滨海沙地湿地松与木麻黄混交林构建和调控技术研究

自 1992年以来,在福建省东山县赤山林场滨海沙地,在湿地松、木麻黄混交林营造的基础上,采用行状疏伐法对其种间关系和树种结构比例进行调控试验。混交林经调控 1a后,通过 2个树种树高、胸径、单株材积等年生长率的变化分析,提出调控后形成新的混交方式应为:木麻黄行数应控制在 2-3行之内,而湿地松行数应增至 3行以上带状混交配置模式,以形成树种间交界行宽行距和树种内窄株距的宽行窄株混交配置模式,对种间关系和林木生长比较有利。

Studies on the Establishment and Control Techniques of Mixed Forest of Casuarina equisetifolia and Pinus elliottii in Coast Zone

Since 1992, on the basis of the mixed forest of Casuarina equisetifolia with Pinus elliottii , which was afforested in coastal sandy site in Chishan Forest Farm of Dongshan County, Fujian Province, the inter specific relation and structural proportion of species were regulated by thinning in row. By analyzing the change of two species in height, diameter, and single plant volume after one year of the regulation. It is showed that the new model is 2 3 rows of Casuarina equisetifolia mixed with over 3 rows of Pinus elliottii , thus formes such disposition: wide row space of inter species, and close plant space in the same specie, which is benefit to the inter specific relation and the tree growth. Therefore, it is suitable to use this method to regulate the inter specific relation in multi species mixed forest.