在农业河流中,和的去除与洪水平原的修复之间的权衡
Lukas Hallberg1, Sara Hallin2, Faruk Djodjic3
1Department of Soil and Environment, Swedish University of Agricultural Sciences, Uppsala, Sweden.
Water research
|May 23, 2024
概括
洪水平原的恢复有助于去除,但可以释放. 为了使农业流水质量保持平衡,要平衡脱的洪水和的风险,这是农业流水质量的关键.
科学领域:
- 环境科学 环境科学
- 生态系统恢复 恢复生态系统
- 水质管理水质管理
背景情况:
- 农业流域的洪水平原修复通过生物地球化学和河流过程提供生态系统服务.
- 洪水可以增强的去除,但有的动员风险,可能阻碍水质的改善.
研究的目的:
- 调查修复的农业流中的和加工能力.
- 评估洪水平原对水质的影响,重点关注脱和动态.
主要方法:
- 在瑞典十个水域的洪水平原和溪流沉积物中测量了潜在的脱,氧化生产和 (P) 脱.
- 利用乙抑制用于脱率和P异热化用于平衡P度.
- 结合营养过程速度与水化监测在修复和控制流达到.
主要成果:
- 在脱率和可溶性反应 (SRP) 脱 (r = 0.53,p = 0.02) 之间观察到一个权衡,受溪流-泛洪平原连接的影响.
- 洪水平原的SRP释放量明显低于梯形溪岸的SRP释放量,受洪水频率和溪流SRP的影响.
- 虽然洪水平原SRP释放的总体影响有限,但经常被不稳定P和粗土壤淹没的流域显示SRP流量增加.
结论:
- 建造的洪水平原可以通过促进脱改善水质,但需要谨慎管理,以减轻释放风险.
- 增加的洪水以消除和潜在的动员的平衡至关重要,特别是在高输入的河流中.
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