基于Meta分析的路域植物物种丰富度变化及其影响因素

doi:10.13292/j.1000-4890.202109.026

摘要/Abstract

摘要： 探究路域植物物种丰富度变化及其影响因素可以为自然保护地管理提供依据。本研究在文献检索的基础上，选取了道路宽度、物种属性、植被类型、植物生长型和道路所属纬度等5个研究最多的因素，通过Meta分析，探讨了它们对路域植物物种丰富度变化的影响。结果发现：在这5个因素中，物种属性（是否是本地植物）对路域植物物种丰富度变化影响最大。外来植物、本地植物和不区分类型植物（在研究中不区分外来植物与本地植物）物种丰富度显著升高（幅度分别为130.5%、14.9%和27.0%），且外来植物升高幅度显著大于本地植物。路域植物物种丰富度变化幅度未随道路宽度增加表现出规律变化，但4.5 m道路宽度上下其变化幅度显著不同，4.5～26 m道路的路域植物物种丰富度显著上升（幅度为42.1%）而4.5 m以下道路无显著变化。路域植物物种丰富度在草原中变化不显著但在森林中显著升高。在针叶林、落叶阔叶林和常绿阔叶林中，物种丰富度变化幅度依次下降（分别为76.7%、38.0%和20.3%）。在针叶林中，2.75 m道路宽度上下路域植物物种丰富度变化幅度显著不同，小于2.75 m道路的路域植物物种丰富度变化幅度显著低于2.75～26 m道路（分别为18.8%、74.0%）。在森林路域中，灌木层与草本层植物物种丰富度显著升高（分别为16.2%、37.6%），但乔木层无显著变化。道路所属纬度对路域植物物种丰富度变化幅度无显著影响。

关键词: 道路, 宽度, 路域, 植物物种丰富度, 影响因素

Abstract: Studying the variation pattern and its influencing factors of plant species richness in road area can provide references for the management of nature protected areas. Based on literature, we selected five influencing factors that have been most frequently studied, including road width, species attributes, vegetation types, plant growth forms, and latitude to which the road belongs. Their effects on plant species richness in road area were investigated by Meta-analysis. The results showed that, among those five factors, species attributes (native species or not) had the greatest effects on the variation range of plant species richness in road area. The species richness of alien species, native species and unclassified species (alien and native species were not classified) all increased significantly (ranges were 130.5%, 14.9%, and 27.0%, respectively), with the increment of alien plants significantly exceeding that of native plants. The variation range of plant species richness in road area did not show a regular trend as road width increased. The variation range of plant species richness in road area was significantly different above and below 4.5 m road width. Plant species richness in road area did not change significantly within 4.5 m road width, while that of roads between 4.5 m and 26 m increased significantly (the range was 42.1%). The variation range of plant species richness in road area did not change in grasslands, but increased significantly in forests. In coniferous forests, deciduous broad-leaved forests, and evergreen broad-leaved forests, the elevation range of plant species richness in road area decreased (76.7%, 38.0% and 20.3%, respectively). In coniferous forests, the variation range of plant species richness in road area was significantly different above and below 2.75 m road width. Plant species richness in road area within 2.75 m road width was significantly smaller than that for roads between 2.75 and 26 m (18.8%, 74.0%, respectively). In forest road area, the species richness of herb and shrub increased significantly (ranges were 16.2% and 37.6%, respectively), while that of tree species did not change. The latitude of roads did not affect the variation range of plant species richness in road area.

Key words: road, width, road area, plant species richness, influencing factor.

王雷, 王海洋. 基于Meta分析的路域植物物种丰富度变化及其影响因素[J]. 生态学杂志, 2021, 40(9): 2945-2953.

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基于Meta分析的路域植物物种丰富度变化及其影响因素

Variation of plant species richness in road area and its influencing factors based on meta-analysis.

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