在间歇性河流中模拟农药和生态毒理风险评估,使用SWAT
Marco Centanni1, Giovanni Francesco Ricci2, Anna Maria De Girolamo3
1Department of Soil, Plant and Food Sciences, University of Bari Aldo Moro, Bari, Italy.
Scientific reports
|March 17, 2024
概括
这项研究评估了地中海河流中的农药风险,发现草甘和铜超过了安全限值. 生态水文模型预测了高水平的农药,对水生生态系统构成风险.
科学领域:
- 环境科学 环境科学
- 生态毒理学 生态毒理学
- 水文学的水文学
背景情况:
- 铜 (Cu) 和草甘等农药在农业中被广泛使用.
- 地中海河流盆地由于间歇性流量而面临着独特的挑战.
- 评估农药命运和生态毒理风险对于水资源管理至关重要.
研究的目的:
- 预测地中海间歇性河流中铜和草甘的环境命运.
- 评估这些农药在地表水中的生态毒理风险.
- 为全面的风险评估,将现场测量与生态水文建模结合起来.
主要方法:
- 使用土壤和水资源评估工具 (SWAT) 模型,与现场数据进行校准.
- 综合流量和农药度测量.
- 应用了毒性与暴露比率 (TER) 方法来评估在达到尺度上的生态毒理风险.
主要成果:
- 草甘度超过了欧洲环境质量标准 (EQS).
- 在雨季和9月期间预测高水平的草甘;检测到急性风险.
- 预计铜度升高,11月和1月会出现慢性风险.
结论:
- 农药污染,特别是草甘和铜,在地中海间歇性河流中构成重大生态毒理风险.
- 该研究强调了在农药使用和流失的关键时期需要有针对性的管理策略.
- 综合建模和监测方法对于评估和管理复杂河流系统中的水质是有效的.
相关概念视频
01:17Design Example: Analyzing Capacity Contours for Flood Risk Assessment
46
Flood risk assessment involves careful planning and analysis to ensure the safety of communities near water retention structures. Capacity contours are a vital tool in this process, as they illustrate the potential spread of water at specific levels in a given area. In the context of building a bund across a small valley, these contours play a critical role in evaluating the safety of nearby residential areas.In this example, the bund is intended to store stormwater in the valley. The engineers...
46
01:30Typical Model Studies
359
Fluid mechanics model studies often utilize scaled-down systems to predict fluid behavior in full-scale environments, such as river flows, dam spillways, and structures interacting with open surfaces. Maintaining Froude number similarity in river models is crucial, as it replicates surface flow features like wave patterns and velocities.
359