In January 2007, the State Oceanic Administration released the "China Marine Environment Quality Bulletin," revealing that marine pollution in China's coastal waters remained a significant environmental challenge. Throughout the year, 82 red tide events were recorded, covering an area of approximately 11,610 square kilometers. These incidents were primarily concentrated in the East China Sea, indicating ongoing ecological concerns in this region. The bulletin also highlighted that while there was a slight improvement in the water quality of offshore areas, overall pollution levels remained severe. Most of the open-sea regions were still considered clean, with good water conditions. However, about 145,000 square kilometers of sea areas did not meet the standards for clean water, a decrease of roughly 400,000 square kilometers compared to 2006. Severely polluted zones were mainly found in areas such as Liaodong Bay, Bohai Bay, Huanghekou, Laizhou Bay, the Yangtze River estuary, Hangzhou Bay, the Pearl River estuary, and nearshore waters of major cities. The primary pollutants included inorganic nitrogen, active phosphates, and oil, with the Bohai Sea continuing to be one of the most affected regions. Approximately 24,000 square kilometers of the Bohai Sea failed to meet clean water standards, representing around 31% of its total area. Li Xiaoming, Director of the Marine Environmental Protection Division at the State Oceanic Administration, emphasized that local marine authorities had intensified their monitoring of land-based discharge outlets. Among the 573 monitored outlets, about 87.6% exceeded environmental standards. The main pollutants included chemical oxygen demand, phosphate, suspended solids, and ammonia nitrogen. Provinces like Guangxi, Jiangsu, and Zhejiang saw some of the highest rates of non-compliant sewage discharges, underscoring regional disparities in marine pollution control efforts. These findings reflect the ongoing challenges faced by China in managing marine pollution and highlight the need for continued regulatory action and environmental protection measures to safeguard coastal ecosystems.

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