单木造材优化嵌入传统林分经营优化中的红松人工林精准经营模式  

Precision Management Model of Pinus koraiensis Plantation with Single Wood Material Optimization Embedding into Traditional Forest Management Optimization

作　　者：徐颖[1] 蒋博 金星姬[1] Timo Pukkala Xu Ying;Jiang Bo;Jin Xingji;Timo Pukkala(Northeast Forestry University,Harbin 150040,P.R.China;University of Eastern Finland,Finland•Joensuu)

机构地区：[1]东北林业大学,哈尔滨150040 [2]东芬兰大学,芬兰•约恩苏

出　　处：《东北林业大学学报》2024年第2期13-20,共8页Journal of Northeast Forestry University

基　　金：国家自然科学基金项目(32071758、U21A20244);中央高校基本科研业务费专项资金项目(2572020BA0)。

摘　　要：以黑龙江省红松(Pinus koraiensis Siebold et Zuccarini)人工林主要分布区域的标准幼龄林(初植密度2500、3300株/hm~2,地位指数12、14、16 m)为研究对象,利用韦布尔(Weibull)函数预测株数保存率为85%时不同立地指数的红松人工林在10 a时的直径分布;依据红松人工林幼龄标准林分数据,利用人工红松单木-林分基础模型和球果模型构建的林分模拟器对标准林分进行生长模拟,在传统经营优化模式中嵌套单木造材优化,构建单木造材优化嵌入传统林分经营优化中的红松人工林精准经营模式(简称“精准林分经营优化模式”);以木材和球果总净现值最大为目标,对比精准林分经营优化模式、传统林分经营优化模式的差异,分析造材优化对林分经营优化结果、林分经营措施的影响。结果表明:在约束间伐强度和固定下层伐的条件时,与传统经营优化模式相比,精准林分经营优化模式使总经济效益提升6.5%~9.1%。立地条件越好,精准林分经营优化模式对木材净现值增长率、年均木材产量、主伐时林分平均胸径的增量影响越显著,而对年均球果产量、球果净现值增长率的增量影响较小。在同一立地条件时,与传统林分经营优化模式相比,精准林分经营优化模式提升木材净现值增长率对林分初植密度更敏感。The standard young stands(initial planting density of 2500,3300 trees/hm 2,site index of 12,14,and 16 m)of Pinus koraiensis plantation in the main distribution area of Heilongjiang Province were selected as the research objects.The Weibull function was used for predicting the diameter distribution of Korean pine plantation with different site indices at 10 years when the tree survival rate was 85%.Based on the standard young stand data of Korean pine plantation,a stand simulator constructed by the individual-stand basic models and cone model for Korean pine plantations was used to simulate the growth of the standard stand.The optimization of stem crosscutting was embedded in the traditional stand management optimization mode to construct a precise management mode for Korean pine plantation embedded in traditional stand management optimization(referred to as the“Precise Stand Management Optimization Mode”).The differences between the precise stand management optimization mode and the traditional stand management optimization mode were compared based on the objective of maximizing the net present value of timber and cones,and the effects of optimal crosscutting on the results and measures of stand management optimization were analyzed.The results showed that under the conditions of constrained thinning intensity and fixed thinning from below,compared with the traditional stand management optimization mode,the precise stand management optimization mode increased the total economic benefits by 6.5%to 9.1%.The better the site conditions,the more significant the impact of the precise stand management optimization mode on the growth rate of timber net present value,average annual timber production,and the increment of average diameter at breast height of the stand at final cutting,while the impact on the increment of average annual cone production and growth rate of cone net present value were relatively small.Under the same site conditions,compared to the traditional stand management optimization mode,the precision

关 键 词：红松 人工林 经营模式 造材优化 净现值 

分 类 号：S757.4[农业科学—森林经理学]