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질소 (窒素) 시비 (施肥)와 간벌 (間伐)이 잣나무 당년생 침엽과 소지의 생장 및 양분에 미치는 영향
손요환(Yo Whan Son),황재우(Jae Woo Hwang),이도형(Do Hyeung Lee),김종성(Jong Sung Kim),양수영(Soo Young Yang) 한국산림과학회 2001 한국산림과학회지 Vol.90 No.1
To investigate the effects of nitrogen fertilization and thinning on growth and nutrition of current-year needle and twigs in Pinus koraiensis we treated two clone banks with three levels of nitrogen fertilizer in Yongin and Chuncheon, and also thinned two plantations with three intensities in Yangpyeong. The fertilization and thinning effects greatly varied depending on study sites and stand ages. However, dry weights of needle and twig increased following low nitrogen fertilization in older stands. Moderate thinning increased dry weight and nitrogen concentration of twigs in the 12-year-old stand.