詹姆斯库克大学TropWATER研究团队与CSIRO研究团队联合发布研究成果，指出大堡礁流域水质出现积极变化 1。该研究分析了七条主要河流系统长达37年的监测数据，这些流域覆盖了大堡礁约三分之二的集水区，面积相当于新西兰 1。结果显示，大堡礁流域七条主要河流的氮径流和悬浮沉积物水平出现小幅但可测量的改善，其中Herbert、Burdekin、Pioneer、Tully和Fitzroy河的水质均呈现向好趋势 1。
水质改善主要与合成肥料使用量大幅下降有关 1。数据显示，2024年多个甘蔗和香蕉种植区的肥料使用量较峰值下降25%至49%，且作物产量保持稳定 1。尽管水质趋势向好，但许多河流的氮和沉积物水平仍高于支持健康沿海和海洋生态系统的阈值 1。
大堡礁于1981年被列入世界遗产名录 1。自2014年以来，澳大利亚联邦和昆士兰州政府在流域项目上累计投入超过50亿澳元用于大堡礁健康 1。2028年，澳大利亚需向联合国教科文组织（UNESCO）报告水质计划进展 1。
Research teams from James Cook University's TropWATER and CSIRO have released findings indicating a slight but measurable improvement in water quality within the Great Barrier Reef catchment in Queensland, Australia 1. By analyzing 37 years of monitoring data across seven major river systems, the study revealed reduced levels of nitrogen runoff and suspended sediments 1. These river catchments cover approximately two-thirds of the Great Barrier Reef's drainage area, an expanse comparable in size to New Zealand 1. Specifically, water quality improvements were observed in the Herbert, Burdekin, Pioneer, Tully, and Fitzroy rivers 1.
The positive trends are primarily attributed to a significant decline in the use of synthetic fertilizers 1. In 2024, fertilizer application in several sugarcane and banana growing regions dropped by 25% to 49% compared to peak levels, while crop yields remained stable 1. Despite these encouraging developments, nitrogen and sediment levels in many rivers still exceed the thresholds required to support healthy coastal and marine ecosystems 1.
To support the health of the reef, the federal and Queensland state governments have collectively invested over 5 billion Australian dollars in catchment projects since 2014 1. The Great Barrier Reef was inscribed on the World Heritage list in 1981 1. Additionally, Australia is required to report on the progress of its water quality plans to UNESCO in 2028 1.
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