不同抚育强度下人工林水源涵养特征及功能树种筛选

王珂晗, 卞正平, 杨安娜, 李东宾, 李修鹏, 余敏芬, 许洺山, 杨晓东

南京林业大学学报(自然科学版) ›› 2026, Vol. 50 ›› Issue (5) : 119-130.

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南京林业大学学报(自然科学版) ›› 2026, Vol. 50 ›› Issue (5) : 119-130. DOI: 10.12302/j.issn.1000-2006.202602014
专题报道Ⅱ:森林生态系统水分调控与水土保持功能(执行主编 张金池 姜姜)

不同抚育强度下人工林水源涵养特征及功能树种筛选

作者信息 +

Impacts of varied tending intensities on water conservation capacity of plantations and screening of functional species

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文章历史 +

摘要

【目的】探究不同抚育强度对森林土壤持水能力的影响,为森林水源涵养功能提升和抚育经营优化提供科学依据。【方法】以宁波四明山典型人工林为研究对象,对未抚育、轻度、中度和重度抚育4种样地测定土壤持水指标与植物功能性状,通过单因素方差分析、主成分分析(PCA)和线性混合效应模型(LMM)分析抚育强度对土壤持水能力及群落功能性状组合的影响及其调控机制,并筛选水源涵养优势树种。【结果】①土壤最大、最小及毛管持水量均在轻度抚育下达到最高,分别为332.06、232.73和273.18 t/hm2,随抚育强度增加显著下降(P <0.05);非毛管持水量则随抚育强度增加而升高,重度抚育下最高(106.82 t/hm2);②抚育强度对基径、树高、树冠面积和单叶面积等生长结构性状影响显著(P <0.05),而对比叶面积、叶片干物质含量等资源利用性状的影响不显著;③林分生长结构性状与资源利用性状对综合持水能力均有正向效应,且轻度抚育样地最高;④物种间水源涵养潜力差异明显,日本扁柏(Chamaecyparis obtusa)标准化水源涵养能力得分最高(1.00),黄山松(Pinus hwangshanensis)(0.79)和橉木(Prunus buergeriana)(0.67)次之。【结论】抚育强度通过调控群落功能性状组合影响森林土壤持水能力,轻度抚育下土壤持水能力最优,表明适度抚育是提升人工林水源涵养功能的有效经营措施;日本扁柏、黄山松和橉木具有较高水源涵养潜力,可作为水源涵养型人工林营建的优选树种。

Abstract

【Objective】This study aims to investigate the effects of different tending intensities on forest soil water-holding capacity, so as to provide a scientific basis for enhancing water conservation functions and optimizing tending management.【Method】Typical plantation forests in the Siming Mountain area of Ningbo were selected. Soil water-holding capacity indicators and plant functional traits were measured in four tending treatments: unmanaged, light tending, moderate tending, and heavy tending. One-way analysis of variance (ANOVA), principal component analysis (PCA), and linear mixed-effects models (LMM) were employed to evaluate the effects of tending intensity on soil water-holding capacity, community functional trait composition, and the underlying regulatory mechanisms, and to identify species with high water conservation potential.【Result】(1) Maximum water-holding capacity, minimum water-holding capacity, and capillary water-holding capacity all attained their highest values under light tending, reaching 332.06, 232.73, and 273.18 t/hm2, respectively, and declined significantly with increasing tending intensity (P < 0.05). In contrast, non-capillary water-holding capacity increased with tending intensity and reached its maximum under heavy tending (106.82 t/hm2). (2) Tending intensity significantly affected growth-structural traits, including basal diameter, tree height, crown area, and individual leaf area (P < 0.05), whereas resource-use traits such as specific leaf area and leaf dry matter content did not differ significantly among treatments. (3) Both growth-structural traits and resource-use traits exerted positive effects on the integrated soil water-holding capacity, with the strongest positive effect observed under light tending. (4) Water conservation potential varied considerably among species. Chamaecyparis obtusa exhibited the highest standardized water conservation score (1.00), followed by Pinus hwangshanensis (0.79) and Prunus buergeriana (0.67).【Conclusion】Tending intensity influences forest soil water-holding capacity by regulating community functional trait combinations. Soil water-holding capacity was optimal under light tending, indicating that appropriate tending is an effective management strategy for improving the water conservation function of plantation forests. Chamaecyparis obtusa, Pinus hwangshanensis, and Prunus buergeriana possess high water conservation potential and can be recommended as preferred species for the establishment of water-conservation-oriented plantations.

关键词

人工林 / 土壤持水能力 / 抚育 / 间伐 / 群落功能 / 功能树种 / 功能性状组合 / 线性混合效应模型

Key words

plantation / soil water holding capacity / tending / thinning / community function / functional species / functional trait combination / linear mixed-effects model

引用本文

导出引用
王珂晗, 卞正平, 杨安娜, 等. 不同抚育强度下人工林水源涵养特征及功能树种筛选[J]. 南京林业大学学报(自然科学版). 2026, 50(5): 119-130 https://doi.org/10.12302/j.issn.1000-2006.202602014
Wang Kehan, Bian Zhengping, Yang Anna, et al. Impacts of varied tending intensities on water conservation capacity of plantations and screening of functional species[J]. Journal of Nanjing Forestry University (Natural Sciences Edition). 2026, 50(5): 119-130 https://doi.org/10.12302/j.issn.1000-2006.202602014
中图分类号: S718.5   

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基金

宁波市科技计划(2024S123)
国家自然科学基金项目(42371027)

责任编辑: 孟苗婧
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