河南省枫杨立地指数表的编制

Design of site index table of Pterocarya stenoptera DC in Henan Province

依据枫杨林分不同立地的优势木树高,剔除异常值,选择树高与年龄相关系数较大,回归标准差较小,曲线与实际数据吻合度较高的代数表达式,用"树高标准差调整法"编制出"河南省枫杨立地指数表".

This paper introduced a method which called adjusting tree height standard deviation to design the site index table of Pterocarya Stenoptera DC in Henan Province.Acccording to the dominant tree height of Pterocarya stenoptera DC in different site,we deleted the abnormal value and selected a algebra expression,which has bigger correlation coefficient of tree height and tree age,smaller regression standard deviation and curve according with practice data well.