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[不同类型湖泊的DOM光谱特征和来源的季节性变化]

Jing-Tian Gao^1,2, Shi-Ke Tang^1,2, Wen-Li Liu^1,2

¹School of Energy and Environment, Inner Mongolia University of Science and Technology, Baotou 014010, China.

Huan jing ke xue= Huanjing kexue

|April 15, 2025

概括

溶解有机物 (DOM) 度从春季到夏季在内蒙古湖泊显著增加,空间分布和来源各不相同. 水文条件,水量投入和人类的影响影响了这些季节性变化.

科学领域:

环境科学环境科学
临界技术临界技术
有机地化学有机地化学

背景情况:

溶解有机物 (DOM) 对水生生态系统至关重要,影响生物地球化学循环和水质.
了解DOM的时空动态和来源对于有效的湖泊管理至关重要.

研究的目的:

研究DOM的时空分布,特征和源头在武良苏海湖,大海湖和南海湖.
探索DOM和关键水质参数之间的关系.

主要方法:

在2023年春夏从内蒙古三个湖泊收集的水样.
使用紫外线和3D光光谱学分析DOM光谱特征和组成.
应用并行因子分析 (PARAFAC) 来确定DOM源,并行分析水质参数.

主要成果:

在所有湖泊中,溶解有机碳 (DOC) 度从春天到夏天显著增加,空间差异显著.
DOM的成分各不相同,武良水海湖呈现出更高的芳香度和疏水性.
DOM源因季节性变化而变化,主要是春季内源,夏季是外源的武良水海湖,主要是大海和南海湖内源.
在DOM和营养物质 (TN,TP),溶解氧 (DO),叶绿素-a (Chl-a) 和化学氧气需求 (COD) 之间发现了显著的相关性.

结论:

湖泊DOM的季节性变化是由水文条件,水投入,生物活动和人类影响驱动的.
营养丰富和增加的生物活性可以改变DOM特征和来源.
有效的湖泊管理策略必须考虑影响DOM动态的因素的复杂相互作用.

关键词:

3D光光谱学 3D光光谱学紫外线对紫外线的光谱.溶解有机物 (DOM) 是一种有机物.季节性变化的季节性变化.频谱特征频谱特征频谱特征

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