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以萌生杉木(Cunninghamia lanceolata)林为研究对象,利用结构参数角尺度、大小比数、混交度对改造经营后的萌生杉木林的空间结构进行分析,结果表明:经营前后林木的分布格局均为随机分布;杉木林木分布格局由团状分布转变为随机分布,木荷仍为随机分布,其它树种仍为均匀分布;经营前、后林分的平均混交度分别为0.438 4、0.514 2,经营后较经营前有明显的提高,林分处于中度混交;经营后杉木的大小比数下降,木荷(Schima superba)、枫香(Liquidambar formosana)、赤杨叶(Alniphyllum fortunei)的大小比数增加;在经营后,树种的隔离程度、单木的优势度等得到了改善,有利于大径级材的培育。
Taking the Cunninghamia lanceolata forest as the research object, the spatial structure of the Cunninghamia lanceolata forest was analyzed by using the structural parameters of the angle scale, the size ratio and the degree of mixed degree. The results showed that the distribution pattern of the forest was random Distribution; Cunninghamia lanceolata forest distribution pattern changed from the clumpy distribution to a random distribution, Schima superba is still random distribution, other species are still evenly distributed; before and after the operation of the average degree of mixing were 0.438 4,0.514 2, after operating more There was a marked increase in the area before the operation, with moderate mixed stands. After the operation, the size of Chinese fir decreased, the size ratio of Schima superba, Liquidambar formosana and Alniphyllum fortunei increased; After operating, the degree of isolation of trees, dominance of single wood has been improved, is conducive to the cultivation of large-diameter timber.