| 引用本文： |
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卢家锋,康秀琴,孟皓轩.桂林市环城水系不同生境自生植物物种组成及多样性研究[J].广西科学,2024,31(6):1101-1111. [点击复制]
- LU Jiafeng,KANG Xiuqin,MENG Haoxuan.Composition and Diversity of Spontaneous Plant Species in Different Habitats of the Water System around Guilin City[J].Guangxi Sciences,2024,31(6):1101-1111. [点击复制]
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| 摘要: |
| 探究不同生境中自生植物(Spontaneous plants)的科、属、种的组成与特点，对比不同样段、生境下其多样性特征差异，可为桂林市环城水系打造低成本、低维护且具自然野趣的近自然河岸景观提供建议。本研究结合典型样地法，依据自然属性以及人为因素将环城水系生境划分为硬质岸边、半自然缓坡岸边、水边荒置地、河漫滩和自然绿地，并对不同生境的自生植物物种组成及多样性进行研究。结果表明，共记录环城水系自生植物197种，隶属78科152属，主要以菊科(Asteraceae)、禾本科(Poaceae)、豆科(Fabaceae)为主，发现外来入侵物种25种，占比13%。生活型组成丰富，其中多年生草本植物最多，有51种，占比26%。漓江段自生植物物种多样性高于其他样段。不同生境的自生植物组成和多样性存在显著差异，自然绿地最为丰富。自然绿地和水边荒置地Patrick丰富度指数较高，硬质岸边和河漫滩等人类活动频繁且环境变化大的区域物种数较低，表明保持充足的林下空间和减少人为干预是促进和维护物种多样性的关键因素。综上，不同生境下自生植物差异显著，自然绿地最为丰富，漓江段多样性高。因此，减少人为干扰、保留林下空间，对构建近自然河岸景观、提升生态系统稳定性意义重大。 |
| 关键词: 环城水系 自生植物 植物多样性 桂林市 |
| DOI：10.13656/j.cnki.gxkx.20241209.002 |
| 投稿时间：2024-06-30修订日期：2024-08-02 |
| 基金项目:国家自然科学基金项目(32260417)和广西重点研发计划项目(桂科AB22080057，AB23026053)资助。 |
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| Composition and Diversity of Spontaneous Plant Species in Different Habitats of the Water System around Guilin City |
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LU Jiafeng1, KANG Xiuqin1,2, MENG Haoxuan1
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| (1.College of Tourism & Landscape Architecture, Guilin University of Technology, Guilin, Guangxi, 541006, China;2.Institute of Guangxi Tourism Industry, Guilin University of Technology, Guilin, Guangxi, 541006, China) |
| Abstract: |
| Exploring the composition and characteristics of spontaneous plants at the family,genus,and species levels in different habitats and comparing the diversity of spontaneous plants in different sampling sections and habitat types can provide suggestions for creating a near-natural riverbank landscape with a low-cost and low maintenance in the water system around Guilin City.The habitats of the water system were classified into hard shores,semi-natural gentle slope shores,waterside wasteland,flood plains,and natural green areas based on natural attributes and human factors.The typical plot method was employed to study the species,composition,and diversity of spontaneous plants in different habitats.The results showed that a total of 197 native plant species were recorded in the water system,belonging to 152 genera of 78 families,which were mainly dominated by Asteraceae,Poaceae,and Fabaceae.In addition,25 invasive alien species were identified,accounting for 13%.The plants showed rich life forms,in which perennial herbaceous plants were the richest,with 51 species accounting for 26%.The spontaneous plant diversity in the Lijiang River section was higher than that in other sections.The composition and diversity of spontaneous plants differed significantly among different habitat types,with the highest richness in natural green areas.Natural green areas and waterside wasteland showed higher Patrick richness index,while the areas with frequent human activities and large environmental changes such as hard shores and flood plains had fewer species,which indicated that maintaining sufficient understory space and reducing human intervention were key factors for improving and maintaining species diversity.Overall,the composition and diversity of spontaneous plants differed significantly among different habitat types,with the highest richness in natural green areas and the highest diversity in the Lijiang River section.Therefore,reducing human interference and preserving understory space are of great significance for creating near natural riverbank landscapes and enhancing ecosystem stability. |
| Key words: water system around the city spontaneous plants plant diversity Guilin City |
