摘要
广东松（Ｐｉｎｕｓｋｗａｎｇｔｕｎｇｅｎｓｉｓ）是国家三类重点保护植物，为贵州茂兰国家自然保护区喀斯特山顶森林群落演替先锋树种和建群种之一。基于大小结构分析法、矩阵模型和分布格局距离方法，对茂兰喀斯特山地广东松种群结构和动态进行了初步研究。结果表明：（１）广东松种群大小结构近倒金字塔形，为中衰至衰退型种群；（２）广东松年龄（Ｅ）和胸径（Ｄ）的回归方程为Ｅ＝５９．９６８／（４．０４１—１ｎＤ）；（３）广东松种群分布格局为斑块内种群个体集聚分布，斑块个体均匀分布；（４）广东松各径级度的种群密度（ＤＳ）随径级度（ＤＧ）呈Ｓ形变化，ＤＳ＝１／（０．０５８４＋０．０１８ｅ－ＤＧ）；（５）广东松种群为先锋种群，也能在山顶特殊生境中一定时期内与其它种群一起形成稳定群落：（６）分布格局距离方法能有效地用于亚热带森林树种的种群分布格局研究，矩阵模型能在一定程度上反映森林树种种群的数量和结构动态。
Based on the matrix model and spatial pattern distance method, the structural and dynamical characteristics of the Pinus Kwangtungensis population,one of pioneer and constructive species in the forest succession series in Karst mountain of Maolan were studied. The results showed that:(1) The population was a senescent population. (2) The relation between the age (E) and the diameter at breast height (D) of the population waa E=59.968/(4.041-1nD).(3)The spatial pattern of the population was characterized by a iniform distribution of patches in which individuals were clumped. (4) Population donsities (DS) in each diameter class tended to change with diameter at breast height (DG), the relation was DS=1/(0.058+0.018e-DG).(5) The population is a pioneer population. At certain special habitats, the species, together with other species could form a relatively stable community.(6) To a certain extent, the distance method and matrix model can be effectively used in the analysis of the spatial pattefrn for subtropical forest species
出处
《植物生态学报》
CAS
CSCD
北大核心
1996年第2期159-166,共8页
Chinese Journal of Plant Ecology
关键词
广东松
种群结构
种群动态
Pinus kwangtungensis
Population
Distance method
Guizhou
