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通过结合的酸盐同位素标记物和水地化学指纹解读人为营养物对水生生物优化的影响

Yan Chen¹, Zihan Zhao², Fan Wang²

¹Key Laboratory of Drinking Water Source Protection of the Ministry of Ecology and Environment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China; School of Geography, Nanjing Normal University, 1 Wenyuan Road, Qixia, Nanjing, 210023, China.

The Science of the total environment

|September 18, 2025

概括

过多的营养物质会导致藻类的繁殖. 这项研究使用酸盐同位素来识别高原湖中的污水和肥料等污染源,帮助恢复水生环境.

科学领域:

环境科学环境科学
地质化学地质化学
临界技术临界技术

背景情况:

过多的营养投入会引发藻类的繁殖和水生生态系统中的环氧化.
由于营养丰富,高原湖面临着严重的环境问题.

研究的目的:

通过水地化学和酸盐同位素分析,澄清高原湖中的环保水平和污染源.
为了了解营养迁移和人为影响在巨型植物占主导地位和藻类杂的湖泊地区.

主要方法:

对水地化学指纹和酸盐 (NO3-) 同位素丰度 (δ15N-NO3-和 δ18O-NO3-) 的分析.
宏观植物占主导地位的清水和藻类杂湖区的比较.
追踪营养来源,包括污水,,化学肥料和土壤N损失.

主要成果:

观察到高度的 (N), (P) 和有机物质,其中溶解的N和粒子P占主导地位.
酸盐同位素和离子比率确定了污水/便排放和化学N肥料作为主要的污染贡献者.
N和P负荷的区域变化是由土地使用和农业强度驱动的,将藻类生长限制从N转移到P.

结论:

水化学指纹和同位素是追踪人类对水质的影响的宝贵工具.
了解营养动态对于控制营养级流和恢复水生环境至关重要.
需要有针对性的管理策略来减轻农业和家庭来源的污染.

关键词:

生态效应生态效应生态效应这是一种同位素同位素.多个指标多个指标.酸盐的追踪酸盐的追踪营养物质负载是什么污染源的污染源是什么

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