he biomass,primary productivity and photosynthetically active radiation energy effi-ciency of the mixed coniferous and broadleaf forest community in Mt. Dinghushan,situatedin the low subtropics, were studied by using the methods of tree harvest,litter gathering andCO_2 analysis. The results show that the community had a leaf area index of 11,biomass of26.1t· hm￣(-2)·a￣(-1),total productivity of 117 t·hm￣(-2)·a￣(-1),primary productivity of 19.9t·hm￣(-2)·a￣(-1),and energy use efficiency of 12%. It was found t...