Effect of interplanting Magnolia officinalis in Cunninghamia lanceolata plantations on understory species diversity of shrub layer
This study examines 35-year-old pure Cunninghamia lanceolata plantations and C.lanceolata plantations interplanted with Mag-nolia officinalis,surveys to analyze understory vegetation community characteristics and assess differences in plant diversity between pure plantations and interplanting systems.The findings indicated that the shrub layer in the interplanting system consists of 34 species,24 gen-era,and 17 families,compared to only 7 species,6 genera,and 5 families in the pure plantation system.Species richness and biodiversity indices in the shrub layer of the interplanting system were significantly higher than those in the pure plantation system.Furthermore,plant diversity indices in the interplanting system showed a strong positive correlation with the diameter at breast height of C.lanceolata,sug-gesting a positive impact on its growth.This study highlights that strategic interplanting in pure C.lanceolata plantations can effectively en-hance biodiversity.
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