pippard equation

The growth model of mean DBH,mean height,volume per area and number of trees of Cunninghamia lanceolata was established by using Richard Equation,then the experience harvest table of Cunninghamia lanceolata plantation was developed with relevant formulas.

采用理查德方程建立杉木人工林平均胸径、平均树高、单位面积蓄积量和株数的生长模型,结合有关公式编制了杉木人工林经验收获表,该表经检验证明适用,可用于林分生长收获预估和小班资源数据更新。