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植物研究 ›› 2025, Vol. 45 ›› Issue (2): 241-253.doi: 10.7525/j.issn.1673-5102.2025.02.010

• 研究论文 • 上一篇    

鲁西黄泛平原不同林龄杨树人工林碳储量分布格局及影响因素分析

郭玉伟1, 梁晶2, 伍海兵2, 周传杰1, 孙琳琳1, 王志保1(), 李晓茹1, 陈祥凤1, 李木兰1   

  1. 1.聊城大学农业与生物学院,聊城 252000
    2.上海市园林科学规划研究院,上海 200231
  • 收稿日期:2024-11-20 出版日期:2025-03-20 发布日期:2025-04-04
  • 通讯作者: 王志保 E-mail:1157842491@qq.com
  • 作者简介:郭玉伟(1999—),女,硕士研究生,主要从事森林生态研究。
  • 基金资助:
    聊城大学大学生创新创业训练计划项目(cxcy260);聊城大学风景园林学科建设基金项目(319462212);聊城大学博士科研启动项目(318052123)

Ecosystem Carbon Storage Distribution and Influencing Factors in Different-aged Poplar Plantations in the Yellow River Floodplain in Western Shandong, China

Yuwei GUO1, Jing LIANG2, Haibing WU2, Chuanjie ZHOU1, Linlin SUN1, Zhibao WANG1(), Xiaoru LI1, Xiangfeng CHEN1, Mulan LI1   

  1. 1.Faculty of Agriculture and Biology,Liaocheng University,Liaocheng 252000
    2.Shanghai Academy of Landscape Architecture Science and Planning,Shanghai 200231
  • Received:2024-11-20 Online:2025-03-20 Published:2025-04-04
  • Contact: Zhibao WANG E-mail:1157842491@qq.com

摘要:

为探明鲁西黄泛平原不同林龄杨树(Populus)人工林生态系统碳储量与环境因子的关系,揭示不同林龄杨树人工林的固碳机制,该研究采用野外踏查和室内分析的方法,对鲁西黄泛平原草地(CK)和4个不同林龄(10、30、40、50 a)杨树人工林的乔木层、草本层、凋落物层、土壤层碳储量分布格局和影响因素进行研究。结果表明:随林龄增长杨树人工林乔木层和凋落物层的生物量占比逐渐上升,草本层的生物量占比逐渐下降,其中乔木层的生物量占总生物量比值最大(93.21%~96.17%),凋落物层次之(3.99%~3.20%),草本层最小(2.84%~0.63%)。杨树人工林碳含量平均值为乔木层50 a最高(420.40 g?kg-1),草本层10 a最高(365.86 g?kg-1),凋落物层30 a最高(398.67 g?kg-1),均显著高于各龄组,土壤层碳含量随林龄增长显著上升。随林龄增长杨树人工林碳储量整体呈增加趋势,由高到低依次为乔木层(975.81 t?hm-2)、土壤层(275.06 t?hm-2)、凋落物层(38.01 t?hm-2)、草本层(19.19 t?hm-2);乔木层和土壤层是杨树人工林碳储量的主要组成部分,占总碳储量的95.31%~97.46%。相关性分析和冗余分析表明,影响杨树人工林碳储量的关键因子为树高(H)、土壤有机质(SOM)、胸径(DBH)和林分密度(SD)。研究结果可为鲁西黄泛平原杨树人工林碳汇功能研究及人工林经营管理策略制定提供理论基础和数据支持。

关键词: 杨树人工林, 生物量, 碳储量, 黄泛平原

Abstract:

To reveal the carbon fixation mechanism of poplar plantations with different ages and to investigate the relationship between carbon storage and environmental factors in the Yellow River Floodplain, the distribution patterns and influencing factors of carbon storage in the tree layer, herb layer, litter layer, and soil layer of grassland (CK) and four distinct-aged (10, 30, 40, 50 a) poplar plantations in the Yellow River Floodplain were examined by field surveys and indoor analysis, respectively. The results showed that the proportion of biomass in the herb layer of the poplar plantation decreased gradually, and the proportion of biomass in the tree and litter layers progressively increased with the increase of stand age. The ratio of biomass in the tree layer to total biomass was the highest (93.21% to 96.17%), followed by the litter layer (3.99% to 3.20%), and in the herb layer was the lowest(2.84% to 0.63%). The average carbon content of the poplar plantations was the highest in tree layer of 50-a plantation(420.40 g?kg-1), in herb layer of 10-a plantation(365.86 g?kg-1), and in litter layer of 30-a plantation(398.67 g?kg-1) and the average carbon content of soil layer increased significantly with the increase of stand age. The carbon storage of poplar plantation increased with age, and the distribution pattern was tree layer(975.81 t?hm-2)>soil layer(275.06 t?hm-2)>litter layer(38.01 t?hm-2)>herb layer(19.19 t?hm-2), the soil layer and tree layer were the main components of carbon storage of poplar plantation, accounted for 95.31% to 97.46% of the total carbon storage. Correlation and redundancy analysis showed that tree height(H), soil organic matter(SOM), diameter at breast height(DBH), and stand density (SD) were the main environmental factors influencing carbon storage in poplar plantations. The results can provide a theoretical basis and data support for the carbon sink function of poplar plantation forests and the management strategy of plantation forests in the Yellow River Floodplain.

Key words: poplar plantations, biomass, carbon storage, Yellow River Floodplain

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