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| 广西山口红树林保护区红树种群数量动态分析 |
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宁秋云1, 黄中坚1, 赖廷和1, 何斌源1, 马日宇1, 张桂顺1, 龙云宇1, 韦兆富1, 林金兰1, 李英花1, 莫珍妮1, 朱婷1, 秦旭东2
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| (1.广西壮族自治区海洋研究院;2.广西山口红树林生态国家级自然保护区管理中心) |
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| 摘要: |
| 为了了解广西山口红树林生态国家级自然保护区(以下简称“山口保护区”)红树种群生存现状,于2021年8-9月设置17个10 m×10 m样方开展红树群落野外调查,分析山口保护区红树种群数量动态变化特征。结果显示,研究区内共有秋茄(Kandelia obovata)95株、桐花树(Aegiceras corniculatum)977株、白骨壤(Avicennia marina)119株、木榄(Bruguiera gymnorrhiza)123株和红海榄(Rhizophora stylosa)134株,该5种红树种群的种群更新层数量较匮乏。桐花树种群的存活曲线属于Deevey-Ⅰ型,秋茄种群、白骨壤种群、木榄种群和红海榄种群的存活曲线介于Deevey-Ⅰ型和Deevey-Ⅱ型之间,5种红树种群均为稳中有降型。5种红树种群均容易受到环境的影响,对外界干扰敏感程度较高,桐花树种群对外界的抗干扰能力相较最强,木榄种群更易受外界干扰。秋茄种群、木榄种群和红海榄种群在大龄阶段进入衰退期,桐花树种群和白骨壤种群在中龄阶段进入衰退期。在经过未来2、4、6个龄级时间预测后,5种红树种群整体在未来有一定的更新能力,桐花树种群补充能力优于其他红树种群。红树种群数量动态分析可为布设红树林生态系统碳储量调查断面提供理论依据。建议加强对山口保护区红树群落的抚育管理,确保红树林群落整体稳定性。 |
| 关键词: 红树种群 静态生命表 种群数量动态 生存函数 时间序列 广西山口红树林生态国家级自然保护区 |
| DOI： |
| 投稿时间：2024-08-19修订日期：2024-10-21 |
| 基金项目:国家自然科学基金（42366009），防城港核电厂红树林生态项目（4600021727）和广西重点研发计划（2022AB20070） |
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| Quantitative dynamics of Mangrove populations inShankou Mangrove Reserve, Guangxi |
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NING Qiuyun1, HUANG Zhongjian1, LAI Tinghe1, HE Binyuan1, MA Riyu1, ZHANG Guishun1, LONG Yunyu1, WEI Zhaofu1, LIN Jinlan1, LI Yinghua1, MO Zhenni1, ZHU Ting1, QIN XUDONG2
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| (1.Guangxi Academy of Oceanography,Guangxi Marine Testing Center,Ministry of Natural Resources of China,Guangxi Marine Disaster Emergency Center;2.Shankou National Mangrove Ecosystem Nature Reserve Administration) |
| Abstract: |
| In order to understand the current state of mangrove populations to living environment in Shankou Mangrove Ecological National Nature Reserve, Guangxi (hereinafter referred to as the “Shankou Reserve”), the mangrove populations in 17 plots of Shankou Reserve were investigated in August 2021 to September 2021. We analyzed population structure and dynamics of mangrove populations. The evaluation results showed that there were 95 Kandelia obovata, 977 Aegiceras corniculatum, 119 Avicennia marina, 123 Bruguiera gymnorrhiza and 134 Rhizophora stylosa in research area, with small number of update layers. The population approximately of Aegiceras corniculatum belonged to the Deevey-I type, and other 4 mangrove populations between the Deevey-I type and Deevey-Ⅱ type. Both 5 mangrove populations grew stably at present stage. 5 mangrove populations indicated a favorable environment for their growth and development. The turning point of the population decline period of Kandelia obovate, Bruguiera gymnorrhiza and Rhizophora stylosa were at old-age class. The turning point of the population decline period of Aegiceras corniculatum and Avicennia marina were at middle-age class. According to the time sequence model, the future recruitment of old-aged individuals in the two mangrove populations is expected to occur in the age-classes of 2, 4, and 6. Therefore,the paper concludes that the dynamic analysis of mangrove population can provide theoretical basis for the establishment of carbon storage survey sections in mangrove ecosystems. The seedling raising should be strengthened to increase the survival rate of the seedlings, and ensure mangrove populations maintain stability. |
| Key words: mangrove population life table population quantitative dynamics survival function time sequence Shankou Mangrove Ecological National Nature Reserve, Guangxi |
