树木轮伐模型研究云杉最佳轮伐周期
Study on the Best Rotation Cycle of Spruce by Tree Rotation Model

本文对Faustmann模型和树高模型进行优化，得到树木轮伐模型。再对华北云杉的最佳轮伐期进行探究，将森林价值分为碳收益和木材收益，根据两者的单价计算出所探究的森林两者的收益。再根据树木轮伐模型算出最大净收益以及林地期望值即总收益最高时的树龄为最佳轮伐期，树林成长到该阶段时采伐而产生的碳收益和木材收益之和的总收益达到最高。最后综合考虑森林生态价值和经济价值得出，云杉最佳轮伐期为23年。
In this paper, Faustmann model and tree height model are optimized, and the tree rotation model is obtained. Then, the best rotation period of Picea crassifolia was explored, and the forest value was divided into carbon income and wood income. According to the unit price of the two, the income of the explored forest was calculated. Then, according to the tree rotation model, the maximum net income and the expected value of forest land, that is, the age when the total income is the highest, are calculated as the best rotation period. When the forest grows to this stage, the total income of the sum of carbon income and wood income generated by cutting reaches the highest. Finally, considering the ecological value and economic value of the forest, it is concluded that the best rotation cutting period of spruce is 23 years.