Potential plus-trees have teen classified in plantation of Acacia confusa in Xihuanshan Forest Park in Chaoyang district of Shantou city, based on the method of small sample plot. The main 10 factors were determined in the survey including tree height, diameter in breast height, tree crown and so on. The results show that the suitable range of investigation was 15-20 meters, the diameter in breast height, stem volume, tapering, stem straightness, crown width and lateral branches had greater contribution rate to the plus-tree selection of Acacia confuse than other factors. The calculated results show that the lowest borderline of plus-trees selection was 63.1 points, of the five per-selected trees, four potential phis-trees were selected as plus-trees, and the selection rate was 0.7%.%应用样圆标准地法在汕头市潮阳区西环山森林公园的台湾相思人工林中选优,按预定要求对树高、胸径、冠形等10个因子进行测定.分析结果表明,样圆较合理的调查半径在15～20m,胸径、材积、尖削度、通直度、冠幅、侧枝粗则对台湾相思选优具有较大的贡献量.计算得出综合评分入选最低分数线为63.1分,5株预选树最终有4株确定为优树,选择率为0.7％.
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