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本研究以珠海市鸡啼门入海口生态修复治理后的滨海盐沼为例,通过现场采样数据,分析华南地区滨海盐沼沉积物有机碳含量、垂直分布及碳储量差异。结果表明,研究区盐沼沉积物碳汇能力为0.23Mg C·a-1·yr-1,盐沼沉积物有机碳含量随深度呈“浅层相对稳定、深层递减”趋势,盐沼沉积物1m生态系统碳储量达38.85Mg C·ha-1,较光滩提升11.3%。盐沼植被覆盖区域表现出相较相应光滩更高的生态系统碳储量,表明植被覆盖是促进沉积物碳封存的关键因子。研究结果揭示了华南地区滨海盐沼生态系统有机碳含量及碳储量的典型特征,为华南地区滨海湿地碳汇评估及退化盐沼的生态修复成效及碳汇评估提供参考。
Abstract：Taking the restored coastal salt marsh at the Jitimen Estuary in Zhuhai City as a case study,this study analyzed the differences in sediment organic carbon content,vertical distribution,and carbon storage in coastal salt marshes in South China based on field sampling data. The results showed that the carbon sequestration capacity of salt marsh sediments in the study area was 0. 23Mg C·a-1 ·yr-1. The organic carbon content of salt marsh sediments showed a trend of being relatively stable in the shallow layer and decreasing in the deeper layer with increasing depth. The 1 m ecosystem carbon storage of salt marsh sediments reached 38. 85 Mg C·ha-11,which was 11. 3% higher than that of the bare tidal flat. Overall,the vegetation-covered salt marsh area exhibited higher ecosystem carbon storage than the corresponding bare tidal flat,indicating that vegetation cover is a key factor promoting sediment carbon sequestration. The results reveal the typical characteristics of organic carbon content and carbon storage in coastal salt marsh ecosystems in South China and provide a reference for carbon sink assessment of coastal wetlands in South China,as well as for evaluating the ecological restoration effectiveness and carbon sink potential of degraded salt marshes.
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基本信息:
中图分类号:X171.1;P736.21
引用信息:
[1]郑玉萍,李鑫,卢德伟,等.华南地区滨海盐沼生态系统碳储量研究——以广东省珠海市鸡啼门入海口为例[J].黑龙江国土资源,2026,24(02):46-51.
基金信息:
广东省自然资源厅科技项目“基于盐沼、海草床滨海生态系统的碳汇核算方法学关键技术研究”(GDZRZYKI2024011); 广州市交通规划研究院有限公司科技基金项目“滨海盐沼、海草床生态系统碳汇计量与监测方法关键技术研发”(KYHT-2024-01)
2026-02-28
2026-02-28