黑龙江省森林资源管理局根据瑞典林学家哈格伦德教授的建议,于1984年在通河、山河屯两林业局建立了132个方阵样地与原有森林连续清查的系统抽样(相隔8×8km)设计进行对比(见图1)。试验数据在VAX小型机上进行了处理。结果表明,方阵无论从蓄积、面积估计,还是时间效率都较原方案好得多。因此1986年及以后的省级森林连续清查体系中,我们设计了部分重复替换系统群团抽样新方案。 According to the suggestion of Swedish forestry professor Hagenlung, the Heilongjiang Provincial Forest Resources Administration set up a systematic sampling of 132 square matrix plots and original forest continuous inventory in 1984 at the two forestry bureaus of Tonghe and Shahe Tuen (separated by 8 × 8km) design comparison (see Figure 1). The test data was processed on a VAX minicomputer. The results show that the square matrix is ​​much better than the original scheme in terms of accumulation, area estimation and time efficiency. Therefore, in 1986 and after the provincial forest continuous inventory system, we designed a partial repeat replacement system cluster sampling new programs.