岛东林场多功能森林作业法研究及应用

Research and Application of Multifunctional Forest Operation Method in Daodong Forest Farm

本研究在文昌市岛东林场选择以木麻黄为优势树种的3块混交林(45小班、47小班和62小班)进行补植,营造4种不同近自然度的森林,并以木麻黄纯林为对照,比较林分生长情况。结果表明:与木麻黄纯林相比,3块混交林的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,其树高及胸径分布具有较大的差异性;由于45小班林冠密度较小,林内光线充足,补植的苗木生长能力最强。

In this study,three mixed forests(Subcompartment 45,47,62)with Casuarina equisetifolia as the dominant tree species in Daodong Forest Farm,Wenchang City were selected for replanting,creating four forests with different degrees of naturalness.The pure forest of Casuarina equisetifolia was used as the control to compare the growth of the stands.The results showed that compared with the pure forest of Casuarina equisetifolia,there were a variety of herbaceous vegetation growing naturally under the forest of three mixed forests,and the biodiversity was richer than that of the pure forest.Among the three mixed forest sample plots,Acacia auriculiformis had a strong growth advantage,and its tree height,DBH and growth were higher than those of Casuarina equisetifolia and other mixed species.Casuarina equisetifolia had great individual differences in the growth process,and its tree height and DBH distribution had great differences.Because the canopy density of Subcompartment 45 was relatively small and the light in the forest was sufficient,the growth ability of replanted seedlings was the strongest.