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瑞士首次全国森林资源清查正在进行之中。在全国110万公顷森林中布设了约11000块样地。第一批样地于1983年3月进行了调查。这次清查将于1986年完成。对这项工作已安排
The first national forest inventory in Switzerland is under way. Approximately 11,000 plots have been laid in 1.1 million hectares of forest across the country. The first sample plots were investigated in March 1983. The inventory will be completed in 1986. Arranged for this work