广西科学2026，Vol.33Issue(2)：337-346,10.DOI:10.13656/j.cnki.gxkx.20260603.012
东寨港海草床碳储量及其影响因素分析
Carbon Storage in the Seagrass Bed of Dongzhai Port and Its In-fluencing Factors
摘要
Abstract
To systematically assess the current status of seagrass bed carbon storage in Dongjiang Port,clarify the size,spatial distribution,and contribution ratio of vegetation and sediment carbon storage,and reveal the influencing characteristics of biological and environmental factors on carbon storage.This paper estimated the carbon storage and analyzed the influencing factors based on field survey data from November 2024.The re-sults showed that the total carbon storage of seagrass bed in Dongzhai Port was 8 967.45 Mg C,with the sed-iment carbon storage(8 964.06 Mg C)exhibiting the largest contribution(99.96％)and the vegetation car-bon storage(3.39 Mg C)exhibiting the lowest contribution(0.04％),which presented a"sediment-domina-ted and vegetation-assisted"pattern.The coverage and biomass of the dominant seagrass species Halophila beccarii were low,with the below-ground biomass carbon storage being significantly higher than that of the aboveground biomass carbon storage.Carbon storage exhibited significant spatial differences,showcasing the overall distribution pattern of north entrance gate(region A)＞top of the southern bay(region E)＞west-ern nearshore(region B)＞central port(region C)＞top of the southern bay(region D).Hydrodynamic strength and substrate type were core regulators.Organic carbon in the sediment mainly accumulated in the 0-35 cm layer.Correlation analysis showed that Salinity(Sal),Dissolved Oxygen(DO),Temperature(T),and Suspended Solids(SS)were positively correlated with vegetation carbon storage and growth indicators,and shoot height was highly positively correlated with Dissolved Inorganic Nitrogen(DIN),which indicated that the growth of seagrass depended on nitrogen.However,the concentrations of DIN and active phosphate(PO33--P)in the regional water body were generally high,and the long-term eutrophication still inhibited the growth and carbon accumulation of seagrass.The results of this study provide a scientific basis for the protec-tion,restoration,and blue carbon management of seagrass beds.关键词
东寨港/海草床/碳储量/贝克喜盐草/沉积物碳/水质影响/蓝碳Key words
Dongzhai Port/seagrass bed/carbon storage/Halophila beccarii/sedimentary carbon/water quali-ty impact/blue carbon分类
生物科学引用本文复制引用
王丽,赖文婷,耿晓晓,张剑,黄雪莲,林概..东寨港海草床碳储量及其影响因素分析[J].广西科学,2026,33(2):337-346,10.基金项目
海南省重点研发项目(ZDYF2024SHFZ146,ZDYF2025SHFZ037)资助. （ZDYF2024SHFZ146,ZDYF2025SHFZ037）
