【摘要】 1963年在小兴安岭丰林自然保护区红松林及有关的皆伐迹地上设置了61组,325个实验样方,定期观察到1965年,以研究死、活地被物对人工播种的红松林伴生树种种子发芽和幼苗初期存活、生长的影响。实验表明死、活地被物,特别是死地被物的干湿变化剧烈,影响幼苗的成活,甚至使种子或幼根无法接触土壤,因而种粒越小,或轻而带翅,受影响越大。此外本文还指出了桦树种子的强迫休眠和延迟发芽现象。讨论了实验结果在红松林演替和人工促进天然更新中的意义。更多还原

【Abstract】 As an integrated part of the research on "The Structure and Dynamics of Korean Pine Forest", 325 plots were set, treated, sown and periodically observed from 1963 to 1965 in Korean pine forests in the Lesser Khingan Mountains (Xiaoxinganling) to study the effect of removing litter layer or living ground cover on seed germination and seedling survival of aspen, birch, spruce, larch and linden. Significantly negative effect of litter layer was found on seed germination and seedling survival in all species except linden. Some birch seeds were inhibited from germinating but remained alive for 2—3 years. The adaptability of seeds to germinate and survive on litter layer was found to be positively correlated to the seed size. The relation between adaptability of seeds to germinate and survive on litter layer and shade tolerance of seedlings is also discussed.更多还原