Table 6, Figure 15 and 16. The interaction between variables of tree characteristics was found that there were strongly (positive and negative) correlated each others for the HT and the RG-R; the GR-R and the B-TH, MC, HTW-P. The HT and the B-TH, Me, HTW-P however, did not correlated (Table 4). For the case of wood characteristics, the variables of SP-GR, T-L, T-D, EW-CWT and LW-CWT had strong correlations (Table 7). |
本系統中英文摘要資訊取自各篇刊載內容。