野生动物第六次灭绝正在加速
<p>科学家一致认为，全球野生动物第六次大灭绝已经开始。世界自然基金会去年10月公布的报告显示，受人类活动影响，全球野生动物数量自1970年以来已锐减58%，如不采取行动，世界上三分之二的野生动物可能会在10年内消失。日前新研究指出，生物灭绝已经加快了速度，如今连猎豹、狮子、长颈鹿这样的常见野生动物也陷入了生存危机。</p><p><span word="The">The</span> <span word="sixth">sixth</span> <span word="mass">mass</span> <span word="extinction">extinction</span> <span word="of">of</span> <span word="life">life</span> <span word="on">on</span> <span word="Earth">Earth</span> <span word="is">is</span> <span word="unfolding">unfolding</span> <span word="more">more</span> <span word="quickly">quickly</span> <span word="than">than</span> <span word="feared">feared</span>, <span word="scientists">scientists</span> <span word="have">have</span> <span word="warned">warned</span>.</p><p>科学家们警告称，全球野生动物“第六次大灭绝”的速度比预期的还要快。</p><p><span word="More">More</span> <span word="than">than</span> 30 <span word="percent">percent</span> <span word="of">of</span> <span word="animals">animals</span> <span word="with">with</span> <span word="a">a</span> <span word="backbone">backbone</span> - <span word="fish">fish</span>, <span word="birds">birds</span>, <span word="amphibians">amphibians</span>, <span word="reptiles">reptiles</span> <span word="and">and</span> <span word="mammals">mammals</span> - <span word="are">are</span> <span word="declining">declining</span> <span word="in">in</span> <span word="both">both</span> <span word="range">range</span> <span word="and">and</span> <span word="population">population</span>, <span word="according">according</span> <span word="to">to</span> <span word="the">the</span> <span word="first">first</span> <span word="comprehensive">comprehensive</span> <span word="analysis">analysis</span> <span word="of">of</span> <span word="these">these</span> <span word="trends">trends</span>.</p><p>对动物灭绝趋势的首个全面分析结果显示，超过30%的脊椎动物，例如鱼类、鸟类、两栖动物、爬行动物以及哺乳动物等，它们的种类和数量都在减少。</p>
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