揭示酸盐来源:中国最大的淡水湖 (波阳湖) 的地下水和地表水之间的季节性差异:来自来源的见解:比例,动态演变和驱动力
Xihua Wang1, Zejun Liu2, Y Jun Xu3
1College of Civil Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China; Department of Earth and Environmental Sciences, University of Waterloo, ON N2L 3G1, Canada.
The Science of the total environment
|December 18, 2024
概括
波阳湖的污染是由化学肥料,土壤和肥料驱动的. 这些来源在地下水和地表水之间存在差异,影响水质管理.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 地质化学 地质化学
背景情况:
- 污染,特别是来自酸盐的污染,是一个重大的环境挑战.
- 了解大淡水湖系统中的酸盐来源对于有效的水质管理至关重要.
- 地下水和地表水中酸盐来源的季节性变化和动态演变仍然不清楚.
研究的目的:
- 调查和量化中国波阳湖地区地下水和地表水中酸盐的来源.
- 分析酸盐来源的季节性差异和动态演变.
- 评估与酸盐来源分配相关的不确定性.
主要方法:
- 从地下水和地表水中收集126个水样 (2022-2023年).
- 贝叶斯稳定同位素混合模型的应用.
- 使用绝对主要成分得分-多重线性回归,离子比系数和不确定性指数 (UI90).
主要成果:
- 人为来源,主要是化学肥料 (CF),土壤 (SN),和污水输入 (M&S),显著影响酸盐.
- 地下水中酸盐的来源:CF (16.632.4%),SN (26.038.1%),M&S (26.548.2%).这些酸盐来源于地下水.
- 地表水中酸盐的来源:CF (38.843.9%),SN (37.640.6%),M&S (12.318.6%).这些酸盐的来源包括:
- 在酸盐来源和地下水和地表水之间的比例中观察到显著的差异.
- 时间异质性,土地利用,人口密度和植被覆盖影响酸盐来源.
- 不确定性分析显示,SN (平均0.78) 和CF (平均0.64) 的不确定性最高.
结论:
- 波阳湖的酸盐来源主要是人为的,对地下水和地表水有明显的贡献.
- 有效的水质管理需要解决化学肥料,土壤和的具体贡献.
- 结果为控制类似的大淡水湖生态系统中的酸盐污染提供了关键数据.
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