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澳大利亚昆士兰州海岸外的大堡礁是世界上最大的堡礁，从布里斯班以北到巴布亚湾延伸2000多千米．向大洋中伸展达300千米，总共占据的海域面积约25．9万平方千米。大堡礁南3000多个珊瑚礁体和小岛组成，有的仅几米宽，有的则有50平方千米。尽管珊瑚只占大堡礁生物的1／10，
大堡礁珊瑚2022年将再次减半
【摘 要】
：
澳大利亚昆士兰州海岸外的大堡礁是世界上最大的堡礁，从布里斯班以北到巴布亚湾延伸2000多千米．向大洋中伸展达300千米，总共占据的海域面积约25．9万平方千米。大堡礁南3000多个珊
【出 处】
：
防灾博览
【发表日期】
：
2012年6期
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