先通过对地位指数导向预选模型进行拟合，确定地位指数导向曲线，再将树种基

First by fitting on the status of pre-selected index-oriented model to determine the status of the index guide curve, then the tree base year into the guide curve to obtain the advantages of high-value trees on the guide curve to the value of the subject, according to the position from the exponential expansion , obtained the status index curve at all levels.

First by fitting the status index-oriented pre-selection model, determining the status index-oriented curve, and then bringing the tree species base year into the guiding curve, the advantage tree high value on the guide curve is obtained, which is the basis, according to the status index level, the status index curve at all levels is obtained.

First, through fitting the site index pre selection model, determine the site index guidance curve, and then bring the base year of tree species into the guidance curve to obtain the height value of dominant trees on the guidance curve. Based on this value, expand according to the site index interval, and obtain the site index curve at all levels.<br>