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本文结合兴胜村防护林体系多年实际调查资料，利用灰色系统理论对体系的立木蓄积年增长率和立木蓄积量分别进行了建模和预测，并根据出材率和木材价格估算，得到该体系木材产值的预测区间和预测值，为防护林体系效益估算和预测提供了新的方法。
Based on the actual investigation data of Shelterbelt Forest System in Xingsheng Village for many years, this paper uses the gray system theory to model and predict the annual growth rate and stock volume of standing tree in the system respectively. According to the timber yield and timber price estimation, The forecast interval and forecast value of output value provide a new method for estimating and predicting the benefit of shelterbelt system.