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叶面积是树木生长模型和树木的生理过程的一个重要参数。根据叶重量估计叶面积。本文以我国南方主要树种桉树为对象,实测了从25株桉树上摘取的455片桉树叶子的重量和面积,分别建立了基于叶鲜重的嫩叶与成熟叶单叶面积预测模型。其中80%的数据用于建模,20%的数据用于模型验证。基于模型拟合效果、误差和残差分布,确定了成熟叶和嫩叶的叶面积模型分别为幂函数和线性方程。经检验,模型精度均达95%以上。建立的模型为估计单叶面积提供了一个简单可靠的方法,并且在桉树的结构-功能模型研究中有应用潜力。图4表5参15。
Leaf area is an important parameter of the tree growth model and the physiological processes of trees. Leaf area is estimated from leaf weight. In this paper, the weight and area of 455 eucalyptus leaves extracted from 25 eucalyptus trees were measured for the main tree species Eucalyptus in southern China. Leaf leaf area prediction models for young and mature leaves based on leaf fresh weight were established. 80% of the data is used for modeling and 20% for model verification. Based on the model fitting effect, error and residual distribution, the leaf area models of mature leaf and young leaf were determined as power function and linear equation respectively. After testing, the model accuracy reached more than 95%. The established model provides a simple and reliable method for estimating single leaf area and has potential applications in the study of structure-function models of eucalyptus. Figure 4 Table 5 参 15.