APPLICATION OF GREY SYSTEM THEORY TO FORECAST THE GROWTH OF LARCH

In this paper, based on grey system theory, the general GM(1,1) forecasting model for the growth of Japanese Larch in Liaoning Province was set up and it has been proof-tested in model precision.Verifled by use of the dates of the Japanese Larch with age of 21 and 22, it has been proved that the model was efiective in practice. The relative error of GM(11) model for mean DBH was 2.4%and 3.69%, respectively.The relative error of GM(11) model for mean tree height was 3.31%,4.69%, respectively.All of them were less than 5,which indicated that there were good results for estimation by forecasting.