华东师范大学学报（自然科学版）Issue(3)：44-55,12.DOI:10.3969/j.issn.1000-5641.2026.03.004
黄河口、长江口及其邻近海域水体荧光溶解有机物特征与来源解析
Characteristics and associated sources of fluorescent dissolved organic matter in the Yellow River Estuary,the Changjiang River Estuary and their adjacent seas
摘要
Abstract
Fluorescent dissolved organic matter(FDOM)indices,sources,and their relationships with nutrients in the Yellow River Estuary,the Changjiang River Estuary and their adjacent seas in July 2024 were investigated through field sampling and laboratory analysis.The fluorescence index ranged from 2.71 to 4.45 in the Yellow River Estuary and its adjacent sea and from 3.22 to 5.69 in the Changjiang River Estuary and its adjacent sea.The biological index values were 1.75～3.48 and 1.49～4.81,respectively,indicating that autochthonous sources contributed most to the organic matter.The humification index of the Yellow River Estuary,the Changjiang River Estuary and their adjacent seas ranged from 0.22 to 0.85 and 0.10 to 1.14,respectively,suggesting weak humification and strong autogenic processes.Spatially,the fluorescence index and biological index increased while the humification index decreased toward the sea,indicating that organic matter is primarily driven by autochthonous production with minimal humification.The FDOM and fluorescence index were significantly higher in the Changjiang River Estuary than in the Yellow River Estuary,suggesting greater concentrations of organic matter and more substantial autochthonous sources in the Changjiang River Estuary and its adjacent sea.The fluorescence index and biological index were significantly negatively correlated with nutrient concentrations,while the humification index was positively correlated with nutrients.These results indicate that nutrient inputs significantly influence FDOM,further altering the organic matter composition and water quality in estuaries.关键词
荧光溶解有机物/营养盐/黄河口/长江口Key words
fluorescent dissolved organic matter(FDOM)/nutrients/Yellow River Estuary/Changjiang River Estuary分类
资源环境引用本文复制引用
林秋汛,吴博双,杜光月,付宇轩,潘一凡,漆梦婷,宋振阳,周永强,李小飞..黄河口、长江口及其邻近海域水体荧光溶解有机物特征与来源解析[J].华东师范大学学报（自然科学版）,2026,(3):44-55,12.基金项目
国家重点研发计划(2023YFC3208404) （2023YFC3208404）
国家自然科学基金(42422604) （42422604）
