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解读由大型源供应的农业流域的下水-沉积物-营养物动态河流:多层次分析

Xihua Wang¹, Xuming Ji², Y Jun Xu³

¹College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Department of Earth and Environmental Sciences, University of Waterloo, ON N2L 3G1, Canada.

Journal of contaminant hydrology

|December 5, 2025

概括

农业的流域管理是复杂的,流量稳定,但沉积物负载显著减少. 水文基础设施改变了营养物质的运输,需要适应性水质管理策略.

科学领域:

环境科学环境科学
水文学的水文学
农业科学农业科学

背景情况:

排水-沉积物-营养连续性对于农业的可持续性和水资源的完整性至关重要.
在密集管理的农业水域中,这些过程的时空动态尚不清楚.

研究的目的:

研究流水-沉积物-营养连续体的合机制和歇斯底里反应.
分析人类干扰对农业流域这些动态的影响.

主要方法:

利用了2007-2022年多个来源的每日监测数据.
采用了变化模式分析,变化点检测和规模敏感的相关性分析.
综合空间营养分析,检查了降水,流水,沉积物和营养之间的关系.

主要成果:

由于水库调节和降水均化,流水没有显著的长期趋势.
沉积物负载减少了74%,在沉积物动态和降水之间观察到5年的滞后.
营养物质度在空间上有所变化,下游总 (TN) 呈现显著波动.

结论:

农业和水利基础设施显著重构材料转移动态.
这些发现为适应性水营养管理和监管农业流域的沉积物控制提供了指导.

关键词:

农业流域的水分区.甘河的流域是甘河的流域.水生态动力学水生态动力学空间时间异质性空间时间异质性水 - 营养物质管理

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