是发生在生物生命活动过程中的一种机械风化作用。生长在岩石裂隙中的植物，随着根系不断地长大，对裂隙壁产生挤压，使岩石裂隙扩大，从而引起岩石破坏。Root wedging process is a mechanical weathering process caused by the growth of plant. The root of the plant which grows in rock fissures keeps pushing the fissure faces and enlarging the cracks as it grows, breaking the rock into pieces.