摘要
本研究选取了广州市海珠国家湿地公园的典型垛基果林湿地、城市内湖湿地、人工修复湿地、果林保育湿地4种主要湿地类型为研究对象,采用样地调查与相关性分析方法,分析了包括植被、土壤与水体的生态系统碳储量分布特征及自然影响因素,结果表明:(1)生态系统碳储量比较为:人工修复湿地(203.46 t/hm^(2))>典型垛基果林湿地(173.97 t/hm^(2))>城市内湖湿地(170.93 t/hm^(2))>果林保育湿地(136.24 t/hm^(2)),人工修复湿地的碳储量较高;(2)仅讨论表层0~20 cm的土壤与底泥情况下,植被碳储量在海珠湿地生态系统碳储量构成上具有绝对的优势,不同湿地类型的植被碳储量占比为62%~83%;(3)生态系统特征自然因素中,植被碳储量与生态系统碳储量显著相关(r=0.99,P≤0.05),其中乔木平均胸径、平均冠幅、Margalef丰富度指数与植被碳储量显著相关。海珠湿地作为一个复合生态系统的城中湿地,具有较大的固碳能力,研究结果为科学掌握与评估海珠湿地生态系统碳储量提供了数据基础。
This study selected four major wetland types in Haizhu National Wetland Park,Guangzhou,as research objects,namely,typical ridge-fruit forest wetlands,urban inner-lake wetlands,artificially restored wetlands,and fruit forest conservation wetlands.Through plot surveys and correlation analysis,the distribution characteristics of ecosystem carbon storage(including vegetation,soil,and water)and their natural influencing factors were investigated.The results revealed that:①ecosystem carbon storage followed the order:artificially restored wetlands(203.46 t/hm^(2))>typical ridge-fruit forest wetlands(173.97 t/hm^(2))>urban inner-lake wetlands(170.93 t/hm^(2))>fruit forest conservation wetlands(136.24 t/hm^(2)),indicating higher carbon storage in artificially restored wetlands;②when considering only surface soil/sediment(0~20 cm),vegetation carbon storage dominated the ecosystem carbon pool across all wetland types,accounting for 62%~83%of total storage;③among natural factors,vegetation carbon storage showed a significant positive correlation with total ecosystem carbon storage(r=0.99,P≤0.05).Key vegetation parameters,including average tree diameter at breast height(DBH),crown width,and the Margalef richness index,were significantly correlated with vegetation carbon storage.As a composite urban wetland ecosystem,Haizhu Wetland exhibits substantial carbon sequestration potential.These findings provide a critical data foundation for scientifically evaluating and managing carbon storage in urban wetland ecosystems.
作者
马超楠
陈燕明
叶田田
黄思艺
李贤基
Ma Chaonan;Chen Yanming;Ye Tiantian;Huang Siyi;Li Xianji(College of Forestry and Landscape Architecture,South China Agricultural University,Guangzhou 510642,Guangdong,China)
出处
《绿色科技》
2025年第12期1-9,共9页
Journal of Green Science and Technology
基金
国家自然科学基金项目(编号:52078222)
粤港澳大湾区多尺度城市化梯度下的鸟类谱系/功能/均质化及生境优化与多样性提升研究(编号:52478053)。
关键词
海珠湿地
湿地生态系统
碳储量
影响因素
Haizhu Wetland
wetland ecosystem
carbon storage
influencing factors
作者简介
第一作者:马超楠(1999-),女,硕士研究生,研究方向为湿地生态、城市绿地碳汇;通讯作者:陈燕明(1975-),女,副教授,硕士生导师,研究方向为风景园林可持续设计与技术、生态规划、城市低碳发展。
