Abstract:

In order to provide guidance and basis for protecting coastal forests, sampling survey was conducted to study and analyze the coastal forests of Pinus elliotii E. in southeast of China. And 6 widely used theoretical growth equations, which were Logistics, Gompertz, Weibull, S curve, Second curve and Richards, were used to establish the correlation between breast and height in DPS. The results indicated that compared with other equations, the relation value R of Logistics equation was maximum (0.9618) and surplus square sum was minimum (96.599). Therefore, Logistics equation fits the correlation of Pinus elliotii E. between breast and height better than others, which was more fitted to establish tree breast-height diameter growth model of Pinus elliotii E.. And Weibull equation was little less than Logistics one. The Logistics model was suitable for the forest of Pinus elliotii E. in southeast of China, and might be applied to other protection forests.