The Community Structure and Species Diversity of Low-benefit Ecological Service Forests in Guangdong

The community structure and species diversity of low-benefit ecological service forests,including pure and mixed forests of Pinus massoniana and Cunninghamia lanceolata in Guangdong,respectively,were studied by the plot survey method.The results showed that 149 species belonging to 58 families and 92 genera were recorded in the 18 plots,with obvious tropical and subtropical floristic features;The vertical structure of four forest communities were relatively simple and were still in the early stages of vegetation succession.The Patrick index varied from 32 to 66,whilst Shannon-Wiener index varied from 0.61 to 3.15,values of between 0.26 and 0.89 were observed Simpson index,while the Pielou index were between 0.15 and 0.89.Furthermore,the major factors influencing the ecological service forest and different measures to improve species diversity of ecological service forest were also discussed.