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Quokkas, wallabies found dead in Aussie zoo_我的网站

一 |     【文/观察者网 宰可欣】     2026年8月26日，黄龙国家级风景名胜区管理局在公众号上对网传牦牛闯入黄龙五彩池作出回应，情况通报如下：     8月25日15时11分，景区巡护人员发现4头牦牛进入五彩池区域，随即温和引导驱离，15时22分牦牛全部离开该区域，无人员受伤，游览秩序正常。    Adelaide (Australia), Oct 12 (UNI) An Australian zoo is investigating the sudden deaths of seven female quokkas and two yellow-footed rock-wallabies.
Why the marsupials died remains a mystery but "plant toxicity" is believed to be the most likely cause, an Adelaide Zoo spokeswoman was quoted as saying by the BBC.
The vet team is confident it was an isolated incident but further investigation was under way, she said.
No animals from other exhibits have shown signs of being unwell since the deaths, which happened last month.
"The loss of one animal, let alone a large group in a sudden incident such as this, is extremely upsetting, particularly for those who care for them," the spokeswoman said.
An 11-month-old quokka joey survived and is recovering in the zoo's health centre. The remaining three male quokkas have been taken off the exhibit, the BBC reported.
Other yellow-footed rock-wallabies and kangaroos were "noticeably flat" after the incident but have now recovered fully, the zoo said.
Pathology and toxicology reports have so far been inconclusive, but the zoo is carrying out more tests to discover what caused the animals to become sick.
The zoo breeds both native marsupials species, which are listed as vulnerable in the wild, the report said.
Often dubbed "the world's happiest animal", quokkas are darlings of tourist photos on social media.
But less than 15,000 remain in the wild, most on Western Australia's Rottnest Island.
UNI MR。经核查，系上游禁牧围栏遭人为破坏所致，已向景区派出所报案，案件正在调查。         视频截图     经地质专家现场评估：牦牛扰动造成局部水体短时浑浊，为短期可逆影响，水体藻类预计一周内恢复；钙华本体结构扰动轻微，轻微创面可通过自然沉积数月内完成修复。    此次事件暴露出管护工作存在短板，我们诚恳向公众致歉。下一步将全面排查防护设施，强化巡护值守，完善应急处置预案，严防同类事件重演。    据《人民日报》报道，黄龙于1992年列入《世界自然遗产名录》，以“彩池、雪山、峡谷、森林、滩流、古寺、民俗”七绝著称于世。联合国教科文组织评价其“具有绝妙的自然现象或罕见自然美的地区”，被认定为全球三大钙华梯田景观典范之一。    饱含碳酸钙的岩溶水在流动中二氧化碳逸出、碳酸钙沉积形成的层叠状石灰华景观，就是钙华。

二 |     “黄龙钙华纯度可以达到99%以上，是极高纯度的一种钙，”四川省地质环境调查研究中心高级工程师刘馨泽解释说，“钙华形成的条件比较严苛，需要很特别的‘源水’。黄龙处于青藏高原东缘，水体受高山冰雪融水补给，纯度高，颜色才好，结构才精巧。”     然而，除了地表水减少，钙华沙化黑化等问题客观存在，保护还面临着一些困难。

三 | 在2020年，央视新闻就报道过一则“多名游客踩踏黄龙景区钙华，破坏无法修复”的新闻。

四 |     在采访中，四川省地矿局一〇八地质队副队长李德华介绍，钙华形成速度较慢且十分脆弱，形成速度每一年最多的也就是几个毫米。    不仅如此，首先，游客下去踩钙华滩，会造成一种很不好的社会影响，别的游客看到这些游客下去，可能竞相效仿。    第二，下去之后，原有的平衡打破了，把钙华破坏掉，根据人的轻重，破坏的程度可能不一样，但是，绝对改变了原生的层结结构关系。在九寨沟范围内，山水是融为一体的，人下去之后，人体所带的一些物质，可能也会对水质、环境有一定影响。    最重要的是，钙华滩在岁月沉淀下形成，无论是“牦牛踩踏”还是“人为踩踏”，问题的重点都不是通过比较“谁会带来更大的影响”，来判断谁更“有资格”进入钙华滩。两者的本质都是对脆弱地貌的破坏，如何杜绝这样的破坏才是问题的关键。

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