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首页> 外文期刊>Scientific reports. >Hidden treasure of the Gobi: understanding how water limits range use of khulan in the Mongolian Gobi
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Hidden treasure of the Gobi: understanding how water limits range use of khulan in the Mongolian Gobi

机译：戈壁的隐藏宝藏：了解水限制如何在蒙古戈壁中使用夸兰

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摘要

Most large herbivores in arid landscapes need to drink which constrains their movements and makes them vulnerable to disturbance. Asiatic wild ass or khulan (Equus hemionus) were widespread and abundant throughout the arid landscapes of Central Asia and Mongolia, but have undergone dramatic population declines and range constrictions; denying khulan access to water is believed to have played a major role. Mongolia’s South Gobi Region now houses the world largest remaining khulan population, but is undergoing rapid land use changes. Khulan water use is poorly understood, largely due to the difficulty of mapping waterpoints used by khulan throughout their exceptionally large ranges, prone to high variations in precipitation. We used the special movement path characteristics of GPS tagged khulan to show us where water is located. We identified 367 waterpoints, 53 of which were of population importance, characterized the seasonal and circadian use, and identified snow cover as the most important variable predicting khulan visits during the non-growing season, and vegetation greenness during the growing season. Our results provide a data layer to help guide a regional khulan conservation strategy, allow predictions for other part of the global khulan range, and illustrates the overall importance of waterpoints for dryland herbivores.
机译：干旱景观中大多数大型食草动物需要饮用，这会限制他们的运动，使他们容易受到骚扰。亚洲野生屁股或Khulan（Equus hemionus）在中亚和蒙古的整个干旱景观中普遍且丰富，但经历了戏剧性的人口下降和范围收缩;否认拒绝Khulan进入水被认为发挥了重要作用。蒙古的南戈波地区现在拥有世界上最大的剩下的夸兰人口，但正在进行迅速的土地利用变化。 Khulan用水很差理解，主要是由于难以在其特殊的大范围内映射夸兰的水点，容易沉淀的高变化。我们使用了GPS的特殊运动路径特征标记为夸兰，向我们展示水的地方。我们确定了367个水路，其中53名是人口重要性，其特征在于季节性和昼夜昼夜使用，并确定了雪覆盖，作为预测昆仑在非生长季节期间的最重要变量，以及在不断增长的季节期间的植被绿色。我们的结果提供了一个数据层，以帮助指导区域夸兰保护策略，允许预测全球夸兰范围的其他部分，并说明了旱地食草动物的水路的总体重要性。

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