辽宁省森林生长量(率)表的编制     

丛日健  李晓玲  周世杰 《林业资源管理》2003,(1):29-32

以全省森林资源连续清查第3次和第4次复查复位样地693块、复位样木37101株为基础数据,利用计算机归类计算,编制出全省各树种(组)森林生长量(率)表。  相似文献   

Tables to calculate means in a doubly truncated bivariate normal population     

H. D. Patterson  N. W. Simmonds 《Euphytica》1989,42(3):241-249

Summary A correlated bivariate normal distribution is divided into four sectors by double truncation. The plant breeder sometimes needs to know the means of the two variates in one or more such sectors. Tables are given to facilitate this calculation and examples of their use are presented.  相似文献