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水衍生有机物主导着Poyang湖的沉积物矿化

Caixia Kang¹, Yingnan Hong¹, Zijian Zhu¹

¹School of Civil Engineering and Architecture, East China Jiaotong University, Nanchang, 330013, China.

Journal of environmental management

|September 13, 2025

概括

波扬湖的沉积物有机物显示空间变化,影响循环. 本土巨型植物衍生有机物显著影响矿化和固定率.

科学领域:

环境科学环境科学
临界技术临界技术
生物地质化学生物地质化学

背景情况:

波扬湖独特的水文结构导致沉积物有机物中的空间异质性.
了解矿化和固定的机制至关重要,但人们对其了解甚少.

研究的目的:

量化波阳湖不同区域的总矿化 (GNM),总固定化 (GAI) 和净矿化 (NNM).
确定循环过程中空间变化的驱动因素.

主要方法:

在干旱季节在湖泊,入口和泥区进行GNM,GAI和NNM的现场测量.
贝叶斯同位素混合模型用于确定有机物质来源.
多重回归和结构方程建模以确定控制因素.

主要成果:

在各区域中观察到GNM,GAI和NNM的显著空间变化.
在泥原地区,GNM和GAI的数量最高;在入口地区,NNM的数量达到峰值.
水衍生有机物是泥平面矿化的一个关键因素.
沉积物温度和DOM质量指标 (C3,C:N,a(254) 是转化率的重要驱动因素.

结论:

本土的巨型植物衍生有机物在调节波阳湖沉积物循环中发挥着中心作用.
不同的环境因素控制着不同的转化速率.
调查结果为湖泊管理提供了关于内部营养动态的见解.

关键词:

氨不移动化氨不移动化他们是土著的.巨生物的降解降解矿化的矿化有机物质的来源和组成.波扬湖 (Poyang湖) 是一个湖泊.

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