尾叶桉和巨尾桉叶面积的测算模型研究(摘要)(英文)

目的]为构建尾叶桉和巨尾桉叶面积优化测算模型。方法]以尾叶桉和巨尾桉为研究对象,对其叶面积与几个叶形特征值的相关性进行了研究。结果]2个树种的叶形特征值存在一定差异,各自的叶面积与叶长、叶宽、叶周长、叶长×叶宽、叶的长宽比、形状因子等均存在显著性相关,可以与叶面积构建回归模型。其中,利用尾叶桉和巨尾桉的叶长×叶宽值构建的2个叶面积测算模型效果最好,具有较高的精度和实际应用价值。结论]该研究为这2个树种的研究提供了一种简便、有效的叶面积测算方法。

Leaf Area Calculation Model of E.urophylla and E.grandis×E.urophylla

Objective] The aim was to build an optimal leaf area measurement model of E. urophylla and E. grandis×E.urophylla. Method] The correlation between leaf area and leaf's eigenvalue of E. urophylla and E. grandis×E.urophylla were studied. Result] There was certain difference in leaf characteristics values between the 2 species. The leaf areas of E. urophylla and E. grandis×E.urophylla both had significant correlation with leaf length,leaf width,leaf perimeter,leaf length × leaf width,the ratio of leaf length to leaf width,shape factor,etc.,so the factors could be constructed into a regression model with leaf area. Among them,the best 2 models for leaf area calculation which were built by leaf length × leaf width of E. urophylla and E. grandis×E.urophylla both had relatively high accuracy and practical applications. Conclusion] The research provides a simple and effective leaf area measurement method for studies on the 2 tree species.