조림 묘령에 따른 고로쇠나무 조림목의 생장 및 수관경쟁 특성
The Growth Performance and Crown Competition of Acer pictum subsp. mono according to Seedling Age in Plantation
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본 연구는 고로쇠나무 조림 시 묘령이 수목의 생장과 수관경쟁에 미치는 영향을 이해하고자 수행되었다. 3년생 조림지에서 1년생 조림지 보다수고, 흉고직경, 수관면적은 유의적으로 높았으며, H/D율은 3년생 조림지에서 낮게 나타나 수고생장 대비 직경생장이 유도되는 것으로 나타났다. 조림지별 수목의 총연륜생장은 조림 묘령에 따라 유의한 차이를 나타내 직경생장에 영향을 준 것으로 해석된다. 조림지 임분의 수관경쟁 정도를평가할 수 있는 수관경쟁지수(CCF)와 수관경쟁률(CCR) 또한 수목의 수고, 흉고직경, 연륜생장 특성 등과 동일한 경향을 나타내었다. 본 연구결과를종합적으로 고려할 때, 고로쇠나무 생장의 측면에서 3년생 묘목 식재의 장점이 기대되며, 이러한 연구결과는 조림 후 수액채취 시기 및 채취량등 경영의사결정에 활용 될 수 있을 것으로 기대된다.
Abstract
This s tudy was conducted to understand the e ffect o f the seedling ag e of Acer pictum subsp. mono on the growth and crown competition in plantation. The tree height, diameter at breast height and crown area were significantly higher in the 3-year-old plantation than in the 1-year-old plantation. The H/D ratio decreased as the planting seedling age increased, and it was found that diameter growth was induced compared to height growth. It was interpreted that the total annual growth of trees by plantation sites showed a significant difference according to the planting seedling age, which influenced the diameter growth. The Crown Competition Index (CCF) and the Crown Competition Rate (CCR), which can evaluate the degree of crown competition in the plantation stand, also showed the same tendency such as tree height, diameter at breast height, and annual ring growth. In conclusion, planting of 3-year-old seedling is expected to b e advantag eous in terms of the g rowth of A. pictum subsp. mono, and the results of this study are expected to be used in management decisions such as the timing and amount of sap collection in plantation.
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