植物生态学报 ›› 2025, Vol. 49 ›› Issue (11): 1833-1843.DOI: 10.17521/cjpe.2024.0323  cstr: 32100.14.cjpe.2024.0323

• 研究论文 • 上一篇    下一篇

深圳湾福田红树林自然保护区物种共存特征与物种分布概率

郭欢敏, 沈小雪, 李瑞利*()   

  1. 北京大学深圳研究生院环境与能源学院, 广东省红树林工程技术研究中心, 广东深圳 518055
  • 收稿日期:2024-09-23 接受日期:2025-01-27 出版日期:2025-11-20 发布日期:2025-11-20
  • 通讯作者: *李瑞利(liruili@pkusz.edu.cn)
  • 基金资助:
    深圳市可持续发展专项(KCXFZ20211020165000001);国家自然科学基金(42201361);广东省普通高校创新团队项目(2023KCXTD050)

Species co-occurrence and distribution probability in Futian Mangrove Nature Reserve of Shenzhen Bay

GUO Huan-Min, SHEN Xiao-Xue, LI Rui-Li*()   

  1. School of Environment and Energy, Peking University Shenzhen Graduate School, and Guangdong Mangrove Engineering Technology Research Center, Shenzhen, Guangdong 518055, China
  • Received:2024-09-23 Accepted:2025-01-27 Online:2025-11-20 Published:2025-11-20
  • Supported by:
    Shenzhen Sustainable Development Special Project(KCXFZ20211020165000001);National Natural Science Foundation of China(42201361);Guangdong Innovation Team Project for Colleges and Universities(2023KCXTD050)

摘要:

深圳湾福田红树林自然保护区是我国唯一一处位于城市腹地的国家级自然保护区。受人为干扰较重的城市红树林湿地的潜在物种多样性的研究, 可为红树林生态湿地可持续管理提供路径。该研究对深圳湾福田红树林自然保护区不同区域(核心区/非核心区)进行生态学调查, 采用超几何法评估物种共存特征与物种分布概率, 并基于调查数据分析该区域的植被特征。主要结果有: (1)深圳湾福田红树林自然保护区现分布主要有9种红树植物, 秋茄树(Kandelia obovata)是优势种; 核心区中秋茄树重要值较大(平均81.2%), 在非核心区, 秋茄树重要值显著降低, 并出现了无瓣海桑(Sonneratia apetala)与海桑(S. caseolaris)。(2)海桑与无瓣海桑存在强的共存倾向, z分数值为2.82, 而无瓣海桑与秋茄树存在竞争排斥, z分数值为-2.41, z分数值反映了物种实际分布与随机预期的偏离程度。(3)现存物种多样性与群落完整性之间具有显著正相关关系, 群落完整性越高, 则现存物种多样性越丰富。非核心区部分样方的无瓣海桑分布概率较高, 面临扩散风险。核心区秋茄树的分布概率(0.51 ± 0.09)显著高于非核心区(0.41 ± 0.15), 但核心区部分样方(如8号样带的样方)群落完整性较低, 建议适当补种本土红树, 提高物种多样性。

关键词: 红树林, 物种共存, 物种库分布概率, 潜在物种多样性

Abstract:

Aims The Shenzhen Bay Mangrove Nature Reserve is the only national nature reserve in China located within an urban area. Studying the potential biodiversity of urban mangrove wetlands, which are significantly impacted by human disturbance, can provide a pathway for the sustainable management of mangrove ecosystems.

Methods This study conducted an ecological survey of different areas (core/non-core) in the Shenzhen Bay Mangrove National Nature Reserve. Species co-occurrence and distribution probability was assessed using the hypergeometric method, and the vegetation characteristics of the area were analyzed based on the survey data.

Important findings (1) A total of nine mangrove species were mainly distributed in the Shenzhen Bay Mangrove Nature Reserve, with Kandelia obovata being the dominant species. In the core area, K. obovata had the highest importance value (IV) (mean = 81.2%), while its importance value in the non-core area was significantly lower, where Sonneratia apetala and S. caseolaris appeared. (2) In the Shenzhen Bay mangrove ecosystem, S. caseolaris and S. apetala exhibited a strong coexistence tendency, with a z-score value of 2.82. Meanwhile, S. apetalaand K. obovata displayed competitive exclusion, with a z-score value of -2.41. z-score values reflect non-random species co-occurrence patterns. (3) A significant positive correlation was found between the observed species diversity and the community completeness index in the Shenzhen Bay mangroves. The higher the community completeness, the higher the observed species diversity. Some non-core area plots are at risk of S. apetala spreading, and ecosystem management and protection should be strengthened. The distribution probability of K. obovata in the core area (0.51 ± 0.09) is significantly higher than that in the non-core area (0.41 ± 0.15). However, in certain plots of the core area, such as the plots in the mid-tide zones of transects 8, community completeness is relatively low. It is recommended to appropriately replant native mangroves to enhance species diversity.

Key words: mangrove, species co-occurrence, distribution probability, potential biodiversity