2024-08-26-亚开行-中国的气候适应性海洋治理（英）_9页_545kb

报告摘要

Temperature Rise: Sea surface temperatures in China are rising faster than the global average, with projections indicating significant increases by the end of the century.
Sea Level Rise: Average sea level rise over China's coastlines is at 3.4 mm per year (exceeding the global average), with regional variations; projections show an additional rise of 55–170 mm in the next 30 years. Seas are rising due to factors like glacial melt and human activities.
Ocean Acidification: Seawater pH has dropped by 0.012–0.014 annually since 1999 in some areas, leading to reduced shell formation in marine organisms and harming ecosystems like coral reefs.
Deoxygenation: Oxygen levels in waters, such as the Bohai Sea, have decreased by 0.2–0.8 micromoles/kg/year since the 1970s, contributing to dead zones where marine life cannot survive.
Other Effects: Warmer waters alter ocean currents and nutrient transport; this exacerbates coral bleaching, disrupts migratory patterns, and increases vulnerability of coastal ecosystems to heat waves and storms.

Integrated Ocean Governance: Develop a unified governance framework fostering interagency coordination, such as the Yellow River Ecological Corridor Program, to address upstream-downstream issues and strengthen policies for sustainable coastal management.
Marine Conservation: Establish and manage well-defined marine protected areas (MPAs) and implement ecosystem restoration projects to safeguard biodiversity and habitats like coral reefs, mangroves, and seagrass beds.
Sustainable Fisheries: Enforce effective fishing quotas based on scientific data; scientifically assess catch limits to ensure long-term viability of fish stocks amid shifting distributions due to warming oceans.
Scientific Research and Monitoring: Invest in research on ocean-climate interactions; develop advanced monitoring systems to track changes in net primary production, biomass, and biodiversity.
Disaster Risk Management: Enhance early warning systems and disaster preparedness strategies to address hazards like sea level rise, tropical storms, and flooding.

Note: These findings highlight urgent policy needs to mitigate climate risks and vulnerabilities in China's marine environment.

展开完整摘要