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在沉积物中提高营养控制效率,使用修改的粘土无活化,再加上水生植被,在一个安trophic湖的汇合区
Li Huo1, Pan Yang1, Hongbin Yin2
1State Key Laboratory of Lake Science and Environment, Nanjing Institute of Geography and Limnology, Chinese Academy of Sciences, 73 East Beijing Road, Nanjing 210008, People's Republic of China; University of Chinese Academy of Sciences, 19 Yuquan Road, Beijing 100049, People's Republic of China.
The Science of the total environment
|October 28, 2023
概括
控制沉积物中营养物质的释放是湖泊恢复的关键. 将改性粘土与水生植物相结合,为减少孔水中和提供了最有效的长期解决方案.
科学领域:
- 环境科学 环境科学
- 水的化学 水的化学
- 生态恢复 生态恢复
背景情况:
- 沉积物释放的营养物质 (和) 是湖泊恢复的主要障碍.
- 开发有效的长期方法来控制内部营养负载至关重要.
研究的目的:
- 评估改性粘土,改性地和水生植被 (Vallisneria spiralis) 在控制沉积物中营养物质释放方面的有效性.
- 确定长期沉积物修复方法的最有效组合.
主要方法:
- 作为营养吸收剂,用改性粘土 (ACLA) 和改性焦石在现场应用.
- 在实验性沉积物设置中种植Vallisneria spiralis (V. spiralis).
- 对孔水营养度和流量在沉积物-水界面上的分析.
主要成果:
- 与对照组相比,所有测试方法 (吸收剂,V. spiralis) 都减少了孔水的营养和流量.
- 修改后的粘土和V. spiralis的组合显示出营养含量和流量的优越降低.
- 营养吸附剂单独没有提供长期的控制;单独的V. spiralis是最不有效的.
结论:
- 化学 (改性粘土) 和生态 (水生植被) 的结合方法是长期修复污染的湖泊沉积物的最有效策略.
- 粘土的吸附能力和植被的树根球氧化之间的协同作用增强了营养控制.
- 综合方法对于通过解决内部营养物质负载来实现可持续的湖泊恢复至关重要.
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