CAJ | 학술논문

利用林分空间结构参数--混交度、大小比数和角尺度,分析长白山金沟岭林场云冷杉针阔混交林从1989-2005年的空间结构信息演变过程.研究结果表明:该林分已由随机分布过渡到轻度聚集分布;林分内各树木之间的直径差距逐渐缩小;该林分已经从中度混交过渡到强度混交.随着森林演替的进程,林分中杨树、白桦和蒙古栎等先锋树种逐渐退出所在群落,而当地云杉、冷杉和红松等顶级群落树种则演变为优势树种.文中利用空间格局方法研究森林演替过程中的结构变化,从而反映云冷杉针阔混交林的演替过程动态变化格局.
이용림분공간결구삼수--혼교도、대소비수화각척도,분석장백산금구령림장운랭삼침활혼교림종1989-2005년적공간결구신식연변과정.연구결과표명:해림분이유수궤분포과도도경도취집분포;림분내각수목지간적직경차거축점축소;해림분이경종중도혼교과도도강도혼교.수착삼림연체적진정,림분중양수、백화화몽고력등선봉수충축점퇴출소재군락,이당지운삼、랭삼화홍송등정급군락수충칙연변위우세수충.문중이용공간격국방법연구삼림연체과정중적결구변화,종이반영운랭삼침활혼교림적연체과정동태변화격국.
Three spatial structure parameters, mingling degree, neighborhood comparison, and uniform angle index, were used to analyze the succession of spatial structure in a spruce fir secondary mixed forest in Changbai Mountain from 1989 to 2005. Results showed that the spatial pattern of the stand changed from a random distribution in 1989 to a slightly clumpy distribution in 2005, and the differences in diameter size between various individuals in the stand were gradually narrowing. The mingling degree of the spruce fir mixed stand had already changed from moderate to strong. With the progress of the succession stages, pioneer tree species such as Betula platyphylla Suk., Populus davidiana Dode. and Quercus mongolica Fisch. ex Ledeb. gradually disappeared in the community, but the climax species such as Pinus koraiensis Sieb.et Zucc., Abies spp. Mill. and Picea asperata Mast. became the dominant tree species. The application of spatial structure parameters to the study of structural changes in the process of secondary forest succession could reflect the dynamics of forest succession.