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对传统的模拟测算法进行改进,以露水河林业局东升林场森林资源小班数据库为基础,测算了“十二五”期间商品林的合理采伐量,并模拟了在此采伐影响下森林资源动态变化。结果表明:经过30年的采伐,成熟林和过熟林面积之和占商品林的比例由41.62%调整到42.02%,成熟林面积大幅度增加,过熟林面积大幅度减少,森林资源结构得到优化;经过前5年的采伐,商品林蓄积由189.14万m3增为193.29万m3,森林资源消耗量低于生长量;每公顷蓄积由起初的134.85m3增加到137.80 m3;前5年合理年均采伐面积为182.42hm2,年均合理采伐蓄积为3.59万m3,可作为“十二五”期间调整采伐限额的依据。
Based on the database of small forest resources of Dongsheng Forest Farm of Lushuihe Forestry Bureau, the reasonable logging amount of commercial forest during the “12th Five-Year Plan” period was calculated and the forest resources under the influence of this logging were simulated Dynamic changes. The results showed that after 30 years of harvesting, the proportion of mature forest and over-mature forest in commercial forest was adjusted from 41.62% to 42.02%, the area of mature forest increased greatly, the area of over-mature forest decreased significantly and the structure of forest resources was obtained After the first 5 years of harvesting, the volume of commercial forest increased from 1.891 million m3 to 1.9329 million m3, and the consumption of forest resources was lower than the growth rate. The accumulation per hectare increased from 134.85 m3 to 137.80 m3 in the first five years. The harvesting area is 182.42hm2, and the average annual harvesting and harvesting volume is 35,900m3, which can be used as the basis for adjusting the cutting quota during the “Twelfth Five-Year Plan” period.