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林业科学 ›› 2026, Vol. 62 ›› Issue (1): 57-66.doi: 10.11707/j.1001-7488.LYKX20250043

• 研究论文 • 上一篇    下一篇

油松、栓皮栎幼苗种内和种间竞争对根系结构与非结构性碳水化合物的影响

袁鑫1,张梦帆2,王佳茜1,*(),邵占海5,王颖4,刘勇1,万芳芳3,高发明6,李国雷1,*()   

  1. 1. 林木资源高效生产全国重点实验室 北京林业大学 北京 100083
    2. 石家庄市园林绿化管护中心 石家庄 050065
    3. 安徽省林木资源培育重点实验室 安徽农业大学 合肥 230036
    4. 北京市西山试验林场管理处温泉种质资源站 北京 100093
    5. 北京市永定河休闲森林公园管理处 北京 100041
    6. 北京金都园林绿化有限责任公司 北京 100140
  • 收稿日期:2025-01-25 修回日期:2025-03-07 出版日期:2026-01-25 发布日期:2026-01-14
  • 通讯作者: 王佳茜,李国雷 E-mail:wjx198979@163.com;glli226@163.com
  • 基金资助:
    国家重点研发计划项目子课题(2024YFD2201003,2024YFD2200404);国家自然科学基金项目(32101503,32401558);北京林业大学“5·5工程”科研创新团队项目 (BLRC2023B08)。

Effects of Intraspecific and Interspecific Competition of Quercus variabilis and Pinus tabuliformis Seedlings on Root Structure and Non-Structural Carbohydrates

Xin Yuan1,Mengfan Zhang2,Jiaxi Wang1,*(),Zhanhai Shao5,Ying Wang4,Yong Liu1,Fangfang Wan3,Faming Gao6,Guolei Li1,*()   

  1. 1. National Key Laboratory of Efficient Production of Forest Resources Beijing Forestry University Beijing 100083
    2. Shijiazhuang Landscape Management and Conservation Center Shijiazhuang 050065
    3. Anhui Provincial Key Laboratory of Forest Resources Cultivation Anhui Agricultural University Hefei 230036
    4. Wenquan Germplasm Resources Station, Beijing Xishan Experimental Forest Farm Management Office Beijing 100041
    5. Beijing Yongdinghe Leisure Forest Park Administration Office Beijing 100089
    6. Beijing Jindu Landscaping & Afforesting Co. Ltd. Beijing 100140
  • Received:2025-01-25 Revised:2025-03-07 Online:2026-01-25 Published:2026-01-14
  • Contact: Jiaxi Wang,Guolei Li E-mail:wjx198979@163.com;glli226@163.com

摘要:

目的: 比较油松、栓皮栎种内和种间竞争下根系结构的可塑性和非结构性碳水化合物含量的季节性变化,阐明森林演替进程中的竞争机制,为松栎混交林的高效培育提供理论依据。方法: 以栓皮栎和油松2年生幼苗为研究对象,设置油松?油松、油松?栓皮栎、栓皮栎?栓皮栎3种竞争模式,测定根系结构性状和非结构性碳水化合物含量,采用双因素方差分析探究竞争模式和季节对根系结构和非结构碳的影响。结果: 相较于种内竞争,油松幼苗的根长、根表面积、细根和总根体积在与栓皮栎幼苗竞争中均受到抑制,栓皮栎幼苗的粗根体积在与油松幼苗的竞争中得到促进;种间竞争下油松幼苗的细根和整株的可溶性糖、淀粉、非结构性碳水化合物总量均显著低于种内竞争下的油松幼苗,而种间竞争下栓皮栎幼苗的上述指标则基本高于种内竞争下的栓皮栎幼苗,这种差异在8月末更为显著。结论: 栓皮栎幼苗在松栎幼苗种间竞争中表现出更强的适应性和竞争优势,二者会季节性调整根系结构和非结构碳水平以优化竞争策略。

关键词: 树种竞争, 根系结构, 可塑性, 非结构碳, 季节动态

Abstract:

Objective: This study aims to compare the plasticity of root system structure and the seasonal variations of non-structure carbon in interspecific and intraspecific competition between Q. variabilis and P. tabuliformis, and elucidate the competitive mechanism in forest succession, so as to provide theoretical basis for the efficient cultivation of oak-pine mixed forests. Method: Two-year-old seedlings of Q. variabilis and P. tabuliformis were used as research objects, and three competition scenarios of P. tabuliformis–P. tabuliformis, P. tabuliformis–Q. variabilis, and Q. variabilis–Q. variabilis were set up. Root system structural traits and non-structure carbon were measured, and the two-factor analysis of variance was used to explore the effects of competition scenarios and seasons on root system structure and non-structure carbon were explored using. Result: Compared with intraspecific competition, the interspecific competition of P. tabuliformisQ. variabilis inhibited the root length, root surface area, fine roots, and total root volume of P. tabuliformis seedlings, while the interspecific competition promoted the coarse root volume of Q. variabilis seedlings. The soluble sugar, starch and non-structural carbohydrate contents in fine roots and whole plant of P. tabuliformis seedlings under the P. tabuliformis–Q. variabilis interspecific competition were significantly lower than those in the P. tabuliformis intraspecific competition, while the above-mentioned indicators of Q. variabilis seedlings in the interspecific competition were basically higher than those in the Q. variabilis intraspecific competition, and the differences were even more pronounced at the end of August. Conclusion: Q. variabilis seedlings shows stronger adaptability and competitive advantage in P. tabuliformis–Q. variabilis interspecific competition. Both species can adjust their root system structure and non-structure carbon levels seasonally to optimize their competitive strategies. These findings help to understand the succession process of P. tabuliformis–Q. variabilis mixed forests and provide theoretic basis for efficient cultivation of P. tabuliformis–Q. variabilis mixed forests.

Key words: species competition, root structure, plasticity, non-structure carbon, seasonal dynamics

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