摘要
以湖南省浏阳市浏阳湖国有林场杉木纯林为研究对象,通过杉木林间伐后套种闽楠形成异龄复层混交林和同步营造闽楠纯林试验,分析研究不同方式营造的闽楠生长状况。结果表明:在保留密度为525株·hm^(-2)的杉木纯林内补植闽楠450株·hm^(-2),生长6 a后套种闽楠平均树高达6.3 m,平均胸径达6.0 cm,树高和胸径生长量高于杉木林下补植750株·hm^(-2)闽楠的改培林14.7%和15.3%,高于同期营造的闽楠纯林46.5%和53.8%,说明在杉木林实施间伐后林中补植闽楠不但没有制约闽楠的生长,反而在生长量上要高于同条件下的闽楠纯林。杉木间伐后林中补植闽楠能够在一定程度上促进闽楠的生长,这为杉木纯林改培提供了重要参考。
Taking the pure forest of Cunninghamia lanceolata in Liuyang Lake State-owned Forest Farm in Liuyang City at Hunan Province as the research object,the growth status of Phoebe bournei planted in different ways was analyzed,and studied through the experiment of interplanting Phoebe bournei after thinning to form a mixed forest of different ages and multiple layers and synchronously planting pure forest of Phoebe bournei.The results showed that 450 plants·hm^(-2) were replanted in the pure Cunninghamia lanceolata forest with a retention density of 525 plants·hm^(-2).After six years of growth,the average tree height and DBH of the interplanting Phoebe bournei reached 6.3 m and 6.0 cm.The growth of tree height and DBH was 14.7%and 15.3%higher than that of the modified forest with 750 plants·hm^(-2),46.5%and 53.8%higher than that of the pure Chinese fir forest built in the same period,indicating that the replanting of Phoebe bournei in the forest after thinning did not restrict the growth of Phoebe bournei.On the contrary,the growth was higher than that of Phoebe bournei pure forest under the same conditions.Replanting Phoebe bournei after thinning can promote the growth of Phoebe bournei to a certain extent,which provides an important reference for the improvement of pure Cunninghamia lanceolata forest.
作者
潘升水
刘绍辉
魏志恒
程勇
张珉
吴际友
谢敏
潘百红
PAN Shengshui;LIU Shaohui;WEI Zhiheng;CHENG Yong;ZHANG Min;WU Jiyou;XIE Min;PAN Baihong(Liuyang Lake State-owned Forest Farm,Liuyang 410300,Hunan,China;Hunan Academy of Forestry,Changsha 410004,Hunan,China;Hunan Guanda Agriculture and Forestry Technology Co.,Ltd.,Changsha 410004,Hunan,China;Central South University of Forestry&Technology,Changsha 410004,Hunan,China)
出处
《湖南林业科技》
2022年第3期61-64,共4页
Hunan Forestry Science & Technology
基金
湖南省林业科技计划项目(XLK201610)
中南林业科技大学引进高层次人才科研启动基金(104-0137)。
关键词
杉木
林下改培
闽楠
生长
Cunninghamia lanceolata
improving cultivation in the undergrowth
Phoebe bournei
growth
