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城市河流中的蓝藻细菌繁荣:水资源生态管理的资源利用效率前景

Qingyu Chai¹, Yongxin Zhang², Yuxi Zhao¹

¹Department of Management, Heilongjiang University of Science and Technology, Harbin 150022, China.

|September 27, 2025

概括

城市河流面临着蓝藻细菌的繁殖,城市资源利用效率 (RUE) 较低,增加了繁殖风险. 优化营养比例和河流流量是管理这些开花的关键.

科学领域:

环境科学环境科学
生态生态学生态生态学
临界技术临界技术

背景情况:

蓝藻细菌的繁殖在城市河流中构成全球生态威胁,河流机制尚不清楚.
资源利用效率 (RUE) 是理解浮游植物动态的一个关键指标.

研究的目的:

使用RUE调查马吉亚古河中蓝藻细菌繁殖动态.
确定影响城市与农村河流段的开花形成的时空模式和营养值.

主要方法:

从2022年至2024年,在25个农村到城市的地点进行季节性采样.
计算的RUE (每单位TN/TP的甲) 和蓝藻细菌相对丰度 (RAC).
应用了通用添加模型来分析RAC-RUE关系并确定关键值.

主要成果:

城市河流段的RAC比农村段高1.9倍,RUE比农村段低28-30%.
确定了农村 (TN-RUE 40-45,TP-RUE 25-30) 和城市 (TN-RUE 20-25,TP-RUE <10) 区域的不同RAC-RUE门.
水文停滞和脉冲营养输入减少了RUE,降低了城市环境中的开花触发值.

结论:

资源利用效率 (RUE) 有效地预测了城市河流中的蓝藻细菌繁殖风险.
管理应该专注于优化营养物质 (N/P) 的比例和恢复河流的流量,而不仅仅是减少营养物质负载.
研究结果为在环境压力下可持续的城市河流管理提供了框架.

关键词:

蓝藻细菌的花朵在开花.生态管理生态管理营养物质的临界值.资源使用效率,资源使用效率.城市河流城市河流

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