生态环境学报2025，Vol.34Issue(11)：1705-1714,10.DOI:10.16258/j.cnki.1674-5906.2025.11.004
湛江市红树林植被及土壤碳密度空间分布及其驱动机制分析
Spatial Distribution and Driving Mechanisms of Vegetation and Soil Carbon Density in the Mangrove Ecosystem of Zhanjiang City
摘要
Abstract
Mangrove vegetation and soil carbon pools have a remarkable capacity to absorb and sequester large amounts of carbon,making them crucial pathways for achieving"dual carbon"goals(carbon peak and carbon neutrality).Understanding the differences between vegetation and soil carbon pools,as well as their respective key influencing factors,is essential for the effective conservation and restoration of mangrove ecosystems.However,current studies on mangrove carbon density and its main drivers tend to adopt a single-perspective approach,focusing either on vegetation or soil carbon stocks.Furthermore,it remains unclear whether landscape metrics influence mangrove carbon density,posing significant challenges in formulating conservation and restoration plans for these ecosystems.Taking the mangroves in Zhanjiang City as a case study,this study,based on in situ surveys of vegetation and soil carbon density,revealed notable interspecific differences between vegetation and soil carbon pools(Sonneratia apetala exhibited the highest vegetation carbon density but a relatively low soil carbon density)and distinct spatial distribution patterns(soil carbon pools exhibited a latitudinal gradient).Through Mantel tests and Pearson correlation analysis,we found that soil carbon density was influenced by species richness and seawater physicochemical factors,whereas vegetation carbon density was closely linked to patch integrity.In heavily fragmented protected areas,vegetation carbon density is significantly reduced.Additionally,patch connectivity and shape indices within the protected areas significantly affected mangrove species richness.This study systematically analyzed the spatial patterns of mangrove carbon density in Zhanjiang's protected areas,highlighted the impact of patch fragmentation on carbon storage and biodiversity,and recommended strengthening the protection of mangrove patches and prioritizing the planting of native species to enhance soil carbon sequestration.These findings provide scientific support for achieving the dual carbon goals.关键词
植被碳密度/土壤碳密度/景观格局指数/斑块破碎度/斑块形状指数Key words
vegetation carbon density/soil carbon density/landscape pattern index/patch fragmentation/patch shape index分类
资源环境引用本文复制引用
王宗阳,曾雪兰,祝振昌,郭芬,罗丽娟,张武英,杜青平,张远..湛江市红树林植被及土壤碳密度空间分布及其驱动机制分析[J].生态环境学报,2025,34(11):1705-1714,10.基金项目
广东省海洋经济发展(海洋六大产业)专项资金项目(粤自然资合[2023]43号) （海洋六大产业）
"珠江人才计划"引进创新创业团队项目(2021ZT090543) （2021ZT090543）
