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根据鼎湖山定位观测站多年的实验数据，综合分析鼎湖山自然保护区内季风常绿阔叶林、针阔混交林和马尾松林３种群落的能量流模式，取得森林生态系统各组分之间能量交换的流向和流量，并求出３个群落的几种能量利用效率。研究结果表明，从能量交换强度看，季风常绿阔叶林最大，群落每年吸收的ＰＡＲ达１６８５ＭＪ／ｍ２，占投射到林冠上ＰＡＲ的９３．７％，针阔混交林次之，吸收率为８７．９％，针叶林最少，吸收率只有４０．０％。ＰＡＲ的利用效率，季风常绿阔叶林最大为２．３３％，针阔混交林次之为１．８５％，针叶林最少，只有０．７９％。即，通过一系列的能量交换和转化过程之后，形成实际净光合产物的ＰＡＲ份额，季风常绿阔叶林＞针阔混交林＞针叶林。
According to the experimental data of Dinghushan Positioning Observatory over many years, the energy flow patterns of three communities in the monsoon evergreen broad-leaved forest, coniferous-broad mixed forest and Pinus massoniana forest in Dinghushan Nature Reserve were comprehensively analyzed. Flow and flow of energy exchange, and find out several energy utilization efficiencies of the three communities. The results showed that the monsoon evergreen broad-leaved forest was the largest in terms of energy exchange intensity, and the annual PAR absorbed by the community was 1685MJ / m2 accounting for 93.7% of the PAR projected onto the canopy, followed by the coniferous and broad-leaved mixed forest with the absorption rate of 87.9%, the least coniferous forest, the absorption rate is only 40.0%. The utilization efficiency of PAR was 2.33% in the monsoon evergreen broad-leaved forest, 1.85% in the mixed coniferous and broad-leaved forest followed by coniferous forest with the least, only 0.79%. That is, the fraction of PAR that forms the actual net photosynthate after a series of energy exchange and conversion processes, monsoon evergreen broad-leaved forest> mixed broad-leaved coniferous forest> coniferous forest.