【摘要】 对目前全国营造林综合核查抽样方法的特点进行了分析,提出可用一阶单元大小不等的两阶抽样或比估计方法计算各类核实率和合格率的抽样精度,并用实例对具体计算方法进行了说明,为今后综合核查结果的精度计算提供了理论依据。更多还原

【Abstract】 The properties of sampling procedure for national afforestation integrated inspection is analyzed,and it is presented that the sampling precisions of various estimators such as true-area percentage and qualified-area percentage can be calculated by using two-stage sampling with unequal first stage sample units or ratio estimation,which provide a basis for calculation of sampling precisions of the estimators from national afforestation integrated inspection.Finally,an example is demonstrated to show the results of sampling precision.更多还原