植物群落物种共存机制: 负密度制约假说

祝燕, 米湘成, 马克平

A mechanism of plant species coexistence: the negative density-dependent hypothesis

Yan Zhu, Xiangcheng Mi, Keping Ma

图1 Janzen-Connell假说中种子扩散和距离制约种子、幼苗死亡的过程(Janzen, 1970)。PRC: 种群增补曲线; I：单位面积种子数量; P: 种子或幼苗幸免于捕食的概率。

Fig. 1 The processes of Janzen-Connell hypothesis on seed dispersal and distance dependence on seed or seedling mortality (Janzen, 1970). PRC, Population recruitment curve;I, The number of seeds per unit area; P, The probability that a dispersed seed or seedling will be missed by the host-specific seed and seedling predators.