Analysis of the Cost of Planting and Transplanting of 15 Species of Taiwan Native Landscape Trees.

• Main Authors: Li-Hsun Chen, 陳麗薰
• Other Authors: Chiu-Cheng Liao
• Format: Others
• Language: zh-TW
• Online Access: http://ndltd.ncl.edu.tw/handle/72513113578939802879

碩士 === 國立嘉義大學 === 森林暨自然資源學系研究所(Graduate Institute of F === 98 === 【Abstract】 This research aims to study the planting costs for 15 native species of greenery plants in Taiwan which may beautify the landscape. It analyzes the planting costs of the sellers. The costs include: 1. Variable Costs: costs of soil preparation, fertilizer & insecticide, seedlings, planting, holding, irrigation, weeding, pruning etc. 2. Fixed Costs: apportioning of land rent, personnel, factory equipment, machine depreciation and so on. The planting cost in the first year is higher because it includes the cost of seedlings, soil preparation, planting, and holding that other years of planting do not need. The planting cost is greatly reduced by the fifth year because the grown up plants only need irrigation, trimming and fertilization. Only when damage is caused by blight or typhoons will extra expenses be incurred. The sales cost of trees includes planting costs and transplanting expenses. Generally speaking, traditional tree transplanting only cuts the root once. When cutting the root, four or five side roots are left for holding. The root balls are dug in around 45 centimeters deep. A covering net is used to bind the root balls and protect them from the sun. When it comes to transplanting two months later, the side roots which had been left and the straight roots below should be cut again, and the branches should be strongly cut to enhance the tree’s survival rate. However, its highest survival rate is only 75 percent and the shape of the tree becomes ugly. Whole Tree Transplanting is transplanting the whole tree. It takes more than 4 months to transplant a tree. The root cutting is divided into two stages. The interval of the two cuttings is two months. The tree shape is beautiful after transplanting; the effect on landscape takes no time and the survival rate is 100 percent. The cost of traditional tree transplanting is NT$5,192 for trees of 8 to 12 centimeters’ diameter and NT$8,219 for trees of 20 to 24 centimeters’ diameter. The cost of Whole Tree Transplanting is NT$7,760 for trees of 8 to 12 centimeters diameter and NT$12,086 for trees of 20 to 24 centimeters’ diameter. The price of Whole Tree Transplanting is higher and the process is more time-consuming. However, from the viewpoint of management, Whole Tree Transplanting is the most economical for its survival rate reaches 100 percent and make-up planting is not needed. Therefore, the sales costs of the trees are calculated with an annual interest of 3 percent on the planting cost and with later additions to the transplanting cost of this method. The bigger the trees are, the longer the raising time takes; and of course, the higher the planting and transplanting cost. The common causes of the low survival rate of public engineering on landscape greenery beautification are as follows: 1. Firm owners rush the tree transplanting on amlount of the time limit of the contract. 2. Seedling root balls are not well protected and are broken during transplanting. 3. The watering is not done properly after transplanting, the crucial period of survival is missed. 4. Contract undertakers are not experts in planting, transplanting and cost calculating; the contract price is lower than the overall cost. When the loss is too great to afford, they escape the responsibility by giving up the last payment and fail to check the effects. Therefore, inviting experts in public engineering on landscape greenery beautification for professional suggestions about the evaluation and selection of planting tree species, shapes and prices is suggested. Experts will assess the managing conditions of contract undertakers and select the most beneficial firm owners. Thus, it will not only take care of the cost and reasonable profits of firm owners, but also the smooth process of landscape greenery beautification works.