热带岛礁珊瑚砂海滩植被修复对土壤细菌和真核生物群落演替的影响

doi:10.11978/2025167

Abstract

Abstract:

Many coral islands in the Nansha Islands lack native vegetation. To build stable coral sand beaches, mangrove planting has been implemented as a restoration strategy. However, there is currently a lack of research on the succession of soil biological community structure during the vegetation restoration process. In this study, high-throughput sequencing was used to track changes in bacterial and eukaryotic communities in coral sand over the first year after mangrove establishment. The results showed that the dominant bacterial phyla were Cyanobacteria, Proteobacteria, Bacteroidetes, Acidobacteria and Chloroflexi, and numerous potentially novel bacterial species were detected. The dominant eukaryotic groups were Ciliophora, Nematoda, Stramenopiles, Bacillariophyta, and Rhizaria. Principal coordinate analysis (PCoA) and analysis of similarities (ANOSIM) showed that planting significantly altered both bacterial and eukaryotic community structures, with the shift in eukaryotes being more pronounced. The Shannon diversity index of bacteria increased markedly over time, whereas that of eukaryotes declined one year after planting. Co-occurrence network analysis revealed increasingly complex, predominantly positive, biotic interactions as restoration proceeded.

Key words: coral sand beach, mangrove plants, bacteria, eukaryotes, community structure, co-occurrence network

CLC Number:

P735.124

WU Peng, YANG Xiyue, LI Chunhou, XIAO Yayuan, ZHOU Weiwen, CHENG Hao, CUI Lei, YIN Jianping, LIU Yong. Effects of vegetation restoration on the succession of bacterial and eukaryotic communities in coral sand beaches on tropical islands[J].Journal of Tropical Oceanography, 2026, 45(5): 199-208.

Figures/Tables 6

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拓扑属性	细菌				真核生物
拓扑属性	T0	T1	T2	T3	T0	T1	T2	T3
总结点数	1326	2487	2363	2601	729	998	1185	1347
总边数	8044	101197	97715	191572	1963	9713	18080	10421
正相关边比例/%	86.3	90.7	91.4	72.4	91.2	71.9	89.6	94.1

Effects of vegetation restoration on the succession of bacterial and eukaryotic communities in coral sand beaches on tropical islands

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