Title: Establishment of Tree Height Growth Model Based on Mixed and Nlmixed of SAS
Abstract: Based on the data of height growth in 5 plots with different densities,mixed and nlmixed of SAS were used to fit the linear and non-linear mixed models of tree height growth respectively.The height growth curve and mean height growth curve under different densities were drawn according to calculated value and fixed effect value,which showed the advantages of the mixed model,i.e.it could reflect the mean variation trend on the 5 plots and the differences among individuals at the same time.
Publication Year: 2004
Publication Date: 2004-01-01
Language: en
Type: article
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Cited By Count: 1
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