不同密度湿地松纸浆原料试验林早期冠幅生长模型研究

应用回归分析方法，对鄂中丘陵岗地下不同密度湿地松纸浆原料试验林前４年冠幅生长与树龄的关系进行了研究。结果表明，高密度湿地松幼林冠幅生长遵循逻辑斯蒂生长模型，中等密度湿地松幼林冠幅生长遵循严格苏玛克生长模型，低密度湿地松幼林冠幅生长则遵循指数生长模型，并对各密度冠幅生长模型进行了比较分析。

STUDY ON EARLY CROWN DIAMETER GROWTH MODEL OF SLASH PINE PULPWOOD EXPERIMENTAL STANDS WITH DIFFERENT DENSITIES

Using regression analysis method, the early crown diameter growth models of slash pine ( Pinus elliottii Engelm.) are tested at pulpwood experimental stands with different densities on hilly lands of central Hubei Province. The results show that the crown diameter growth of high density slash pine stand followes loistic growth model, while that of medium density slash pine stand followes strict sumake growth model, and low density slash pine stand followes exponential growth model, respectively. The optimum models for all kinds of densities of slash pine stands are contrasted and analyzed at the same time.