一、问题的提出 最近几年,南方各省(区)林业重点县陆续开展了森林经理二类调查,一般采用的方法是“抽样控制总体法”,即以县为单位、作为一个总体,在总体范围内,结合小班调查设置样地,样地往往是为县级连续清查体系 First, the issue raised In recent years, the southern provinces (autonomous regions) forestry priorities in succession launched two types of forest managers survey, the general method used is “Sampling Control Law”, that is, as a unit, as a whole, in the overall Within the scope of the survey, small plots set up a sample site, plots are often for the county-level continuous inventory system