College of Forestry,Northeast Forestry University,Harbin 150040,China
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文章历史+
Received
Published
2026-03-26
2026-09-20
Issue Date
2026-11-13
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摘要
为量化樟子松(Pinus sylvestris var. mongolica)人工林碳储量与木材产量之间的权衡关系,通过模拟与优化方法探索协同提升碳储量和木材产量的最佳经营策略,推动樟子松人工林的可持续经营。基于樟子松林分生长模型模拟不同立地条件下现实样地的木材产量及活立木碳库、木产品碳库和死有机质碳库的动态,利用多属性效用函数构建兼顾木材产量和碳储量的多目标方程及相应的单目标方程,并组合差分进化算法求解满足不同经营目标下的最优采伐方案。结果显示,在多目标经营中随着立地质量的提高(从14~18 m增加到21~26 m),主伐及间伐时间整体推后,年均木材产量和平均总碳储量及净现值分别平均增长46.2%、48.7%、54.7%,将木产品碳库和死有机质碳库纳入碳储量核算,平均总碳储量比仅考虑活立木碳库时增加36.2%~44.2%;相较于仅考虑木材产量的单目标经营,多目标经营的轮伐期延长7~10 a,年均木材产量降低1.6%~2.1%,平均总碳储量增长15.9%~29.5%。研究表明,采用多碳库碳储量核算方法能够更全面地反映人工林的真实固碳潜力,基于碳储量与木材产量的权衡分析,确定兼顾碳汇与木材生产的折中经营策略,在保证稳定木材产出的同时有效提升林分的固碳能力,也为樟子松人工林多目标经营提供科学依据。
Abstract
To quantify the trade-off between carbon stock and wood production in Mongolian pine plantations and to integrate simulation and optimization approaches to explore optimal management strategies that simultaneously increase carbon stock and wood production, thereby enhancing the sustainable management of Mongolian pine plantations. Based on the Mongolian pine stand growth simulator, this study investigated the dynamics of wood production and carbon stocks in the live tree carbon pool, product carbon pool, and dead organic matter carbon pool under different site indices using existing field plots. A multi-objective function incorporating wood production and carbon stock was developed using a multi-attribute utility function, together with the corresponding single-objective functions. The differential evolution algorithm was applied to derive the optimal cutting schedules under different management objectives. Results indicated that in multi-objective management, as site indices improved (site indices increasing from 14-18 m to 21-26 m), the timing of final cutting and thinning were generally postponed. Meanwhile, the mean annual wood production, average total carbon stock, and net present value increased on average by 46.2%, 48.7%, and 54.7%, respectively. When product and dead organic matter carbon pools were incorporated into the carbon accounting framework, the average total carbon stock was 36.2%-44.2% higher than that estimated by considering only the live tree carbon pool. Compared with the single-objective management regime considering only wood production, the rotation length under multi-objective management was extended by 7-10 years, while the mean annual wood production decreased by 1.6%-2.1% and the average total carbon stock increased by 15.9%-29.5%. The study showed that the multi-carbon-pool based carbon stock accounting approach provides a more comprehensive representation of the actual carbon sequestration potential of plantation forests. Based on the trade-off analysis between carbon stock and wood production, a compromise management strategy balancing carbon sequestration and wood production is identified, as it ensures stable wood production while effectively enhancing the carbon sequestration capacity of stands, thus providing a scientific basis for multi-objective management of Mongolian pine plantations.
樟子松(Pinus sylvestris var. mongholica)因其抗逆性强和速生等优良特性,成为我国东北地区主要针叶造林树种之一,在人工林建设中占据重要地位[23]。近年来,随着国家大规模造林工程的推进,樟子松人工林面积持续扩大,如何通过科学经营协调其木材生产与碳汇功能成为亟待解决的关键问题。本研究以黑龙江省樟子松人工林为研究对象,基于多属性效用函数构建包括木材产量和碳储量的多目标方程,综合考虑活立木碳库、木产品碳库和DOM碳库,利用模拟-优化系统探究樟子松人工林碳储量与木材生产之间的权衡关系,并将间伐措施纳入经营决策变量,进一步优化经营决策,探索樟子松人工林兼顾碳储量与木材生产的最优采伐方案,为樟子松人工林多目标经营提供更加全面的理论依据与决策支持。
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