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国民经济要求提供森林资源变动情况的准确资料。采用目测调查的十年一期的森林经理,已不能提供森林资源变动的客观资料。因此,用数理统计法清查大面积森林资源所得到的多方面的资料,对国民经济和科学研究有特殊的意义。立陶宛加盟共和国的一些科研、数学、生产单位互相配合,于1966年用数理统计方法进行了森林资源清查试生产。并在1969年以前清查了各林管区和森工企业的森林蓄积量及其连年生长量。1969年对全加盟
National economy requires accurate information on changes in forest resources. Forest managers using a 10-year visual survey have failed to provide objective information on changes in forest resources. Therefore, it is of special significance for the national economy and scientific research to use various methods of mathematical statistics to check the large amount of forest resources. A number of scientific research, mathematics and production units in the Republic of Lithuania joined each other and in 1966 conducted a trial production of forest inventory using mathematical statistics. And before 1969, the inventories of forest area and forestry enterprises in each forest area and their annual growth volume were checked. 1969 on the all-encompassing