SOME PROBLEMS ON FOREST SAMPLING TECHNIQUES

摘要

This paper reveaed some problems of the forest samling investigation from application.and pointed out the defects. Determining sample size method was precisely put forward from formla’s origin in simple random Samling procedure In stratified random samgling, two cases were distinguished: the variances Sh2 are equal for all h and not all Sh2 are equal This method made the assertion of making confidence interval more reliable.