利用标准差调整法，分别导出水杉和杨树12-24 m共7条地位指数曲线，

Using the standard deviation Adjustment Act, fir and poplar were exported a total of 12-24 m 7 Index Curve, fir and poplar plantations in subtropical regions north of the preparation level position index table, by placement test method for the preparation of the index level status table test,

Using the standard deviation adjustment method, the seven status index curves of spruce and poplar 12-24 m were derived, and the status-level index table of spruce and poplar artificial forest spruce in the north subtropical region was compiled, and the status-level index table compiled was tested by the drop-point test method.

Seven site index curves of Metasequoia glyptostroboides and poplars, 12-24m in total, were derived by using the standard deviation adjustment method. The site index tables of Metasequoia glyptostroboides and poplars plantations in the north subtropical region were compiled. The site index tables were tested by the drop point test method,<br>