The Establishment of Multi-formed Site Index and Growth Processing Tables for Plantation of Pinus massoniana in Zhejiang Province

According to the data of 290 oriented plots and 580 analysis trees(both average and dominated ones)from plantation of Pinus massoniana in 21 counties of Zhejiang Province,and the revised Richards function is selected as a mathematical model.The domination and average height and DBH of the growing process have been simulated by the imitated equations which calculated through Marquardt repeat replacement method The Multiformed site index and Growth Processing Tables have been established.A series of form coefficients are introduced into the equations(such as B1,B2 etc.).So they have fine simulating effect to the different formed growth curves of the species in different region of the province.The statistical tests shows:the complex relative coefficients are all higher than 0.99 and the remainder S. D. are 0.1～0.3 in the the province or its three productive regions(Ⅰ2、Ⅱ and Ⅲ mdegree regions,each contained 90～100 plots);In addition the relationship between the density per unit area of standard stand(density of the crop is 1.0)and DBH is simulated according to the theory of Reineke(1933)on full density of stocking and the function of N=Csub>0+Csub>1/(Csub>2+D)has been used.At last,the growing process table of the species in Zhejiang is established.