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根据海岸带复合农林业不同立地类型（旱作田和水旱轮作田）水杉林带生物量的测定资料，建立了水杉林带树干、树枝、树叶、地上部分、地下部分及全株生物量模型。经择优分析，确认数学模型ｌｎｙ＝ａ＋ｂ·ｌｎｘ为水杉林带各器官生物量的最优估测模型；以树冠体积（ｃ２ｈ）估测枝、叶量的效果好于以树干体积（Ｄ２Ｈ）的估测效果；其余器官生物量的估测则以Ｄ２Ｈ为佳
Based on the data of biomass of Metasequoia glyptostroboides in different site types of agro-forestry in the coastal zone (dryland and crop rotation), biomass model of trunk, branches, leaves, aboveground part, underground part and whole plant was established . The optimal model for estimating the biomass of each organ of Metasequoia glyptostroboides was validated by the optimal analysis. The results showed that the estimation of branch and leaf volume by canopy volume (c2h) was better than that of stem volume (D2H) Estimated results; the rest of the organ biomass is estimated to D2H better