首页|昆嵛山天然赤松次生林空间结构特征的研究

昆嵛山天然赤松次生林空间结构特征的研究

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为研究天然赤松次生林的空间结构特征,在昆嵛山国家级自然保护区内设立了一块6hm2的永久性监测样地,并对林内树种组成及其分布进行调查分析.用角尺度、混交度和大小比数3个参数,对天然赤松次生林空间结构特征进行分析研究.结果表明:赤松是绝对的优势种,麻栎为次优势种,与其他16种乔木共同构成了赤松麻栎林生态群落；赤松次生林的平均混交度为0.44,主要以弱度混交与中度混为主,林分的平均大小比为0.50,且各部分频率分布比较均匀,说明乔木层的树种稳定性较好；全林角尺度平均值为0.54,林木水平格局为团状分布；虽然阔叶树种在混交度上稍好于针叶树种,但是其在胸径大小上明显小于针叶树种,说明其受针叶树种压迫较为严重.该研究可为该地区的展开森林有害生物调控机理研究和天然赤松次生林的合理经营提供参考依据.
Study on spatial structure of natural Pinus densiflora secondary forest in Kunyu mountain
In order to study the spatial structure of natural Pinus densiflora secondary forest,a sample plot with the area of 6 hm2 in national nature reserve of Kunyu Mountain was permanently set up,and then the tree species composition and distribution of the natural forest were investigated and analyzed.Further,by using three parameters including mingling degree,neighborhood comparison and uniform angle index,the spatial structure of the forest was studied.The results show that the ecological community was made up of Pinus densiflora,saw tooth oak and the other 16 tree species,in which the most abundant species was Pinus densiflora,followed by the saw tooth oak; Mainly based on weak and moderate mingling degree,the average mingling in the stand was 0.44; The average neighborhood comparison was 0.50,and the distribution frequency of each part were relatively even,which showed that the tree species of the tree layer were relatively stable; The average uniform angle index was 0.54,and showed a reunion distribution in the horizontal pattern; The mingling degree of the broadleaved tree species was a little better than that of the coniferous species,while the breast diameter of the broadleaved tree species was much shorter than that of the coniferous species,which illustrated the broadleaved tree species were seriously oppressed by the coniferous species.The researches should provide references for the study of forest pest regulation mechanism and rational management of natural Pinus densiflora secondary forest in this area.

natural Pinus densiflora secondary forestspatial structurenature reserve of Kunyu Mountainmingling degreeneighborhood comparisonuniform angle index

马琳、梁军、周国英、朱彦鹏、杨蕾、张星耀

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中南林业科技大学经济林培育与保护教育部重点实验室,湖南长沙410004

中国林科院森林生态环境与保护研究所国家林业局森林保护重点试验室,北京100091

天然赤松次生林 空间结构 昆嵛山自然保护区 混交度 大小比数 角尺度

国家林业生态站监测运行项目国家自然科学基金国家林业公益性行业科研专项

31270682201204501

2013

中南林业科技大学学报
中南林业科技大学

中南林业科技大学学报

CSTPCDCSCD北大核心
影响因子：1.442
ISSN：1673-923X
年,卷(期)：2013.33(9)
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