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测定森林树木叶面积的最适叶片数是多少?
高思涵,葛珏希,周李奕,朱宝琳,葛星宇,李凯(),倪健()
What is the optimal number of leaves when measuring leaf area of tree species in a forest community?
GAO Si-Han,GE Yu-Xi,ZHOU Li-Yi,ZHU Bao-Lin,GE Xing-Yu,LI Kai(),NI Jian()

图5. 两个树种叶面积的随机抽样均值和95%置信区间及其差异性检验。A, C, 全部叶片样品。B, D, 中等胸径等级、底部叶片样品。叶面积图上的黑色线代表随机抽样均值, 红色线代表95%置信区间; 淡蓝色区块表示差异性检验显著区域, 亦即该区块最右侧的取样数量即为叶片最适取样数量。

Fig. 5. Mean of random sampling, 95% confidence interval and significant test of leaf areas of two tree species. A, C, All leaf samples. B, D, Leaf samples of medium diameter class and bottom sampling direction. The black line of the leaf area plot indicates the mean value of random sampling, and the red line indicates the 95% confidence interval; the light blue block is the area of significant difference, indicating that the sample size of the right position of the block is the optimal sampling number of leaves. Ss, Schima superba; Lf, Liquidambar formosana.