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为了对比模拟样地与方形样地的精度和效率,在这次资源连续清查中,结合固定样地的测设,我们随机抽取了部分样点进行全距模拟样地、中距模拟样地与常规方形样地几种抽样测树方法的对比试验。情况如下: (一) 试验的具体作法: 根据随机抽中的样点,在测设固定方形样地的同时,利用方形样地的中心点,即方形样地两对角线的交点,作为全距模拟样地和中距模拟样地的样地桩,距样地桩最近的一株树为
In order to compare the precision and efficiency of simulated plots and quadrat plots, in this continuous resource inventory, combined with the survey of fixed plots, we randomly selected part of the samples for full-scale plots, Contrast Test of Several Methods of Measuring Trees in Conventional Square. The details are as follows: (1) The specific practices of the experiment: According to the randomly sampled points, while measuring the fixed square sample plots, taking the center point of the square sample plots, that is, the intersection of the two sample diagonals, The sample plots from simulated plots and mid-range simulated plots are the closest to the plots