对不同密度的杉木毛竹混交林及其人工纯林进行调查 ,依据生态学原理 ,分析了各混交林及纯林的林分生长状况、单株和林分生物量变化以及林分的空间分布格局演变 .结果表明 :杉木密度为 1 80 0株· hm-2的混交林中 ,营养空间利用充分 ,叶量占总生物量的比例达 1 7.70 %;生物量最大为 78.43t· hm-2 ,生长最好 ,表现出较高的林分生产力和林分生长量 ,混交效果最好 . Based on the ecological principles, the stand growth of individual mixed forest and pure stand, the change of biomass per plant and stand, and the spatial distribution pattern of stands were investigated. The results showed that the nutrient space was fully utilized in the mixed forest of 18 80 Chinese fir plant density per hm-2, the ratio of leaf biomass to total biomass reached 1 7.70%, and the maximum biomass was 78.43 t · hm-2. The best growth, showing higher stand productivity and stand growth, the best mix.