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磨盘山林场位于句容县最南端,总面积24193亩。1984年4—6月,我院在县一、二类调查的基础上,对该场类型中心抽样固定样地进行了复查,同时,进行了3P抽样样木和平均木生长率的调查。现将结果汇总分析如下: 一、调查方法 (一) 类型中心抽样层及固定样地数的确定 根据1980年类型中心抽样固定样地复查和1985年小班调查材料将全场划分为杉木、黑松、马尾松中中、马尾松中密、马尾松近中、马尾松近密成熟林、栎树、阔杂8个层。对每个层算出小班平均亩蓄积量,并在各层中选出3个接近于平均值的小班,机械布设固定样地(共设样地27个)。
Mopanshan Forest Farm is located in the southernmost Jurong County, with a total area of 24193 mu. From April to June 1984, based on the first and second types of surveys in our county, our hospital made a review of the sample plots in this type center. Meanwhile, the investigation of 3-sample wood sampling and average wood growth rate was conducted. The results are summarized as follows: First, the survey method (a) type center sampling floor and the number of fixed plots According to the 1980 type center sample fixed site review and 1985 small class survey materials will be divided into the audience Cunninghamia, black pine Masson Pine, Masson Masson, Pinus massoniana, Pinus massoniana near mature mature forest, oak tree, wide miscellaneous 8 layers. Calculate the average amount of mu for small classes in each layer, and select 3 small classes close to the average among all layers, and set up a fixed sample of machinery (totally 27 sample plots).