<正>在毛竹产区设立固定标准地,分别测定现实林分的林分结构因子、主导生境因子和新竹产量等项指标。根据既定的项目和类目,采用数量化理论Ⅰ,分别编制出毛竹林新竹数和新竹生物量得分表。检验表明,该得分表具有较高的精度。它们不但可用来预测新竹的产量,而且还可用来指导选择适宜的造林地和调整林分结构等速生丰产技术措施的确定。

After establishing the unmoveable sample plots in the growing zones of China, the terms such as stand structure factors, leading site factors and yield of 1-yr-old bamboos have been measured. According to the decided terms and categories as well as by using the quantitative theory I, the objective mark table of the number of 1-yr-old bamboos and the objective mark table of biomass of 1-yr-old bamboos have been worked out. Testing results show that two tables have very high precision. They can be used not only for predicting the yield of 1-yr-old bamboos but also for guarding the selection of suitable field for afforestation and adjusting current stand structure in order to gain a high yield.