结构调控对人工用材林生长及生理生态过程影响研究进展
Research Progress in the Effect of Structure Regulation on the Growth and Physiological Ecological Processes of Artificial Timber forests
结构调控是人工用材林培育过程中的关键技术,主要包括通过间伐进行密度调控以及通过修枝进行树体管理。间伐与修枝作为两项重要的结构调控措施,广泛应用于人工用材林的培育与管理中,能够有效改善林分结构、促进林木生长并提高出材品质,对用材林产量与质量的提升具有重大意义。有关林分结构调控对人工用材林林木生长影响开展的多项研究结果表明,结构调控能够从多方面促进人工用材林林木生长,但这种促进作用受到间伐修枝强度、处理后经历的年限及立地条件等因素的显著影响。人工用材林多项材质指标与种植密度密切相关,通过间伐进行密度调控能够促进林木生长、提高林分出材率;通过修枝对林木进行树体管理则能够改善林木冠层结构、培育优良干形,并减少木材缺陷、提高木材品质。同时,科学的结构调控措施通过改善人工用材林环境条件,在激发林木养分运输、光合作用等生理活动的积极响应上也具有重要意义。文中从冠层结构、生长、干形材质等方面综述目前国内外人工用材林结构调控的研究进展,阐述分析了结构调控在生理生态过程上的作用机理,并从间伐与修枝耦合效果、结构调控作用机理分析、结构调控模型构建等方面对未来开展人工用材林结构调控理论与技术创新进行了展望,以期能够为未来相关领域的研究发展提供参考。
Structural regulation is a key technology in the cultivation process of artificial timber forests,mainly including density regulation through thinning and tree management through pruning.Thinning and pruning,as two important structural control measures,are widely used in the cultivation and management of artificial timber forests.They can effectively improve forest structure,promote tree growth,and improve timber quality,which is of great significance for improving the yield and quality of timber forests.Multiple studies on the impact of forest structure regulation on the growth of artificial timber forests have shown that structure regulation can promote the growth of artificial timber forests from multiple aspects,but this promotion effect is significantly influenced by factors such as thinning pruning intensity,the number of years experienced after treatment,and site conditions.Multiple material indicators of artificial timber forests are closely related to planting density.Density regulation through thinning can promote tree growth and increase stand yield;Managing trees through pruning can improve their canopy structure,cultivate excellent stem shapes,reduce wood defects,and improve wood quality.At the same time,scientific structural regulation measures are of great significance in stimulating positive responses to physiological activities such as nutrient transport and photosynthesis in artificial timber forests by improving environmental conditions.The article reviews the current research progress in the regulation of artificial timber forest structure at home and abroad from the aspects of canopy structure,growth,and stem material.It elaborates and analyzes the mechanism of structural regulation in physiological and ecological processes,and looks forward to future theoretical and technological innovations in the regulation of artificial timber forest structure from the coupling effect of thinning and pruning,the analysis of structural regulation mechanism,and the construction of structural regulation models,In order to provide reference for future research and development in related fields.
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