浙江天童国家森林公园栲树果实大小特征的分析

Analysis on Fruit Properties of Castanopsis fargesii in Tiantong National Forest Park

对浙江天童国家森林公园内不同栲树个体生产的果实大小特征进行了研究和分析。研究结果表明该地区栲树个体生产的果实间有明显差异(p<0.01)。栲树果实大小有较大的变异,果实平均高度和平均宽度分别为1.141±0.11cm和 0.984±0.12cm,变异幅度分别是9.64%和12.19%;果实高宽比为0.868±0.122,变异幅度为14.06%;栲树果实的平均重量为0.682±0.183g,重量变异幅度最大,约为26.83%,栲树果实重量相差6倍左右。因子分析表明,栲树果实的宽度和重量是最重要的性状指标;栲树果实大小性状的变异与其在群落中的更新策略有关。

Studies and analysis on the fruit properties of Castanopsis fargesii in Tiantong National Forest Park (TNFP) resulted that the fruits had significant difference of size, fruit weight could vary 6 times. The mean fruit height, width, ratio of height to width and weight were respectively 1.141±0.11cm, 0.984±0.12cm, 0.868±0.122 and 0.682±0.183g, among which fruit weight varied the most (CV=26.83%), followed by the ratio of fruit height to width (14.06%) and fruit width (12.19%) and height (9.64%). Factorial analysis showed fruit width and weight were the most important index of C. fargesii. Studies showed the change of fruit size of C. fargesii was related to its regeneration in the forest.