以水杉地位指数级18 m的导向曲线为基准，按照指数级距C=2 m，通过

Metasequoia position to direct exponential curve 18 m as a reference, according to exponentially from C = 2 m, the adjustment value is calculated is calculated on the fir tree height position of each exponential curve through the old-order exponential.

Based on the guiding curve of 18 m of the sequoia status index level, the tree height value on the local level index curve of the water fir is calculated by the adjustment of the various age indices according to the exponential distance of C to 2 m.

Based on the 18 m guiding curve of Metasequoia position index, the height of trees on each position index curve of Metasequoia was calculated by adjusting the index of each age class according to the index class distance C = 2 m.<br>