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在苏联已普遍感到用全林检尺法进行伐区调查太费工,因此从六十年代初开始,一些林业科研和调查设计部门不断试验改进伐区调查的新方法。当前所提出的一些方法基本上属于机械抽样法。这些方法是:角规或测树镜法,带状样地法和小样地法。1961——1963年全苏和列宁格勒林业研究等单位提出的第一个方法是用角规求算立木总断面积,测定10株优势种树高(中间粗度级4株,前面粗度级和后面粗度级各3株)确定其树高,组成树种的树高按量测中央粗度级5株立木树高求定。为了用角规确定断面积,等距离机械设
In the Soviet Union, it was generally felt that it was too labor-intensive to carry out the cutting survey by using the whole forest ruler method. Therefore, some forestry research and survey design departments have been experimenting with new methods for improving the investigation of cutting areas since the early 1960s. Some of the methods currently proposed basically belong to the mechanical sampling method. These methods are: angle gauge or tree trunking method, strip sample method and sample method. 1961 - 1963 All-Soviet and Leningrad forestry research units and other units proposed the first method is the use of angular rule for the total area of standing wood, determination of the dominant species of 10 tree height (intermediate coarseness level 4, the former roughness Level and the thickness of the back of the three each) to determine the height of the tree, tree height composition of the tree by the measurement of the central coarseness level 5 tree height to be determined. In order to determine the cross-sectional area with the angle, equidistant mechanical design