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Heilongjiang Reclamation Area forestry is an important part of Heilongjiang province forestry. Returning farmland to forest land was fully opened in 2002 and some successes have been achieved. According to the improved GM(1,1) prediction model, the trend of the output values of primary industry of forestry and its sub-industries in 2015~2018 were predicted, which could provide some references for formulating policies to consolidate the results of returning farmland to forest land in rural areas in Heilongjiang province. The nonsmooth raw data was processed by logarithmic transform, and the background values and the initial values were adjusted according to current studies. The GM(1,1) prediction model passed through the posterior error test, residual test and correlation coefficient test. The results show that the improved GM (1, 1) prediction model not only can be used to predict the output value of forestry and other industries but also can provide some references for the comparison of prediction accuracy. Total output values of primary industry of forestry showed a growth trend and the values of the cultivation and planting of forest trees industry are higher than the other two subindustries in the next 4 years in Heilongjiang Reclamation Area.

Forecast on Forestry Sub-industries Output Value in Heilongjiang Reclamation Area Based on Comprehensive Improvement GM(1,1)