在未监测的流域中评估最佳管理实践的影响,使用合SWAT-BiLSTM方法
Xianqi Zhang1,2,3, Yu Qi4, Haiyang Li1
1Water Conservancy College, North China University of Water Resources and Electric Power, Zhengzhou, 450046, China.
Scientific reports
|October 11, 2023
概括
这项研究开发了一种混合土壤和水评估工具 (SWAT) 和双向长期短期记忆 (Bi-LSTM) 模型,以模拟未监测的流域的最佳管理实践 (BMP),改进流量预测和水质评估.
科学领域:
- 环境水文学环境水文学
- 水资源管理 水资源管理
- 计算建模 计算建模
背景情况:
- 准确模拟最佳管理实践 (BMP) 对未经监测的流域至关重要.
- 现有的水文模型通常需要大量的数据,这限制了它们在数据稀缺的地区的应用.
- 改善流量预测对于有效的水质管理至关重要.
研究的目的:
- 开发和评估一种混合水文模型,将土壤和水评估工具 (SWAT) 和双向长期短期记忆 (Bi-LSTM) 结合起来,用于模拟BMP效应.
- 通过使用非常高分辨率的土地利用和土地覆盖 (LULC) 数据,提高巴河流域 (BRB) 流量预测的准确性.
- 评估各种BMPs在减少营养负载 (TN和TP) 的有效性.
主要方法:
- 整合了基于物理的SWAT模型与数据驱动的Bi-LSTM模型.
- 使用了SinoLC-1非常高分辨率的土地利用和土地覆盖 (LULC) 数据集.
- 校准SWAT参数以优化Bi-LSTM模型的输入数据,增强其学习过程.
主要成果:
- 混合SWAT-BiLSTM模型表现出高流量预测准确度,总体纳什-萨特克利夫效率 (NSE) 为0.86和R2为0.85.
- 模拟表明,草是最有效的单一BMP减少营养 (17.83%TN,36.17%TP).
- 结合草,土壤测试和施肥以及植物性过条,实现了最高的营养减少 (42.71% TN,50.40% TP).
结论:
- 混合SWAT-BiLSTM模型提供了一种新且有效的方法,用于模拟缺乏水文数据的流域中的BMP影响.
- 该模型为水质模拟和决策提供了可靠的水力动力环境.
- 这种方法在与BMP相关的水资源管理和规划中具有广泛应用的巨大潜力.
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