基于流量-生态健康指数关系模型的河口环境流量评估:在中国长江河口的案例研究
Weizheng Huang1, Lai Wei1, Ya Yang1
1Key Laboratory of Yangtze River Water Environment of the Ministry of Education, College of Environmental Science and Engineering, Tongji University, Shanghai, 200092, China.
Environmental monitoring and assessment
|March 6, 2024
概括
环境流 (e-flow) 评估可以改善长江河口 (YRE) 的健康. 该研究建立了流动生态健康指数 (EHI) 模型,定义了适合生态系统恢复和可持续发展的流量范围.
科学领域:
- 河流和河口生态学
- 环境流量评估环境流量评估
- 生态系统健康管理 生态系统健康管理
背景情况:
- 环境流 (e-flow) 对河流和河口生态系统的健康至关重要.
- 长江河口 (YRE) 需要有针对性的流量调节以实现生态恢复.
- 在极端干旱场景中,现有的模型可能受到限制.
研究的目的:
- 使用流量-生态健康指数 (EHI) 关系模型对长江河口 (YRE) 进行电子流量评估.
- 建立一个合适和最佳的流量范围,以改善YRE生态系统的健康.
- 开发一个适应性管理框架,用于河口电流评估.
主要方法:
- 利用了几十年来水文,生物学和水环境的监测数据.
- 开发了一个使用累积频率分布曲线和国家标准的EHI系统.
- 采用了通用的添加模型和蒙特卡洛随机抽样用于流量-EHI关系模型.
主要成果:
- 确定了1.05-1.35的适当比例流量范围和1.15-1.25 (达通站) 的最佳范围.
- 确定夏季 (42,63065,545 m3/s) 和1月 (>14,675 m3/s) 适合YRE的特定流量要求.
- 设计了一个适应性管理框架,以解决极端干旱期间的模型限制.
结论:
- 该研究为基于生态健康的河口电流评估提供了强大的方法和框架.
- 结果为YRE的可持续发展提供了有价值的数据和管理支持.
- 这种方法可以激发对大陆和全球范围内电子流量评估的进一步研究.
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