| Following the developing of economics and sociality, the conflict between need and supply of timber had been becoming obviously more and more. One of the most important strateges to alleviate the conflict was to afforest large number of plantations. Eucalyptus grandis had been regarded as one of the most important species for short rotation industrial plantations in recently because of its fast growth, abundant yield and high quality. However, the growth of Eucalyptus grandis varied greatly in different property sites of Sichuan. In order to explore growth law and compilation managing tables of Eucalyptus grandis in Sichuan Province, the survey was carried out in different sites of some Distict (or Countries) such as Luzhou, Yibing, Meishan, Leshan, Fushun, Rongxian, Shawan, Muchuan, Danling, Hongya etc. The ages of plantations were from one year to 10-year, and the densities were in the range of 900 N-hm-2 and 2500 N-hm-2. The permanent or temporary sample plots Wich the area of 0.4 hm2 were set in these plantations. Some parameters related to tree growth such as diameter at breast height (DBH), height and stock were described and discussed in detail. The results indicate:(1) By imitating functions, some models such as site index, site class, local volume and general volume of short rotation industrial plantations were established; and then, the tables of site index, site class, local volume and general volume were compiled. The results were checked by the studies of the residuals from the functions, which showed the precisions were significant rather than 0.01 or 0.05 level.(2) Based on the natural developing system, the stand growth table (Yield table) was compiled according to the site classes of the supper, the secondary and the inferior. The regression of growth indexes and the age of the plantations was imitated and the growth waspredicated by the function: Y = a(1 - e -bt)c. According to the volume growth predicatiedfor three sites, the quantitative maturity of defferent plantations was approximately 6-year on the supper sites, 7-year on the secondary sites and 8-year on the inferior sites. It was obviously that the quantitative maturity could be earlier and the production cycle could be shorter if the intensive management could be put into practice.(3) The DBH distribution of these plantations was imitated with the functions of Weibull, reverse Weibull and Logistic, and the results showed that Logistic function accorded well with the DBH distribution of Eucalyptus grandis. And then, the yield models of DBH distribution (abbreviated as YMDD) in three sites were established with Parameter Recovery Model whose precision was higher, which ensured the yield model accorded well with the stand regression model and enhanced the precision of YMDD. The characteristics of YMDD was acted very well as the stand structure model by the unison of YMDD and the out-put model. YMDD had the virtues of stand structure table, variable density yield table and outturn table because the inputs of YMDD were total data of stand (age, site class and density) while the outputs were stand total yield (volume and mill run outturn) as well as the yield of every DBH class. Therefore, YMDD could give more information for the managers to make decisions.
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