Relationship between seed dispersion feature and dispersal agents of coexistence tree species in conifer plantations

研究了针叶林共存树种种子传播特性与立地因子的关系。从低海拔区向高海拔区分布的频率较高。在海拔高、离天然林近的林分中，风速型树种的发生率较高。结果表明，食果鸟类和田鼠是共生树种种子传播的主要媒介。

The relationship between site factors and seed dispersion feature of coexistence tree species in conifer plantations was examined. Tree species of endozoochory appeared from the low elevation region to the high elevation region in a high frequency. The occurrence of anemochory type species was higher in stands with high elevation and near from natural forests. It was concluded that frugivorous bird species and Field Mouse were the major agents of seed dispersion for coexistence tree species in confer plantations in Japan.