动物搬运与地表覆盖物对辽东栎种子命运的影响

摘要

There are few seedlings from seeds of Quercus liatungensis in mature Q.liaotungensis forests in Dongling mountain region.The natural population regeneration of Q.liaotungensis depends on basal sprouting,although a large number of seeds drop every year.To determine the main factors influencing the fate of seeds and the seed bank dynamics,we investigated the fate of the seeds under some experimental conditions.The results show that removal and predation in situ by animals is the most important factor affecting the fate of seeds,and Q.liaotungensis could grow into seedlings from seeds without this factor.Most of the seeds scatterhoarded by rodents were consumed,and very few survived.Groundcover reduced the removal and predation in situ by animals,but was not effective enough to result in seedling emergence.%东灵山的辽东栎成熟林内尽管每年有大量种了散落，但实生苗极少，种群天然更新主要依赖于萌蘖。为确定影响种子命运和种子库动态的主要因素，调查统计了不同试验条件下的种子命运。结果发现：(1)动物搬运和取食是影响种子命运和种子库动态的主要因素，在没有该因素的影响下，辽东栎能够完成从种子到幼苗的过程；(3)被啮齿动物贮藏的种子大多被取食，极少存活；(3)地表覆盖物能减少动物搬运、取食的影响，但尚不足以导致新生幼苗出现。