Based on longterm observation data in Dinghushan station,the energy model of monsoon evergreen broadleaf forest,the coniferous and broadleaf mixed forest and masson pine forest were synthetically analysed.The direction and rate of energy exchang and the energy utilization were obtained in each community.The results show that the monsoon evergreen broad leaf forest had the highest value of the energy exchange intensity,the observed yearly photosynthetically active radiation(PAR)was 1685 MJ/m2,account for...