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[an error occurred while processing this directive]渤海区无居民海岛植物物种丰富度分布格局
收稿日期: 2021-06-03
录用日期: 2021-12-14
网络出版日期: 2022-04-20
基金资助
福建省科技计划(2018Y0060);福建省海洋生态保护与修复重点实验室(EPR2020008);福建省科技计划项目(2018Y3006)
Distribution pattern of plant species richness of uninhabited islands in the Bohai Sea area
Received date: 2021-06-03
Accepted date: 2021-12-14
Online published: 2022-04-20
为了解渤海区小型无居民海岛植物物种丰富度的分布格局, 本研究以渤海区9个无居民海岛为研究对象, 基于种-面积关系和种-多度对数正态分布模型探究了无居民海岛植物的物种丰富度分布格局。结果表明: (1)位于温带地区的无居民海岛木本植物相对多度符合对数正态分布特征, 表明海岛木本植物群落中多度较大的物种数较少, 而多度较小的物种甚至是稀有种或罕见种较多; (2)渤海区多数无居民海岛物种数介于60-130之间, 表明总体丰富度较高; (3)通过分析海岛与周边保护区的空间关系发现, 物种丰富度高的海岛基本位于保护区内, 总体上渤海区海岛植物热点区得到了有效保护。综上所述, 种-多度分布模型和种-面积关系均是揭示海岛植物物种丰富度分布的重要手段, 同时可初步推断, 生态位理论对海岛植物物种多样性的维持显得更为重要。
肖兰 , 董标 , 张琳婷 , 邓传远 , 李霞 , 刘建辉 , 吴端聪 . 渤海区无居民海岛植物物种丰富度分布格局[J]. 生物多样性, 2022 , 30(4) : 21231 . DOI: 10.17520/biods.2021231
Aim: Our purpose is to investigate the distribution pattern and its characteristics of plant species richness in uninhabited isles in the Bohai Sea area.
Methods: We collected quadrat and precipitation data from nine uninhabited isles. Combining species-area relationship and the species-abundance model (logarithmic normal distribution model), we explored the distribution pattern of plant species richness in uninhabited isles.
Results: Our results revealed that: (1) The relative abundance distribution of woody plants on uninhabited isles located in temperate regions displayed the logarithmic normal distribution characteristics. Common species with a larger number of individuals of woody plant communities were less numerous, while rare species with smaller individuals were more common. (2) The number of species on most uninhabited isles was between 60 and 130 in the Bohai Sea, that showed relatively high species richness. (3) Combined with the geographic location analysis of the isles, it was found that the isles with high species richness were largely located in the reserve, suggesting that plant hotspots in the Bohai Sea area were effectively protected.
Conclusion: Both the species abundance distribution model and the species-area relationship model are important tools to reveal the species richness distribution on isles. Our results suggest that the ecological niche theory is more important for maintaining the process of species diversity on the Bohai Sea area.
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