Ecology and Environmental Sciences ›› 2026, Vol. 35 ›› Issue (6): 909-921.DOI: 10.16258/j.cnki.1674-5906.2026.06.008

• Research Article [Ecology] • Previous Articles     Next Articles

Relationship between Plant Diversity and Soil Physical and Chemical Properties in Different Stands of Maolan Karst Forest

FENG Mengqi(), LONG Cuiling*(), YUAN Rongli, LI Juan   

  1. School of Geography and Environment Science, Guizhou Normal University, Guiyang 550025, P. R. China
  • Received:2025-09-04 Revised:2026-01-05 Accepted:2026-02-13 Online:2026-06-18 Published:2026-06-08

茂兰喀斯特森林不同群落类型植物多样性与土壤理化性质的关系

冯梦琪(), 龙翠玲*(), 袁荣利, 李娟   

  1. 贵州师范大学地理与环境科学学院贵州 贵阳 550025
  • 通讯作者: * 龙翠玲,E-mail: longcuiling898@163.com
  • 作者简介:冯梦琪(2001年生),女,硕士研究生,主要从事自然地理学研究。E-mail: 13677942141@163.com
  • 基金资助:
    国家自然科学基金项目(31660107);黔科合平台人才项目“退化喀斯特区土壤环境演变机制研究”([2020]6010-2);“茂兰喀斯特森林植物功能群凋落物动态及土壤环境响应机制研究”([2017]5726-45)

Abstract:

In order to further understand the relationship between plant diversity and soil physical and chemical properties in karst forests, this study took Cyclobalanopsis glauca-Pittosporum crispatum forest (CP), Litsea verticillata-Viburnum sibiricum forest (LV), and Cornus hongkongense-Euonymus fortunei forest (CE) in Maolan Karst Forest as the research objects. One-way ANOVA, redundancy analysis and other methods were used to study the differences in plant diversity and soil physical and chemical properties in different forest stands, and to explore the relationship between them, providing a theoretical basis for the protection of biodiversity and the maintenance of ecological functions in karst forests. The results showed that: 1) there were significant differences in plant diversity indexes among different community types, and the overall performance followed the trend: CP>CE>LV. Among them, the Shannon-Wiener Index, Pielou Index, functional richness, functional evenness and DBH Diversity Index of CP were significantly higher than those of LV, and the Simpson dominance and functional dispersion of LV were the highest. 2) There were significant differences in soil organic matter (SOM), total nitrogen (TN), total phosphorus (TP), total potassium (TK), available potassium (AK), soil bulk density (Bd) and soil water content (SWC) among the three forest communities, but there was no significant difference in soil pH. Among them, SOM, TP, TN and SWC of CP were the highest, Bd of LV was the highest, TK of CE was the highest, CP soil property was the best, and LV soil was the poorest. 3) The results of redundancy analysis and Monte Carlo permutation test showed that the soil physical and chemical properties of the three community types explained more than 75% of the plant diversity. Among them, SOM, AK, TN, TK and Bd were significantly correlated with plant diversity. This study reveals the mechanism of plant-soil interaction. In the karst area with high rock exposure rate and poor soil, shrub species such as Pittosporum crispatum, Viburnum bulrushii and Euonymus alatus can be preferentially planted for soil improvement to reduce soil bulk density and reduce soil erosion. After the improvement of soil environment, tree species such as Cyclobalanopsis glauca, Litsea verticillata and Dendrobenthamia hongkongensis can be gradually introduced to optimize community structure, improve community plant diversity, and enhance ecosystem stability and service functions.

Key words: Karst forest, species diversity, functional diversity, structural diversity, soil physical and chemical properties

摘要:

为深入了解喀斯特森林植物多样性与土壤理化性质的关系,该研究以茂兰喀斯特森林中的青冈栎-皱叶海桐林(Cyclobalanopsis glauca-Pittosporum crispulum)(CP)、轮叶木姜子-球核荚蒾林(Litsea verticillata-Viburnum propinquum)(LV)、香港四照花-卫矛林(Cornus hongkongensis-Euonymus alatus)(CE)为研究对象,采用单因素方差分析,冗余分析等方法研究不同群落类型植物多样性和土壤理化性质的差异,并探讨两者之间的关系,旨在为喀斯特森林生物多样性保护和生态功能维持提供理论依据。结果表明,1)不同群落植物多样性指标差异显著,整体表现为CP>CE>LV,其中,CP的香农-维纳指数、Pielou指数、功能丰富度、功能均匀度和胸径多样性指数显著高于LV,LV的Simpson优势度和功能离散度最高。2)3种群落的土壤有机质(SOM)、全氮(TN)、全磷(TP)、全钾(TK)、速效钾(AK)、土壤容重(Bd)、土壤含水量(SWC)之间差异性显著,土壤pH差异不显著,其中CP的SOM、TP、TN、SWC最高,LV的Bd最高,CE的TK最高,CP土壤属性最优,LV土壤最贫瘠。3)冗余分析及蒙特卡洛置换检验结果显示,3种群落的土壤理化性质对植物多样性的解释量均在75%以上,其中,SOM、AK、TN、TK、Bd与植物多样性存在显著关联性。该研究揭示了植物-土壤相互影响机制,在岩石裸露率高、土壤贫瘠的喀斯特区域,可优先种植如皱叶海桐、球核荚蒾和卫矛等耐贫瘠、根系发达的灌木树种进行土壤改良,以降低土壤容重,减少水土流失;在土壤环境改善后,可逐步引入青冈栎、轮叶木姜子和香港四照花等乔木树种,以优化群落结构,提高群落植物多样性,增强生态系统的稳定性和服务功能。

关键词: 喀斯特森林, 物种多样性, 功能多样性, 结构多样性, 土壤理化性质

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