리기다소나무의 높이別 年輪幅에 나타나는 生長의 패턴에 關한 硏究 = Growth Patterns Appearing in Annual Ring Width at Different Height of Pinus rigida Mill

국문 초록 (Abstract)

本硏究는 리기다소나무를 資料로하여 林木의 높이別 年輪幅의 生長패턴을 해석하고 또한 植栽密度가 年輪生長에 어떤 影響을 미쳤는가를 調査한 것이다. 그 結果를 要約하면 다음과 같다.
1. 斜面方向系列의 年輪幅生長패턴은 樹幹內에 存在하는 營養勾配와 密接한 關係가 있는 것으로 調査되었다.
2. 垂直方向의 系列은 年輪幅의 變化가 아주 不規則한 것으로보아 外部境境 要因에 依한 生長의 變化가 反映된 것으로 생각되며 固有한 生長패턴이 없는 것 같다. 그러나 年輪幅增減추세를 보아 植栽密度別로 樹冠競合의 差가 3年程度가 있는 것으로 調査되었다.
3. 水平方向의 系列은 斜面方向 및 垂直方向 系列의 性質을 同時에 가지고 있고, 特히 根株部와 胸高位置의 年輪幅增減 추세를 볼 때 植栽密度別 樹冠競合의 差가 역시 3年程度 있는 것으로 調査되었다.
4. 垂直方向 및 水平方向系列의 年輪幅增減추세를 보아 密植地는 8年生때 普通植栽地는 11年生때 間伐로서 울폐도 調節이 要求되었다.

다국어 초록 (Multilingual Abstract)

These studies were carried out to know the growth patterns appearing in annual ring width at different heights and the influence of planting density on growth in annual ring of Pinus rigida Mill.
The results are summarized as follows:
① The coefficient correlations between the growth patterns appearing in annual ring width of oblique sequence and the nutrition slope in stem showed to be high significant by stand.
② The vertical sequence did not have a peculiar growth pattern owing to be irregular in the variation of annualring width, and it should be affect on the variation of growth by emironment factors, but 9 conclude that the difference of the crown conflict of different planting density was recognized to be the period of 3 years by the tendency of the increase and decrease in annual ring width.
③ Horizontal seguence contained both its quality of oblique sequence and vertical sequence, and also the difference of the crown conflict of different planting density was recognized to be the period of 3 years, as it was shown the tendency of the increase and decrease in annual ring width of the part of stump and the position of breast height.
④ The proper thinning time was showed to be the period of 8 years in case of closely spaced plantation by the tendency of the increase and decrease in annual ring width of vertical sequence and horizontal sequence, and then we should be control the crown density.