四种生态景观树种在马尾松疏林地中套种的生长效果分析

Analysis on the Growth Effect of 4 Ecological Landscape Tree Species Interplanting in Pinus Massoniana Open Forest Land

通过对马尾松疏林地套种红叶石楠、罗汉松、紫薇、竹柏等4种生态景观树种的生长情况进行分析,红叶石楠的当年造林成活率、保存率分别为100%、96.9%,为4种生态景观树最好,说明其在马尾松疏林地套种的适宜性最强;同时对各生态景观树种的冠幅、冠长、冠长率、树冠圆满度、冠型指数等指标进行分析,红叶石楠的冠幅、冠长、冠长率、树冠圆满度、冠型指数分别为1.55 m、2.93 m、0.93、0.82、0.53,与罗汉松、紫薇、竹柏相比,具有显著的差异,冠幅、冠长、冠长率、冠型指数等指标的差异达到极显著水平。

In this paper,the growth of four ecological landscape tree species,including Photiniax fraseri,Podocarpus macrophyllus(Thunb.)D.Don,Lagerstroemia indica L.and Podocarpus nagi(Thunb.)Zoll.et Mor ex Zoll.,were analyzed.The survival rate and preservation rate of Photiniax fraseri were 100% and 96.9%,respectively,which were the best of the four ecological landscape trees,indicating that Photiniax fraseri has the strongest suitability for interplanting in the Pinus massoniana woodland.At the same time,the crown width,crown length,crown length ratio,crown completeness and crown type index of each ecological landscape tree species were analyzed.The crown width,crown length,crown length ratio,crown completeness and crown type index of Photiniax fraseri were 1.55m,2.93m,0.93,0.82 and 0.53,respectively,which were significantly different from Podocarpus macrophyllus(Thunb.)D.Don,Lagerstroemia indica L.and Podocarpus nagi(Thunb.)Zoll.et Mor ex Zoll..The differences of crown width,crown length,crown length ratio and crown type index reached a very significant level.