常用的地位级指数表编制方法包括标准差调整法，变动系数调整法以及相对优势

Common position level index table preparation method includes adjusting the standard deviation method, the coefficient of variation Adjustment Act and the Supreme Court comparative advantage. In status exponential curve based on the guide, from a high value in a tree at the reference level and the age index, using the standard deviation or coefficient of variation method adjustment method, thereby forming the position of curves height growth, compared to other methods, standard deviation adjustment method simple and convenient, this study also fir and poplar adjustment method using the standard deviation of index table preparation

Commonly used methods of index ingressing status index include standard deviation adjustment, change coefficient adjustment and high comparative advantage. Based on the status index-oriented curve, according to the tree height value and exponential distance at the base age, the standard deviation method or change coefficient adjustment method is used to form the tree high growth status curve cluster, the standard deviation adjustment method is more simple and convenient compared with other methods, so the status index table of water fir and poplar is also used in this study.

The commonly used methods of preparing position index table include standard deviation adjustment method, variable coefficient adjustment method and high relative advantage method. Based on the position index guide curve, according to the height value and index class distance of the reference age, standard deviation method or variable coefficient adjustment method is used to form the height growth position curve cluster. Compared with other methods, the standard deviation adjustment method is more simple and convenient. Therefore, the standard deviation adjustment method is also used in this study to prepare the position index table of Metasequoia and poplar<br>