<br>亚洲黑熊（Ursus thibetanus）的历史和当前分布范围。,Scientific Reports

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亚洲黑熊（Ursus thibetanus）的历史和当前分布范围。
Scientific Reports ( IF 3.8 ) Pub Date : 2024-01-30 , DOI: 10.1038/s41598-024-51588-5
Unza Waqar ₁ , Tariq Mahmood ₁ , Muhammad Mushtaq ₁ , Ghulam Murtaza _{2,

3} , Muzna Kashaf ₁ , Ayesha Sheraz ₁

Affiliation

亚洲黑熊（Ursus thibetanus）的当前分布可在 IUCN 濒危物种红色名录网站上找到;然而，关于该物种的历史范围和出现情况一无所知。因此，我们旨在了解亚洲黑熊的历史分布，并绘制和估计其总大小，以将其与物种当前分布进行比较。此外，我们还分析了该物种过去和当前范围内的保护区网络。我们采用地理信息系统（GIS）软件重建和测量亚洲黑熊的历史活动范围，比较过去和现在的活动范围，以分析其预期的活动范围收缩。该研究的主要重点是加强我们对该物种历史分布的理解，为现在和未来的前景制定更好的保护策略。GIS 工具的使用有助于全面探索影响物种减少的因素，最终有助于更有效的管理和保护工作。我们利用已发表的黑熊在历史上任何地方的出现记录来重建其历史分布范围。结果显示，亚洲黑熊在历史上分布更广泛，其活动范围约为 1586 万 km2，而目前的活动范围仅限于约 785 万 km2，活动范围缩小了约 49.5%（减少了 802 万 km2）。发现该物种历史范围内的总保护区为 N = 9933，总面积为 94.6 万平方公里，而当前范围内的 N = 6580（66.7 万平方公里）。大约 27 人。自历史以来，5% 的保护区已经失去了亚洲黑熊。

"点击查看英文标题和摘要"

Historical and current distribution ranges of the Asiatic black bear (Ursus thibetanus).

The current distribution of Asiatic black bear (Ursus thibetanus) is available on the IUCN Red List of Threatened species website; however, nothing is known about the historical extent and occurrence of this species. Therefore, we aimed to understand the historical distribution of the Asiatic black bear, and map and estimate its total size, to compare it with that of species current distribution. In addition, we analyzed a network of protected areas in the past and current ranges of the species. We employed geographic information system (GIS) software to reconstruct and measure the historical range of the Asiatic black bear, comparing past and current ranges to analyze its expected range contraction. The main focus of the study was to enhance our understanding of the species' historical distribution, contributing to better conservation strategies for the present and future perspectives. The utilization of GIS tools facilitates a comprehensive exploration of the factors influencing the species' decline, ultimately aiding in more effective management and conservation efforts. We used published records of black bear's occurrence in anywhere in history to reconstruct its historical distribution range. Results revealed that the Asiatic black bear was more widely distributed in historical times and its range spanned across approximately 15.86 million km2 while its current range is limited to approximately 7.85 million km2, showing a range contraction of approximately 49.5% (8.02 million km2 reduced). The total protected areas in the historical range of the species were found to be N = 9933, with total size of 0.946 million km2, against N = 6580 (0.667 million km2) that are present in the current range. Approximately 27.5% of the protected areas have lost the Asiatic black bear since historical times.

更新日期：2024-01-30

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