论文部分内容阅读
森林资源二类调查统计表的基础数据,来自小班调查卡片,所以对小班蓄积计算要求正确无误,方可确保统计结果的可靠性。过去小班蓄积的计算要通过查表(如形高表),同时很多情况都要使用内插的办法,才能计算出所需数值,做起来既繁琐又费工时,出错的机率也较大,需要投入大量人力完成此项工作。我们1989年开始采用数式法计算形高值的办法计算小班蓄积,并将计算式编成程序输入
The basic data of the second category of forest resources survey questionnaire comes from the small-scale survey card, so the calculation of small-scale accumulation requirements is correct to ensure the reliability of the statistical results. In the past, the calculation of small-scale accumulation was done through look-up table (such as shape and height), and in many cases, the interpolation method was used to calculate the required value. It was tedious and time-consuming to work out, and the probability of error was large. Put a lot of manpower to complete this work. We started in 1989 to calculate the value of the numerical method of calculating the formation of small classes, and the formula into the program input