The Function of Pioneer Plants Root System for Slop Stability

• Main Authors: YEN,PEI -WEN, 顏佩雯
• Other Authors: TANG,XIAN-BO
• Format: Others
• Language: zh-TW
• Published: 2004
• Online Access: http://ndltd.ncl.edu.tw/handle/60342078109599630846

碩士 === 中華大學 === 營建管理研究所 === 92 === Given the domestic development of soil and water conservation and ecological concern; in terms of slope-protection, increasingly conscious of the influence of vegetation on slopes for which adopting the original vegetation on the slop recovery is necessity and feasibility. This research is focused on the influence of plant root system on the slope environment along the developed road construction. As taking the pioneer plants frequently observed in Hsinchu area: Broussonetia papyrifera and Mallotus paniculatus for example; and investigate into their growing characteristics, the distribution and the pulling resistance of their root system; and also to discuss their relativity, so as to generalize on the root-system function of these plant species. Through the research, we conclude that Broussonetia papyrifera belongs to the root system of Yan Jeng Pin (1973) Pinus Luchuensis Wayr (琉球松) family; and thus are with abundant horizontal or protruding root system; while Mallotus paniculatus belongs to the second type (亞型) of Liguidambarformosanohance (楓香) root system of Pinus Luchuensis Wayr (琉球松) family. Both these tree species are equipped with soil-stabilizing function. After analyzing the influencing factors such as the pulling resistance, we discover that “maximum of basal diameter” has the conspicuous relativity. With the premise of not to invalidate the observation, “maximum of basal diameter” should be listed as the major factor for calculating the pulling resistance. The regression equations of pulling resistance on maximum of basal diameter are shown as following： Broussonetia papyrifera： The regression equations of pullinf resistance on maximum of basal diameter are shown as following： Broussonetia papyrifera： Fa=10.141e3.492Da R2=0.8413 ** 0.10≦Da≦1.20 Mallotus paniculatus： Fb=20.971e1.537Db R2=0.793 ** 0.10≦Db≦1.5 Fa、 Fb：pulling resistance（kg） Da、 Db：maximum of basal diameter（cm）