不同光照水平下叶损失对樟(Cinnamomum camphora)生物量分配的影响

对不同光照条件及叶组织受损程度对植物生物量分配的影响进行了研究．结果表明：光照条件不同和叶损失程度不同都会导致植物物质分配方式的变化．高光照水平下，植株加大对根的生物量分配，低光照水平下增加对叶的生物量分配，中度光照条件下植株对根和叶的分配则处于两者之间；叶组织损失使植株加大对叶的生物量投资，不同处理阶段结果有所不同；低光照条件下，叶损失植株对叶的生物量分配显著高于高光照下的叶损失植株．

The Effect of Defoliation on the Biomass Partitioning of Cinnamomum Camphora Under Different Light Levels

In this paper, the effects of light intensity and leaf loss on biomass partitioning of plants were investigated. The result indicated that defoliation and different light intensities could change the pattern of biomass partitioning of plants. Plants partitioned more biomass to the underground parts at high irradiance and more biomass to leaves at low irradiance. Biomass partitioned to roots and leaves of plants at intermediate irradiance went between those of plants at high and low irradiance. Defoliation of plants led to an increased partitioning of biomass to leaves, but the results were different at different time. Moreover, defoliated plants partitioned more biomass to leaves at low irradiance than defoliated plants at high irradiance.