岛东林场多功能森林作业法研究及应用

本次研究以文昌市岛东林场的木麻黄纯林为对照组,以经营条件下的同龄林、相对同龄林、异龄林等三种林分,4种不同近自然度的森林为研究对象。较纯林对照组,3个样地为混交林经营,林下自然生长多种草本植被,生物多样性较纯林丰富;3块混交林样地中,大叶相思具有较强的生长优势,其树高、胸径及生长量均高于木麻黄和其他混交树种;木麻黄则在生长过程中存在较大的林木个体差异,其树高及径级分布具有较大的差异性;由于45小班A地块林冠密度较小,林内光线充足,其补植的苗木生长能力最强。

Research and application of multifunctional forest operation method in Daodong Forest Farm

In this study, the pure Casuarina equisetifolia forest in Daodong Forest Farm of Wenchang was taken as the control group, and the same age forest, relative same age forest, and different age forest under the management conditions, and 4 kinds of forests with different degrees of near nature were taken as the research objects.The three sample plots are managed by mixed forest. Compared with the pure forest control group, there are a variety of herbaceous vegetation growing naturally under the forest, and the biodiversity is richer than that of the pure forest.Among the three mixed forest sample plots, Acacia big-leaf has a strong growth advantage, and its tree height, DBH and growth are higher than those of Casuarina equisetifolia and other mixed species.Casuarina equisetifolia has great individual differences in the growth process, and its tree height and diameter class distribution have great differences.Because the canopy density of Plot A in Class 45 is small and the light in the forest is sufficient, the growth ability of replanted seedlings is the strongest.