湖北农业科学 ›› 2025, Vol. 64 ›› Issue (8): 165-171.doi: 10.14088/j.cnki.issn0439-8114.2025.08.025

• 药用植物 • 上一篇    下一篇

巴山松人工林天然更新评价及其影响因子

周成1, 蔡京勇1, 陈恭平2, 王守富1   

  1. 1.湖北生态工程职业技术学院,武汉 430200;
    2.巴东县国有巴山林场,湖北 巴东 444399
  • 收稿日期:2025-03-11 出版日期:2025-08-25 发布日期:2025-09-12
  • 通讯作者: 王守富(1979-),男,湖北荆门人,教授,主要从事园林景观设计的研究工作,(电话)15827248520(电子信箱)18635285@qq.com。
  • 作者简介:周 成(1987-),男,江西景德镇人,讲师,主要从事林业生态经济的研究工作,(电话)15549440441(电子信箱)357565821@qq.com;
  • 基金资助:
    中央财政林业科技推广示范资金项目(鄂[2025]TG02-2号); 中德财政合作林业重大研究项目(zdczhz2021ky09; zdhz2023ky11)

Evaluation of natural regeneration in the Pinus henryi plantation and its influencing factors

ZHOU Cheng1, CAI Jing-yong1, CHEN Gong-ping2, WANG Shou-fu1   

  1. 1. Hubei Ecology Polytechnic College, Wuhan 430200, China;
    2. Bashan Forest Farm of Badong County, Badong 444399, Hubei, China
  • Received:2025-03-11 Published:2025-08-25 Online:2025-09-12

摘要: 分析巴山林场巴山松(Pinus henryi)人工林天然更新及其影响因子,为以经营手段促进巴山松人工林天然更新提供理论依据。依据调查数据,分析不同高度级(<30 cm、30 cm≤H<50 cm、≥50 cm)天然更新苗的密度结构,采用折算后的 I 级密度对其更新质量进行等级评价,同时构建更新指数综合评价体系,并探究天然更新的影响因素。结果表明,各样地主要天然更新树种的重要值之和均超过60%,尾叶樱桃(Prunus dielsiana)在大部分样地中占主导地位。通过折算后的I级密度评估,筛选出不同样地更新幼苗质量差异。更新密度、平均苗高和大苗百分比对更新效果影响明显。综合评价系数最高的是样地3和样地2,而样地5和样地6的综合评价系数最低。更新指数与与林分胸径、树高呈正相关,与林分密度呈负相关。较大林分胸径和较高开敞度有助于促进天然更新,而林分密度过高则抑制天然更新。尾叶樱桃等先锋阔叶树种的天然更新有助于巴山松针叶阔叶混交林的多样性和稳定性;综合系数评价适用于天然更新效果评价;林分胸径、密度和开敞度是影响天然更新的主导因子。合理调控林分结构可有效提升巴山松人工林的天然更新质量。

关键词: 巴山松(Pinus henryi)人工林, 天然更新, 林分结构, 影响因子

Abstract: The natural regeneration of Pinus henryi plantations in Bashan Forest Farm and the influencing factors were analyzed, to provide a theoretical basis for promoting natural regeneration through management practices. Based on survey data, the quality of natural regeneration seedlings at different height levels (<30 cm, 30 cm ≤ H < 50 cm, ≥50 cm) was assessed using the adjusted Class I seedling density, and a comprehensive evaluation system was developed to explore influencing factors of natural regeneration. The results showed that the sum of the importance values of dominant regeneration species exceeded 60% in all plots, with Prunus dielsiana dominating most of them. Obvious differences in seedling quality were observed across various plots based on adjusted I-level density. Regeneration density, seedling height, and the proportion of large seedlings had a significant impact on regeneration success. The highest comprehensive evaluation coefficients were observed in plots 3 and 2, while the lowest were in plots 5 and 6. Correlation analysis indicated that the regeneration index was positively correlated with diameter at breast height (DBH) and tree height, and negatively correlated with stand density. Stepwise regression analysis further indicated that DBH and stand openness facilitated natural regeneration, while high stand density suppressed it. Natural regeneration of pioneer broadleaf species such as Prunus dielsiana contributed to the diversity and stability of the Pinus henryi-broadleaf mixed forest. The comprehensive index evaluation proved applicable to assessing natural regeneration success. DBH, stand density, and openness index were identified as the dominant factors affecting natural regeneration. Appropriate regulation of stand structure could effectively enhance the natural regeneration of P. henryi plantations.

Key words: Pinus henryi plantation, natural regeneration, stand structure, influencing factors

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