Habitat Suitability for Chiru (Pantholops hodgsonii): Implications for Conservation Management Across the Tibetan Region of Chang Tang
Habitat Suitability for Chiru (Pantholops hodgsonii): Implications for Conservation Management Across the Tibetan Region of Chang Tang
复制标题
藏羚羊（Pantholops hodgsonii）的栖息地适宜性：对羌塘藏族地区保护管理的影响
DOI：
10.1002/jwmg.846
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发表时间：
2015
期刊：
影响因子：
--
通讯作者：
Qi Dunwu
中科院分区：
文献类型：
--
作者：
Qi Guilan;Hu Yibo;Owens Jacob R.;Dai Qiang;Hou Rong;Yang Zhisong;Qi Dunwu
了解人口密度与栖息地的关系是基本生态理论的基础，并且与保护问题相关。藏羚羊（Pantholops hodgsonii）是青藏高原特有的濒临灭绝的草原有蹄类动物。为了为该物种制定有效的保护和管理策略，我们需要详细了解群体规模和栖息地条件之间的关系。我们对西藏羌塘地区进行了调查，并使用沿车辆线横断面收集的数据来记录藏羚羊的存在和群体规模。通过生态位因子分析，我们推断了藏羚羊与大量地形、植被和人为变量相关的生态需求。我们利用这些分析来估计栖息地适宜性模型并描述其最佳范围。藏羚羊喜欢的地区有适度的家畜放牧、缓坡以及仅在较低海拔地区存在的村庄。 Chiru 对村庄和缓坡的存在表现出高度的专业化，并且与人们容易到达的区域呈负相关。我们建议采取新的管理措施来长期保护藏羚羊。具体来说，我们认识到保护大型群体可能需要特别努力，因此重点关注恢复天然平原以供藏羚羊放牧。对于较小的群体和独居藏羚羊来说，大片不适宜或边缘地区可能会使它们面临不同的威胁，从而给保护管理带来更大的挑战。 © 2015 野生动物协会。
Understanding how population density relates to habitat underlies basic ecological theory and is pertinent to conservation issues. Chiru (Pantholops hodgsonii) are an endangered steppe-dwelling ungulate endemic to the Tibetan plateau. To prepare effective conservation and management strategies for this species, we require detailed knowledge of the relationship between group size and habitat conditions. We surveyed the Chang Tang region of Tibet and used data collected along vehicular line transects to record the presence and group size of chiru. Using ecological niche factor analysis, we inferred the ecological requirements of chiru in relation to a large number of topographic, vegetation, and anthropogenic variables. We used these analyses to estimate habitat suitability models and describe their optimum range. Areas favored by chiru had moderate grazing by domestic animals, gentle slopes, and villages present only at lower altitudes. Chiru showed a high level of specialization regarding the presence of villages and gentle slopes, and were negatively associated with areas of those easily accessed by people. We suggest new management measures for the long-term conservation of chiru. Specifically, we focus on the rehabilitation of natural plains for grazing by chiru, recognizing that conservation of large groups may require special efforts. For smaller groups and solitary chiru, the large tracts of unsuitable or marginal areas may expose them to different threats that could pose greater challenges for conservation management. © 2015 The Wildlife Society.