China Releases Trio of Marine Sector Documents Covering Ecosystem Health, Seawater Utilisation and Open Data Sharing

According to China Daily news source, the Ministry of Natural Resources has recently compiled and issued the 2025 Bulletin on China’s Marine Ecological Early Warning and Monitoring, alongside two supplementary marine industry publications rolled out in tandem.

The official bulletin lays out systematic monitoring data documenting marine ecological conditions across Chinese jurisdictional waters through 2025. Overall marine ecosystem stability is maintained nationwide, with measurable improvements recorded in localized coastal zones. 

Core coastal biomes including coral reefs, seagrass beds, mangrove wetlands and island ecological zones register predominantly excellent ecological grades. Biotic community frameworks within key estuaries and gulfs remain largely stable, with no dramatic shifts in dominant species groups and well-preserved sedimentary conditions; isolated coastal stretches still record mild seawater eutrophication.

Long-term comparative datasets show species diversity indices for offshore plankton and macrobenthos align closely with average readings from the preceding five years. Physical and chemical marine indicators, encompassing surface water salinity, pH value, inorganic nitrogen, active phosphate, chemical oxygen demand and bottom water dissolved oxygen levels, match decade-long average benchmarks.

The bulletin outlines prevailing ecological risks facing China’s coastal waters, driven largely by global climate change impacts. Sea surface temperatures across offshore regions ran 0.7 degrees Celsius above seasonal averages during summer 2025. While recorded red tide occurrences and affected water areas dropped below the 10-year average, green tides of enteromorpha prolifera and sporadic biological bloom incidents persist as recurring coastal environmental hazards.