河南省平原绿化检查中样方抽取方法研究

Study on Application of Mathematical Statistics in Inspection of Plain Greening

在收集以往材料的基础上，本文应用数理统计原理和方法进行了研究，认为过去平原绿化检查中采用的系统抽样方法精度偏低，结合河南平原林业的特点，提出了求算样方数的简便方法，并认为整群抽样比较符合河南实际．

Based on data collected in the past 5 years, in use of the theory and methods of mathematical statistics, the authors think that the precision of system sampling of plain greening is low through study. The paper also puts forward a simple way of evaluating achievements of plain greening in Henan province.