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Conservation of Mass in Moving, Nondeforming Control Volume01:14

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Stormwater detention basins are essential in managing runoff during heavy rainfall, particularly in urban areas where impervious surfaces increase the risk of flooding. Understanding the conservation of mass in these systems allows engineers to optimize basin performance, balancing inflow, outflow, and water storage.
In the context of a detention basin, the conservation of mass states that the total mass of water entering the basin must equal the mass leaving the basin plus any accumulation of...
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Measuring Dissolved Methane in Aquatic Ecosystems Using An Optical Spectroscopy Gas Analyzer
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使用质量平衡方法估计河流中的内部溶解甲负载.

Kenji Tsuchiya1, Shingo Miura1, Ayato Kohzu1

  • 1Regional Environment Conservation Division, National Institute for Environmental Studies, Tsukuba, Ibaraki, Japan.

PeerJ
|October 20, 2025
PubMed
概括

本研究提出了一种简单的质量平衡方法来量化河流内部甲负载. 这种方法有助于减少河流甲排放,这对于减轻全球变暖至关重要.

科学领域:

  • 环境科学 环境科学
  • 地质化学 地质化学
  • 河流生态 河流生态

背景情况:

  • 河流甲排放有助于全球变暖.
  • 量化内部甲负载对于有效的缓解策略至关重要.
  • 目前用于测量甲流量的方法复杂且特定于地点.

研究的目的:

  • 开发和验证一种简化的质量平衡方法,用于估计河流内部的甲负载.
  • 评估这种方法对大规模河流系统评估的可行性.
  • 为减少河流甲排放提供准确的数据.

主要方法:

  • 在日本的Kokai河的选定的河流流域中采用质量平衡方法.
  • 在上游和下游采样点测量了溶解甲的度.
  • 计算了甲氧化率,大气排放流量和河床净流量.

主要成果:

  • 溶解甲的度在河流流域之间有很大的差异.
  • 甲的氧化速率在 -1.2 ± 0.8 到 66 ± 19 μmol m−2 h−1.1 之间.
  • 来自河床的溶解甲净流量在-33至160μmol m-2h-1.1之间.

结论:

关键词:
气候变化 气候变化 气候变化排放到大气中的排放.灌水是一个灌水.质量平衡的质量平衡.甲氧化过程中的甲.监控 监控 监控 监控河床是河流中的一个.

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  • 拟议的质量平衡方法是一种简单而有效的工具,用于量化内部甲负载.
  • 这种方法有助于在各种地点和环境条件下进行甲流量测量.
  • 该方法适用于大规模评估河流甲动态和缓解努力.