韶关市森林植被碳储量与碳密度动态研究  

Dynamic Study on Carbon Storage and Carbon Density of Forest Vegetation in Shaoguan City

作　　者：张亮 ZHANG Liang(Guangdong Forestry Survey and Planning Institute,Guangzhou,Guangdong 510520,China)

机构地区：[1]广东省林业调查规划院,广东广州510520

出　　处：《林业与环境科学》2024年第5期88-94,共7页Forestry and Environmental Science

摘　　要：为了解森林资源的动态变化是森林经营和研究的基础,研究通过对2018—2023年间韶关市乔木林面积、碳储量和碳密度进行详细分析,揭示了不同森林类型和龄组在碳储量方面的变化趋势。结果显示,尽管乔木林的总面积从122.17×10^(5) hm^(2)减少到117.11×10^(5) hm^(2),但碳储量增加了8.57%,达到4231.61×10^(5) t。阔叶混交林的碳储量明显增加了70.52×10^(5) t;针叶混交林和针阔混交林的碳密度分别为53.11 t·hm^(-2)和51.39 t·hm^(-2),明显高于乔木林的平均碳密度39.72 t·hm^(-2),表明了这些森林类型在碳吸收和储存方面的高效性以及在碳储量管理中的重要性。中龄林、幼林龄和近熟林面积之和占比高达82.11%,中龄林和近熟林2023年的碳储量之和占乔木总碳储量的63.82%,表明韶关市的森林年龄结构合理,具有较大的碳储量和碳增长潜力。此外,韶关市天然林的碳密度5年间增加了5.66 t·hm^(-2),而人工林则降低了1.63 t·hm^(-2),这表明天然林在碳储量管理中具有更高的效率和潜力。基于这些发现,建议加强天然林保护和多树种混交造林,以提升碳储量和应对气候变化。Understanding the dynamics of forest resources is fundamental to forest management and research.This study provides a detailed analysis of the area,carbon storage,and carbon density of arboreal forests in Shaoguan city from^(2)018 to 2023,highlighting the trends in carbon storage across different forest types and age groups.Despite a reduction in the total area of arboreal forests from 122.17×10^(5) hm^(2) to 117.11×10^(5) hm^(2),carbon storage increased by 8.57%,reaching 4231.61×10^(5) t.Notably,the carbon storage of mixed broadleaved forests increased significantly by 70.52×10^(5) t.The carbon densities of mixed coniferous forests and mixed coniferous and broadleaf forests were 53.11 t·hm^(-2) and 51.39 t·hm^(-2),respectively,which were significantly higher than the average carbon density of arboreal forests at 39.72 t·hm^(-2).This underscores the high efficiency of these forest types in carbon absorption and storage,as well as their critical role in carbon management.The combined area of middle-aged,young,and near-mature forests accounted for 82.11%of the total forest area,with the carbon storage of middle-aged and near-mature forests in 2023 comprising 63.82%of the total carbon storage of arbor forests.This indicates a well-balanced age structure in Shaoguan city′s forests,with substantial potential for carbon storage and growth.Additionally,the carbon density of natural forests in Shaoguan city increased by 5.66 t·hm^(-2) over five years,while that of artificial forests decreased by 1.63 t·hm^(-2).This highlights the superior efficiency and potential of natural forests in carbon storage management.Based on these findings,it is recommended to strengthen natural forest protection and mixed-species afforestation to increase carbon stocks and address climate change.

关 键 词：乔木林 碳储量 碳密度 林龄 

分 类 号：S757.2[农业科学—森林经理学]