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瑞典的国家森林资源调查开始于1923年,从1953年起,外业调查成为一种连续性的作业,每年都抽取全国的部分地区进行调查。调查工作已经为制定森林资源调查规划,及国家,地方的综合利用提供了情报。收集的情报越来越详细。系统抽样从一开始就得以应用。从1953年开始了所谓的“方阵”方法的应用,即沿方形各边设置样地。至今仍然使用临时样地,为了适应森林资源的消长情况,将在1983年使用部分复位的抽样技术设立固定样地。
The Swedish National Forest Inventory began in 1923 and from 1953 the field survey became a continuous operation, drawing in parts of the country each year for investigation. The investigation has provided intelligence for the planning of forest resources investigation and the comprehensive utilization of the country and the place. Intelligence collected more and more detailed. System sampling has been applied from the very beginning. From 1953 the so-called “square” method was applied, setting the sample plots along the sides of the square. Temporary plots are still in use today. In order to accommodate the growth and decline of forest resources, a fixed-plot will be established in 1983 using partial reset sampling techniques.