调查流放和度之间的回归关系的适用性和假设,用于负载估计
Jung-Hun Song1,2,3, Younggu Her3, Youn Shik Park4
1Institute of Green Bio Science and Technology, Seoul National University, Pyeongchang 25354, Republic of Korea.
Heliyon
|January 16, 2024
概括
回归模型准确地估计了大多数流域的营养物质负载. 然而,异种性可能会导致偏差,限制在酸盐度可变的农业地区的适用性. 均性是可靠估计营养负载的关键.
科学领域:
- 环境科学 环境科学
- 水文学的水文学
- 水的质量 水的质量
背景情况:
- 使用水排放和营养度之间的回归来估计营养负载是常见的.
- 最近的研究强调了这些回归模型的潜在偏差和有限的适用性.
- 了解选择性适用性的理论基础对于准确的水质评估至关重要.
研究的目的:
- 探索流量度回归模型用于估计营养负载的选择性适用性的理论原因.
- 调查流域特征对酸盐+酸盐负载估计准确性的影响.
- 确定影响这些估计方法可靠性的关键统计假设.
主要方法:
- 分析了由海德堡附带载荷计划 (HTLP) 监测的22个流域的每日流量和酸盐+酸盐度数据.
- 使用LOAD ESTimator (LOADEST) 软件应用回归方程.
- 检查残留异种粘度及其与负载估计准确性的关系.
主要成果:
- 回归模型在22个流域中的14个流域 (64%) 中为酸盐+酸盐负载估计提供了可接受的准确性.
- 在8个流域 (36%) 观察到高度偏差的结果,表明适用性有限.
- 残留物异性,特别是在高度可变性低流量时,导致回归模型不准确.
结论:
- 残留物均性是使用流量度回归精确酸盐+酸盐负载估计的关键假设.
- "运输能力"的概念,往往隐含在回归中,并不普遍适用,尤其是在供应有限的农业流域.
- 建议在有密集农业管理实践的地区仔细应用回归模型,以确保可靠的营养负载估计.
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