摘要
通过对黑石顶森林群落中黄果厚壳桂幼苗生长的一年定位观测与影响幼苗生长的因子进行相关性分析。研究结果表明,土壤营养元素氮、磷、钾含量与幼苗生长呈正相关。土壤有机质含量和pH值也间接影响幼苗生长。在水分和光照强度变化较大的群落中,幼苗生长与土壤水分含量呈正相关,与林内光照强度呈负相关。群落中幼苗密度较大将促进1年生幼苗的生长。各影响因子主要与1—3年生幼苗的生长具有显著的相关性,而3龄以上的幼苗生长与各因子间无显著的相关性。
Studies of C. concinna seedling growth were carried out in Heishiding subtropical forest. C. concinna seedlings in permanent transects were tagged and measured at bimonthly intervals during one year period. The factors effecting seedling growth including edaphic factor, light intensity and seedling density in plots were measured and the relativity between seedling growth height and effective factors were analysed. The results shows that seedlings growth is positively related to nutrient elements N、P、K in soil. Litter decomposition ratio and pH of the soil effect seedling growth indirectly. In the community that soil water and light intensity distribute unevenly, seedling growth is positively relate to soil water and negatively to light intensity. Higher seedling density is favorable to the growth of one years old seedling. The growth of one to three years old seedling is significantly relate to effective factors, but seedling growth above three years old is unsignificantly relate to effective factors.
出处
《中山大学研究生学刊（自然科学与医学版）》
1996年第2期1-6,共6页
Journal of the Graduates Sun YAT-SEN University(Natural Sciences.Medicine)
关键词
黑石顶
黄果厚壳桂
幼苗生长
影响因子
相关分析
heishiding, Cryptocarya concinna, seedling growth, effcetive factors, correlation analysis
