Recent Marine Water Quality Data
收藏空间数据共享平台2026-05-11 更新2025-05-31 收录
下载链接：
https://portal.csdi.gov.hk/geoportal/?datasetId=epd_rcd_1630908628415_41776#metadataInfoPanel
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资源简介：
Dissolved Oxygen (DO) and 5-day Biochemical Oxygen Demand (BOD5) are two important parameters indicating the general conditions of the water.
Dissolved Oxygen indicates the total amount of oxygen dissolved in the water. Most marine organisms need oxygen for respiration and maintenance of life. Dissolved oxygen content in water can also be affected by natural factors including weather, temperature, water turbulence, hydrological conditions, algal blooms, etc. Lower DO levels may occasionally occur due to natural water column stratification phenomenon.
BOD5 measures the amount of oxygen consumed by microorganisms in decomposing organic matters in water. It is generally used to reflect the level of organic pollution of environmental water.
The recent DO and BOD5 at selected stations in 10 Water Control Zones are available on this web page.
提供机构：
Environmental Protection Department
创建时间：
2022-11-13
