Analysis and Prediction of Forestry Industrial Structure in Henan Province Based on Grey Theory

Based on the data of Henan Forestry Statistical Yearbook from 2000 to 2018, the stability of Henan forestry industrial structure systematically analyzed by using the vector angle model. Using the grey correlation analysis method, the correlation degree between the three forestry industries and the total output value in Henan Province was calculated respectively, and then the dynamic change law of its forestry industrial structure was analyzed. Through the GM(1,1) model, the future change trend of output value and output value of the three major forestry industries in Henan Province was predicted and analyzed. The results showed that the forestry structure in Henan Province changed greatly from 2000 to 2007, and the forestry industrial structure was relatively stable from 2007 to 2018. During the period from 2000 to 2018, the correlation between the output value of the secondary industry and the total output value of the forestry industry was the highest, followed by the primary industry and the tertiary industry, and a "213" industrial structure development pattern was formed. But in the next decade, with the rapid development of the tertiary industry, its output value will exceed that of the primary industry, thus forming a new “231” industrial structure development pattern.