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美媒:中国大熊猫栖息地萎缩 面积比1988年还小

2017-09-27 02:27:06   参考消息网

(原标题:美媒称中国大熊猫栖息地一直在萎缩:面积比1988年还小)


资料图:在位于四川的中国大熊猫保护研究中心雅安碧峰峡基地拍摄的玩耍的大熊猫。

参考消息网9月27日报道美媒称,中国科学家25日宣布,世界上最可爱的动物大熊猫遇到了麻烦。而且孕育可爱的熊猫宝宝也处在危险情况中。

据《今日美国》9月25日报道,研究人员报告说,中国大熊猫栖息地在过去30年里一直在萎缩和分裂。中国是世界上唯一一个有野生大熊猫的国家。

根据英国《自然·生态学与进化》杂志发表的这项新研究,总体上,大熊猫栖息地的状况比1988年其首次被列为濒危物种时的情况还要糟。

研究发现,地震、人类侵占、农业、筑路和伐木都是将大熊猫栖息地划分为更小面积的原因。这是一个被称为“碎片化”的过程。

研究报告的作者之一、杜克大学的斯图尔特·皮默说,这可能会对“大熊猫交配”造成严重破坏。他指出,由于熊猫种群的分离,一些种群最终可能都是雄性,或者其他种群都是雌性。

皮默说,“国际自然保护联盟最近将大熊猫的地位从‘濒危’变成了受威胁程度较少的‘易危’”,“这是以越来越多的数字为基础的,这当然是一个非常令人鼓舞的迹象。”

据估计,目前有1900只大熊猫生活在野外,但其中包括上世纪80年代的几百只大熊猫。

尽管如此,这项新研究得出的结果还是给最近的乐观情绪增添了一些谨慎的要素。当把大熊猫从“濒危”调整到“易危”时,并没有考虑到栖息地缩小的问题。

为了进行这项研究,杜克大学的皮默,中国科学院的欧阳志云以及其他几位合著者利用卫星图像,研究了从1976年到2013年整个大熊猫所在地理范围的变化。

皮默说,通过遥感或GIS等新技术,“我们现在可以对物种的状况进行更仔细的评估”。

皮默说,幸运的是,没有任何迹象表明这种可爱的动物会灭绝。不过,“我们要一直保持警惕。我们希望确保能密切关注新的进展,而有了新的技术,我们能做到这一点。”

责任编辑:穆启春 CN063
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