长江流域水生两栖爬行动物多样性与保护
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S 931

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宜宾学院启航计划项目(2020QH07);四川省自然科学基金(2023NSFSC1157)


Diversity and conservation of aquatic amphibians and reptiles in the Yangtze River basin
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    摘要:

    为了解长江区域的水生两栖爬行动物多样性、受胁及保护现状,本研究以长江水系自然分区为主将长江流域分为11个地理单元,采用编目法揭示区域内的水生两栖爬行动物物种组成;使用G-F指数方法测度区域物种多样性;运用权重赋值法评估区域内物种的受胁现状及各区域的保护优先性。结果显示,该流域的水生两栖爬行动物共281种,其中两栖类225种,隶属2目9科37属;爬行类56种,隶属3目9科22属。该流域的水生两栖爬行动物特有种及其比例分别为119种和42.35%;国家重点保护物种数及比例分别为60种和22.06%;受胁物种数和比例分别为102种和36.30%。物种多样性总体呈现出“上游高下游低和右岸高左岸低”的分布格局;对于水生两栖动物,金沙江-雅砻江流域 (JSYL)、岷江-沱江流域 (MJTJ)和乌江-赤水河-清江流域 (WCQ) 保护优先性更高;对于水生爬行动物,江源区 (JY)、太湖流域 (TH)和中下游干流区间 (ZXG) 保护优先性更高。研究表明,长江流域的水生两栖爬行动物物种不可替代性强,保护关注度大,保护紧迫性高,建议进一步加强流域内本底资源调查,建立科学高效的联防、联控一体化保护管理体制,建立健全区域物种多样性监测及评价机制,以及注重增加科研投入与增强公众保护意识。本研究为长江流域的物种多样性保护提供了参考。

    Abstract:

    The Yangtze River Basin is a priority biodiversity conservation area of global significance. To understand the diversity, threatened situation, and conservation status of the aquatic amphibians and reptiles in the Yangtze River basin, the basin was divided into 11 geographical units mainly based on the natural drainage. The cataloging method was conducted to reveal the species composition of aquatic amphibian reptile in the area. The G-F index method was used to measure regional species diversity. The weight assignment method was used to assess the species' threat status and conservation priority in the region. The result showed that 281 species were recorded in the area, including 225 amphibians and 56 reptiles. The amphibians contained 2 orders, 9 families and 37 genera, and reptiles contained 3 orders, 9 families and 22 genera. There were 119 endemic species to the Yangtze River Basin, accounting for 42.35%; 60 species are under state key protection, accounting for 22.06%; 102 species were threatened, accounting for 36.30%. The species diversity of the two taxa showed a similar distribution pattern of "Upstream high, downstream low and right bank high, left bank low". For aquatic amphibians, the Jinshajiang-Yalong sub-basin (JSYL), Minjiang-Tuojiang sub-basin (MJTJ) and Wujiang-Chishuihe-Qingjiang sub-basin (WCQ) have higher conservation priority; For aquatic reptiles, the Headwater of Yangtze River basin (JY), the Taihu sub-basin (TH) and the Middle-Lower mainstream sub-basin (ZXG) have higher conservation priority. The results indicated that the irreplaceability of aquatic amphibians and reptiles was strong in the Yangtze River Basin, the protecting attention and the protection urgency were also high. So, we suggest further strengthening the investigation of the background resources in the basin, establishing a scientific and efficient integrated protection management system for joint prevention and control, establishing and improveing monitoring and evaluation mechanism for regional species diversity, and paying attention to increasing scientific research investment and enhancing public conservation awareness. This study provides an important reference for the conservation of species diversity in the Yangtze River basin.

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舒国成,何忠萍,郭鹏,贺锦锌,杜文宇,胡琳,李成,谢锋.长江流域水生两栖爬行动物多样性与保护[J].水产学报,2023,47(2):029303

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  • 收稿日期:2022-09-30
  • 最后修改日期:2023-02-06
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  • 在线发布日期: 2023-03-01
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