【摘要】 对2021—2023年南宁树木园伐区桉树萌芽林的调查数据进行方差分析和聚类分析，为桉树萌芽林经营管理提供参考。结果表明：同龄组在不同地点间，林分单位面积的产材量、林木数量及单株产材量均有显著差异。龄组Ⅰ（4 a≤林龄<6 a）中，单位面积产材量最高的是田东县(179.25 m³·hm^?2)；龄组Ⅱ（6 a≤林龄<8 a）中，单位面积产材量较高的是苍梧县(183.00 m³·hm^?2)和隆安县(187.95 m³·hm^?2)；龄组Ⅲ（8 a≤林龄<10 a）中，单位面积产材量最高的是横州市(242.05 m³·hm^?2)。不同龄组间的单位面积产材量、单株产材量均随龄组增大而增大，龄组Ⅱ、Ⅲ的单位面积产材量和单株产材量均极显著高于龄组Ⅰ；年均单位面积产材量随龄组增大而减小，各龄组间存在极显著差异；各龄组间的单位面积林木数量差异不显著。南宁树木园的单位面积产材量总体不高，需根据立地条件制定合理的抚育经营措施，并加强管理以提高产量。萌芽林适宜密度为1 200～1 600株·hm^?2，合适的采伐林龄为6～8 a。更多还原

【Abstract】 The survey data of Eucalyptus sprouting forest in Nanning Arboretum cutting area from 2021 to 2023 were analyzed by variance analysis and cluster analysis to provide reference for the management of Eucalyptus sprouting forest.The results showed significant differences in timber yield per unit area,tree density,and timber yield per tree among different locations within the same age group.In age group Ⅰ （4 years≤stand age<6 years）,had the highest timber yield per unit area (179.25 m³·hm^?2).In age group Ⅱ （6 years≤stand age<8 years）,Cangwu County (183.00 m³·hm^?2) and Long’an County (187.95 m³·hm^?2) had the higher timber yield per unit area.In age group Ⅲ （8 years≤stand age<10 years）,Hengzhou City had the highest timber yield per unit area (242.05 m³·hm^?2).Timber yield per unit area and timber yield per tree increased with age group,with age groups Ⅱ and Ⅲ showing significantly higher timber yields per unit area and per tree compared to age group Ⅰ.The average annual timber yield per unit area decreased with age group,and there were significant differences among all age groups.However,there were no significant differences in tree density per unit area across the age groups.Overall,the timber yield per unit area in Nanning Arboretum is relatively low,and it is necessary to formulate reasonable management measures according to site conditions and strengthen management to increase yield.The suitable density of sprouting forest was 1 200～1 600 plants·hm^?2,and the suitable cutting age was 6～8 years.更多还原