桂西南13年生大叶栎人工林生长规律分析

Growth Regularity of 13-Year-Old Quercus griffithii Plantation in Southwest Guangxi

摘要: 以桂西南13年生大叶栎人工林为研究对象，采用树干解析法研究其生长规律。结果表明，13年生大叶栎人工林平均胸径、平均树高和平均单株材积分别达到15.85 cm、13.92 m和0.1373 m³，林木胸径和树高生长都以前8年最快，此后随林龄增加逐渐下降；材积生长在8年生时进入速生期，随后至13年生始终保持较高的增长速度。因此，大叶栎在桂西南具有较强的生长适应性和速生特性，研究结果为桂西南地区大叶栎人工林的合理发展提供了依据。

Abstract: The growth rule of 13-year-old Quercus griffithii plantation in Southwest Guangxi was studied by analytical tree method. The results showed that the average diameter at breast height (DBH), height and volume of stand came to 15.85 cm, 13.92 m and 0.1373 m³, respectively. The tree of DBH and growth of height were the fastest in the previous 8 years, and then gradually decreased with the increase of the forest age; the growth of volume entered the fast-growing period at 8-year-old, and then maintained a relatively high growth rate until 13-year-old. Therefore, Quercus griffithii has strong growth adaptability and fast-growing characteristics in southwest of Guangxi. The results provide a basis for the reasonable development of Quercus griffithii plantation in southwest of Guangxi.