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废水负载对恢复湿地的吸收能力的多十年影响

Chenxi Mi¹, Cynthia Soued², Lauren E Bortolotti³

¹Department of Biological Sciences, University of Lethbridge, Lethbridge, AB, T1K 3M4, Canada; College of Water Conservancy, Shenyang Agricultural University, Shenyang, China.

Environmental research

|October 31, 2024

概括

湿地沉积物 (P) 保留能力在几十年内可能在废水入口附近耗尽,但在其他地方仍然很高. 这项研究为管理流域的湿地P循环提供了关键的长期见解.

科学领域:

环境科学环境科学
地质化学地质化学
生态生态学生态生态学

背景情况:

自然湿地对处理富含 (P) 的水具有成本效益.
废水加载对湿地P保留的长期影响尚不清楚.

研究的目的:

为了研究沉积物P吸收的时空进化超过25年的连续废水加载在恢复的加拿大湿地.
评估沉积物地质化学如何影响在持续的废水输入下P保留能力.

主要方法:

沉积物P吸附实验在弗兰克湖的三个盆地进行.
对沉积物 (Ca,Fe,Mn) 进行了地球化学分析.
数据与大约25年前的一项类似研究进行了比较.

主要成果:

观察到P吸附能力的空间变化,与沉积物的地化学梯度有关.
在废水入口附近,P吸收能力已经耗尽,但在其他地区仍然很高.
弗兰克湖与其他生态系统相比,通过沉积物吸收保持P的总体容量很高.

结论:

持续的废水负载可能导致湿地P吸附能力的局部耗尽.
湿地可以在多个十年的时间范围内保持显著的P保留,受沉积物特性的影响.
结果提供了关于人类影响的水域的湿地P动态的长期关键数据.

关键词:

水文连接性水文连接性市政废水是城市的废水.酸吸附是一种酸吸附方法.整治整治整治整治恢复的湿地恢复了湿地沉积物地质化学沉积物地质化学

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相关概念视频

The Phosphorus Cycle

The Phosphorus Cycle

Unlike carbon, water, and nitrogen, phosphorus is not present in the atmosphere as a gas. Instead, most phosphorus in the ecosystem exists as compounds, such as phosphate ions (PO43-), found in soil, water, sediment and rocks. Phosphorus is often a limiting nutrient (i.e., in short supply). Consequently, phosphorus is added to most agricultural fertilizers, which can cause environmental problems related to runoff in aquatic ecosystems.

Bioremediation

Bioremediation

Bioremediation is the use of prokaryotes, fungi, or plants to remove pollutants from the environment. This process has been used to remove harmful toxins in groundwater as a byproduct of agricultural run-off and also to clean up oil spills.