Effects of defoliation modalities on plant growth, leaf traits, and carbohydrate allocation in Amorpha fruticosa L. and Robinia pseudoacacia L. seedlings

摘要: Defoliation modality significantly affected leaf traits and carbon allocation especially in the early recovery period of two Leguminosae woody species . Robinia pseudoacacia L. recovered more quickly following defoliation than Amorpha fruticosa L. resulting from anthropogenic disturbance, insects, grazing animals affects plant growth vegetation dynamics. pseudoacacia fruticosa with different susceptibility to biotic attack are commonly used for restoration North China. However, responses were not fully understood species. We selected R. A. determine effects on individual growth, traits, carbohydrate compared species terms strategies restoration. In a greenhouse experiment, seedlings subjected three treatments: top down (TD) or bottom up (BU) 50% crown, control without (CK). The physiological determined at 1, 3, 14, 30, 60 days defoliation. Plant both after 2 months whatever modalities. Carbon was greatly by modalities during but had been treatment. end still obvious impacts characteristics, chlorophyll concentration specific area. exhibited evident compensatory mechanisms than treatments affect most allocation, Considering faster ability defoliation, may be suitable