WEBVTT

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大家好，欢迎收看《自然世界事实认知计划》

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在这个新系列节目中，我会解释

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对野生动物保护的重要性
以及该采取什么措施去帮助保护它们

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在这段视频，我请来了Alex Collins。

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他是YouTube上的一位野生动物爱好者

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也是布里斯托尔大学的生物学家

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他的频道链接如下

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我建议大家去看看

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关于世界上最稀有物种的视频

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以及该采取什么措施去帮助它们

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那么，什么是海洋保育？

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海洋保育的定义是保护海洋生态系统

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重点是限制人类对其造成的破坏

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以及保护受威胁的物种

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海洋面临的主要威胁包括物种丧失

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栖息地退化

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以及生态系统功能的变化

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人类活动导致物种灭绝率上升

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导致生物多样性大幅减少

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尤其是珊瑚礁，八成以上的珊瑚礁

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受到过度二氧化碳排放的威胁

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这些珊瑚礁是地球上
最重要的生物多样性宝库之一

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珊瑚虫形成珊瑚礁
需要大约一万年的时间

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而珊瑚礁完全成熟

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需要3000万年

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估计有百分之二十五的海洋生物
栖息在珊瑚礁上

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然而，在世界各地，

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珊瑚礁正在消亡

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因为气温升高和压力大的情况下

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珊瑚被迫排出赖以生存的彩色藻类

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使珊瑚漂成白色

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那么，为什么这很重要？

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为什么海洋保育如此重要？

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世界海洋目前比以往任何时候
都受到更大的威胁

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在过去的30年里
世界上一半的珊瑚礁已经消亡

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海洋保育

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从未像今天这样重要

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