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早在1880年德国的则特舍就使用过抽样法和采用过在林地上均匀设置的园形标准地。随后E、格尔哈尔特(1925年)发展了则特舍的思想,提出了抽样带法。1936年r克鲁什和Φ、辽特什提出了园形标准地的半径。1956～1957年在210万公顷的林地上做了统计资源清查。这时在未经理过的林地上确定了林分的平均蓄积量。当变异系数为65%时,计算蓄积量的精度达到±5%。两年内设置了面积为25米~2、100和400米~2的园形标准地95,000个。平均1个林业局有700个标准地。1960年在萨克森,对275,000公顷国有林和133,000公顷私有林和合作林做了资源清查。为了能够经常掌握德意志民主共和国森林资源的连年变化情况,从1961年开始用统计法进行连续资源清查,采用一级分层系统抽样方案和单独设置标准地。这种资源清查方法是r、克洛斯曼提出的,他认为该法可在短期内用少量费用取得有关各个林业局或一批林业局森林资源的全部资料,而且相当精确,还可取得国家做林业规规划的资料,弄清森林资源主要调查
As early as 1880, Zetex in Germany used a sampling method and adopted a circular standard set uniformly on woodland. Then E, Gerhardt (1925) developed Zeithart’s thought and proposed a sampling belt method. In 1936 r Krush and Φ, Lottes proposed the radius of a circular pattern. From 1956 to 1957 in 2.1 million hectares of forest land to do a statistical inventory. At this time in the unmanaged forest to determine the average stock volume. When the coefficient of variation is 65%, the accuracy of calculating the volume is up to ± 5%. Within two years, 95,000 park-shaped standards of 25 to 2,100 and 400 to 2 have been set up. An average of one forestry bureau has 700 standards. In Saxony in 1960, a resource inventory of 275,000 hectares of state-owned forest and 133,000 hectares of private and cooperative forests was conducted. In order to be able to keep abreast of the changes in the forest resources in the Democratic Republic of Germany from year to year, a statistical inventory of continuous resources was conducted beginning in 1961 with a first-level stratified systematic sampling plan and a separate standard setting. This method of resource inventory is proposed by Closman. He believes that this method can obtain all the information on the forest resources of various forestry bureaus or a group of forestry bureaus in a short period of time in a short period of time, and it is quite accurate and can also be obtained by the state Forestry Planning data, identify the main survey of forest resources