关键词: 地形, 桤木, 人工林, 胸径, 树高, 树干公定容重

Abstract: An orthoganal design with four terrain factors under two levels was carried out to systematically analyze the law of variation on diameter, height and trunk's basic volume weight of 13-year-old Alnus cremastogyne from plantation. The results showed that slope form was the most important factor which influenced diameter, height and trunk's basic volume weight of Alnus cremastogyne from plantation and the slope with less than 45 degree influenced the diameter and height insignificantly. As to diameter growth and trunk's basic volume weight, slope aspect is the second important influencing factor and position on the slope is the third one; as to height growth, position on the slope is the second important influencing factor and followed by the slope aspect.

Key words: terrain, Alnus cremastogyne, diameter, height, trunk's basic volume weight