改变水流路径以增强低地地区的营养储存
Jing Zhang1, Jiacong Huang2, Yulai Ji1
1State Key Laboratory of Lake and Watershed Science for Water Security, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, Nanjing 211135, China; University of Chinese Academy of Sciences, Beijing 100049, China.
Water research
|September 2, 2025
概括
使用水力调节改变人工流域的水流提供了一种低成本的方法来减少进入湖泊的和. 这种策略增强了营养的保留,特别是在较小的水体.
科学领域:
- 环境科学
- 水资源管理
- 欧化研究
背景情况:
- 由于 (N) 和 (P) 的污染,需要有效的减排策略.
- 目前的N&P减少方法往往需要通过减少使用或广泛的生态恢复而带来高成本.
- 低成本的替代品对于水生生态系统中可持续的环保化管理至关重要.
研究的目的:
- 研究一种低成本的策略,以提高人造流域的和保留率.
- 评估液压调节在改变水流路径以减少营养的有效性.
- 在不同流动场景下,量化太湖流域的N&P流量和保持量.
主要方法:
- 土壤和水评估工具,低地波尔德和动态模型的合,以及水文工程中心-河流分析系统.
- 模拟和动力学在各种波尔德液压调节场景下.
- 基于水流通路径,聚树密度和靠近河流的N&P保留能力的分析.
主要成果:
- 河流和小溪的总和 (TN和TP) 保持能力高于河流.
- 波尔德的液压调节将TN和TP流入湖泊减少了8%以上.
- 特定的湖泊保留率有所不同,大湖和葛湖的容量比太湖高 (15.1%和11.2%).
- N & P 保持与聚合物密度正相关,与聚合物-河流距离负相关,特别是在夏季降雨期间.
结论:
- 波尔德液压调节是一个低成本,有效的提高和的策略.
- 通过液压调节改变水流路径是缓解肥胖的可行方法.
- 这种可转移的解决方案可以为其他面临类似营养污染挑战的低地地区提供人工排水系统.
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