Stand structure and regeneration of Quercus mongolica forests in Korea

Abstract

This study was conducted to analyze the stand structure of Quercus mongolica forests in Korea and to understand their regeneration dynamics. Forest community types of Mt. Joongwang, Mt. Chiri and Mt. Worak were classified into 7 groups by TWINSPAN. Q. mongolica appeared mainly on mid to upper slope positions. Acer mono, A. pseudo-sieboldianum, Maackia amurensis and Tilia amurensis are commonly associated with Q. mongolica. The density and basal area of Q. mongolica decreased as the stand developed into pole and early-mature stage forests. Total number of species increased as stands developed. Q. mongolica is an early invader of disturbed areas and dominates the stand, which means that this species should be considered as a pioneer species rather than a climax. Germination rate of scattered acorns was very low but fallen leaves over the acorns protected them from animal feeding and raised the germination rate. Among the seedlings of Q. mongolica, more than 70% originated from seedling sprouts. They showed a higher growth potential than seedlings, and their heartwoods are decay resistant. Therefore, their number and size were very important factors in determining the species composition of future forests after clearcutting.