代替 Energy 資源으로서의 Biomass 資源 增産 硏究 (Ⅰ) : 休耕地의 生産性 活用 戰略 Utilization of the Resting Cropland for Production = Increase in Production of Biomass as a Substitute Energy Sources

국문 초록 (Abstract)

代替에너지 資源의 生産增大를 爲한 短伐期 林業의 施業的 導入이란 側面에서 休耕地를 對象으로 한 此後 資源 生産性 增大를 期待하는 目的 基礎로 慶熙大學校 演習林(京畿道 廣州郡 退村面 陶水 3里)內 立地的 條件이 다른 3個 休耕跡地에 植栽密度 및 光度處理, 揷穗調製樣式과 發根促進處理에 따른 試驗植栽調査區(1m×10m) 12個區를 設置, 1年生 버드나무 揷木 幼苗의 生長 關係伸長生長, 各器官別 重量生長, 活着率, T/R率)를 調査하였다. 生長調査에서 苗木活着率은 全體的으로 各 處理間 平均 94∼97%로 높게 나타났는데, 地理的 土質性이 良好하거나(area Ⅱ: 97%), 光度가 높을수록(R.L.I 100% : 97%)에 比해 낮게 나타났다. 또한 苗木의 T/R率은 大體로 낮았으나 그 變異幅(1.95∼7.75)이 컸고, 各 處理間의 植栽密度間에 있어서 그 變化 樣狀은 一定치 않았다. 植栽地 區分에 있어서는 area Ⅲ이 第一 낮은 값(1.95)을 나타냈고, 光度處理에서는 R.L.I 100%(1.95)가, 그리고 揷穗調製樣式의 type B(3.67g)와 IBA處理區는 他處理區에 比해 낮았다. 또한 苗木의 重量生長은 全體的으로 植栽密度가 높거나, 被陰狀態가 强할수록 苗木生長은 漸次 減少하는 一定한 傾向이었다. 그리고 揷穗調製樣式의 type A(3.40g)+C(3.50g)는 type B(1.40g)보다 높았고, IBA 處理區는 無處理區에 比해 約 2倍 以上이 낮게 나타났다. 以上의 結果에서 버드나무의 높은 內的 發根性과 自然被陰이나 土質的 條件과 같은 制限 環境 要因에 對한 施業的 補完이 適用될 수 있다면 資源林 造成에 따른 休耕地의 生産性 轉換은 可能할 것으로 判斷되었다.

다국어 초록 (Multilingual Abstract)

The purpose of this research was to increase the productivity of resource on the cropland through induction of the forest of short period for final cutting. This research was carried out to investigate the influences of planting density, cutting types of basal area, and treatment of luminosity and acceleration of root-out on the elongation, weights by each part, the ratio of tree to root at the nursery of 1-year old Salix seedling in the research forest of Kyung Hee Univ. located in Toichon-myun, Kwangju-gun, Kyunggi-do. In the inquiry of growth, the ratio of survival root was indicated that the range of 94-97% among each treatments and was increased with increasing luminosity and soil characteristics. On the other hand, the cutting type B(95%) and IBA non treatment(955k) indicated that the lower than other treatment(96-97%). Also, the ratio of tree to root of seedling was generally the lowest among total treatments, but standard error of the mean was 1.95-7.75. In the planting density, an aspect of change of the ratio of survival roots among each treatments was not constant. Area Ⅲ indicated that the lowest value(1.95) in the planting area, and luminosity 100% treatment district(1.95), cutting type B district(3.67) and IBA treatment district was the lower than other treatment district. Growth of seedlings was decreased with increasing planting density and the state of shading. Cutting type A(3.4g) and C(3.5g) was the higher than type B(1.4g) and IBA treatment district was the lower than non-treatment district. Therefore, if we can apply to the strong root-out power and natural shading of Salk on the rooting cropland, it is estimated that productivity conversion of rooting cropland by establishment of the forest of resource was possible enough.