长白落叶松人工林多目标经营模式研究

宋磊, 金星姬, PUKKALA Timo, 李凤日

南京林业大学学报(自然科学版) ›› 2023, Vol. 47 ›› Issue (2) : 150-158.

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南京林业大学学报(自然科学版) ›› 2023, Vol. 47 ›› Issue (2) : 150-158. DOI: 10.12302/j.issn.1000-2006.202201034
研究论文

长白落叶松人工林多目标经营模式研究

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Research on multi-objective management schedules of Larix olgensis plantations

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摘要

【目的】我国林业目前处于提高森林资源质量和转变发展方式的关键阶段,林分水平的经营决策对科学制订森林经营规程、提高森林质量具有重要意义。利用模拟-优化系统,探究不同林分条件下的最佳经营模式,可为提高黄花落叶松(Larix olgensis)(俗名长白落叶松)人工林多目标经营水平提供理论基础和实施方案。【方法】以标准长白落叶松人工幼龄林为研究对象,利用多属性效用函数和妥协性分析构建包括净现值、大径材产量和林木碳储量的多目标经营模型,链接林分生长模型与粒子群优化算法,优化不同经营方程并提出经营模式。【结果】在不同造林密度(2 500和3 300株/hm2)及不同地位指数(16~22 m)下两种多目标方程(MOF1和MOF2)估算的林分主伐年龄为54~96 a,净现值为38 047.8~109 194.9 元/hm2,大径材年均产量为1.8~4.4 m3/(hm2·a),轮伐期内年均林木碳储量为59.7~103.1 t/(hm2·a)。随着林木碳储量权重的增加(从MOF1到MOF2),大径材产量提高,但净现值降低。【结论】本研究提出的多目标经营模式可以满足对木材产量、质量和经济效益的需求,同时兼顾了森林碳储量,其中多目标经营方程MOF1是权衡各目标效益的折中方案,研究结论对提升我国森林多功能经营管理水平具有重要借鉴意义。

Abstract

【Objective】 At present, China’s forestry is in a critical stage of improving the quality of forest resources and transforming the development pattern. Management decisions at the stand level are of great significance for formulating forest management schedules scientifically and improving forest quality. In this study, a simulation-optimization system was used to identify the optimal management schedules for different stand conditions of larch (Larix olgensis) plantations. The results provide a theoretical foundation and silvicultural planning for multi-objective management of larch plantations.【Method】 Multi-attribute utility function and compromise analyses were applied to construct an objective function for multi-functional forestry including net present values, large log production, and forest carbon storage during the rotation, based on standard young larch plantations. Basic growth and yield models linked with the particle swarm optimization algorithm were used to the optimize forest management under different objective functions. The results were used to propose management guidelines for larch plantations.【Result】 The rotation lengths with the two multi-objective utility functions (MOF1 and MOF2) under different planting densities (2 500 trees per hm2 and 3 300 trees per hm2) and different site indices (16-22 m) were 54-96 years; the net present value ranged from 38 047.8 to 109 194.9 yuan/hm2, the mean annual large log production was 1.8-4.4 m3/hm2, and the average forest carbon storage was 59.7-103.1 t/hm2 during the rotation. With the increasing weight of forest carbon storage (from MOF1 to MOF2), large log production increased, but was achieved at the cost of the reduced net present value.【Conclusion】 The multi-objective management schedules proposed in the study can simultaneously satisfy the demand for wood production, quality, and economic profitability. At the same time, carbon storage of the forest is considered. The multi-objective utility function MOF1 is a compromise between different management objectives. This study provides an important reference for improving the multi-functional forest management in China.

关键词

长白落叶松(黄花落叶松)人工林 / 多目标经营模式 / 净现值 / 大径材产量 / 碳储量

Key words

Larix olgensis plantation / multi-objective management schedules / net present value / large log production / carbon stock

引用本文

导出引用
宋磊, 金星姬, PUKKALA Timo, . 长白落叶松人工林多目标经营模式研究[J]. 南京林业大学学报(自然科学版). 2023, 47(2): 150-158 https://doi.org/10.12302/j.issn.1000-2006.202201034
SONG Lei, JIN Xingji, PUKKALA Timo, et al. Research on multi-objective management schedules of Larix olgensis plantations[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2023, 47(2): 150-158 https://doi.org/10.12302/j.issn.1000-2006.202201034
中图分类号: S757   

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基金

国家自然科学基金区域创新发展联合基金项目(U21A20244)
国家自然科学基金面上项目(32071758)
中央高校基本科研业务费专项资金项目(2572020BA01)

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