来自牛的溶解有机物:光谱洞察力和对牛牧场洪水平原湖泊的影响
Gisela Mayora1,2, Claudia Queimaliños3
1Instituto Nacional de Limnología (INALI), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Litoral, Ciudad Universitaria s/n, Paraje El Pozo, Santa Fe City, Santa Fe, CP 3000, Argentina. gpmayora@inali.unl.edu.ar.
Environmental monitoring and assessment
|November 12, 2025
概括
广泛放牧对洪水平原和湖泊溶解有机物 (DOM) 的影响很小. 产生的DOM很可能储存在沉积物中,尽管生物指数 (BIX) 可能会追踪微妙的输入.
科学领域:
- 环境科学 环境科学
- 水生生态学 水生生态学
- 生物地质化学生物地质化学
背景情况:
- 洪水平原越来越多地被牛放牧,但对湖泊溶解有机物 (DOM) 的影响尚不清楚.
- 了解DOM动态对于洪水平原生态系统的健康和水质至关重要.
研究的目的:
- 评估牛对洪水平原湖泊DOM质量和度的影响.
- 为了评估用于检测便衍生的DOM输入的光谱变量.
主要方法:
- 使用紫外线可见光和光光谱学从牛中特征水可提取有机物 (WEOM).
- 比较了来自洪水平原湖的DOM和WEOM的光谱特性.
- 分析了牛养殖率和DOM特征之间的关系.
主要成果:
- 牛含有芳香,生物活性WEOM,处于早期分解阶段 (低HIX,中度FI,高BIX).
- 洪平湖DOM显示了比便WEOM更高的化和更低的芳香度.
- 牛养殖率没有显著改变湖泊DOM,除了积极的BIX关系. 降水和自然继承是湖泊DOM变化的主要驱动因素.
结论:
- 广泛的轮转放牧对有机丰富的洪水平原湖泊中DOM的影响微不足道.
- 由于其芳香性,来自的DOM很可能被隔离在沉积物中.
- 生物指数 (BIX) 显示了作为料输入的敏感追踪器的潜力.
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