根据集群:特征,演变和政策影响,评估过去十年珍珠河的水质
Jiang Wu1, Shu-Peng Cheng2, Ling-Yan He1
1Key Laboratory for Urban Habitat Environmental Science and Technology, Peking University Shenzhen Graduate School, Shenzhen 518055, China.
Water research
|August 20, 2023
概括
中国的珍珠河水质正在下降. 这项研究分析了2009-2019年的水资源数据,发现社会经济因素显著影响水质,需要有针对性的治理才能恢复.
科学领域:
- 环境科学 环境科学
- 水资源管理 水资源管理
- 河流生态 河流生态
背景情况:
- 珍珠河 (PR) 对供水至关重要,但由于快速发展和人类活动,其质量正在恶化.
- 像BOD5,TP和NH3N这样的关键水质变量是河流健康的关键指标.
- 了解空间和时间变化对于有效的水资源管理至关重要.
研究的目的:
- 从2009年到2019年,分析珍珠河流域八个水质变量的特征和演变.
- 确定影响水质的因素,并评估修复工作的有效性.
- 为区域化水质管理战略提供见解.
主要方法:
- 在16个站点每月监测8个水质参数 (pH,WT,DO,BOD5,PI,TP,NH3N,F).
- 统计分析包括集群,水质指数 (WQI) 计算,全子集线性回归和通用添加模型 (GAM).
- 在深河口的WQImin组件的进化分析.
主要成果:
- 年平均BOD5和F-达到I类标准;TP和NH3N达到较低的标准.
- 集群分析揭示了不同的参数分组,季节性变化 (湿/干),以及水质状态 (受污染,修复,细).
- 社会经济因素解释了70%以上的水质变化,而自然因素解释了37.2%-61.3%.
结论:
- 社会经济驱动因素是对珍珠河水质恶化的主要影响因素.
- 有针对性的,政府支持的整治工作可以加速水质的恢复,如在深所见.
- 实施严格,一致和针对区域的管理策略对于保持水质至关重要.
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