生物多样性 ›› 2024, Vol. 32 ›› Issue (7): 24076.  DOI: 10.17520/biods.2024076  cstr: 32101.14.biods.2024076

• 研究报告: 动物多样性 • 上一篇    下一篇

怒江云南段鱼类多样性现状与威胁因子

张作鹏1,2,3,4(), 要晨阳2,3,4,5(), 吴玲2,3,4(), 罗遵兰6, 孙光6, 郭宗勇7, 李晓思7, 林峰2,3,4,5,*()(), 陈小勇2,3,4,*()()   

  1. 1.安徽师范大学生命科学学院, 安徽芜湖 241000, 中国
    2.中国科学院昆明动物研究所遗传资源与进化国家重点实验室&云南省高黎贡山生物多样性重点实验室, 昆明 650201, 中国
    3.中国科学院东南亚生物多样性研究中心, 内比都 05282, 缅甸
    4.云南省东南亚生物多样性保护国际联合实验室, 云南勐腊 666303, 中国
    5.中国科学院大学, 北京 100049, 中国
    6.中国环境科学研究院, 北京 100012, 中国
    7.怒江傈僳族自治州渔业工作站, 云南泸水 673199, 中国
  • 收稿日期:2024-03-02 接受日期:2024-05-24 出版日期:2024-07-20 发布日期:2024-06-20
  • 通讯作者: *E-mail: linfengmail0409@163.com; chenxy@mail.kiz.ac.cn
  • 基金资助:
    中国科学院国际伙伴计划项目(E1ZK251);生态环境部生物多样性调查评估项目(2019HJ2096001006);云南省科技厅建设面向南亚东南亚科技创新中心专项(202203AP140007);中国科学院东南亚生物多样性研究中心项目(Y4ZK111B01)

Fish diversity and threat factors in the Yunnan section of the Nujiang River

Zuopeng Zhang1,2,3,4(), Chenyang Yao2,3,4,5(), Ling Wu2,3,4(), Zunlan Luo6, Guang Sun6, Zongyong Guo7, Xiaosi Li7, Feng Lin2,3,4,5,*()(), Xiaoyong Chen2,3,4,*()()   

  1. 1. College of Life Sciences, Anhui Normal University, Wuhu, Anhui 241000, China
    2. State Key Laboratory of Genetic Resources and Evolution & Yunnan Key Laboratory of Biodiversity and Ecological Conservation of Gaoligong Mountain, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650201, China
    3. Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences, Nay Pyi Taw 05282, Myanmar
    4. Yunnan International Joint Laboratory of Southeast Asia Biodiversity Conservation, Mengla, Yunnan 666303, China
    5. University of Chinese Academy of Sciences, Beijing 100049, China
    6. Chinese Research Academy of Environmental Sciences, Beijing 100012, China
    7. Fishery Workstation of Nujiang Lisu Autonomous Prefecture, Lushui, Yunnan 673199, China
  • Received:2024-03-02 Accepted:2024-05-24 Online:2024-07-20 Published:2024-06-20
  • Contact: *E-mail: linfengmail0409@163.com; chenxy@mail.kiz.ac.cn
  • Supported by:
    International Partnership Program of Chinese Academy of Sciences(E1ZK251);Biodiversity Survey and Assessment Project of the Ministry of Ecology and Environment(2019HJ2096001006);Yunnan Province Science and Technology Department(202203AP140007);Program of Southeast Asia Biodiversity Research Institute, Chinese Academy of Sciences(Y4ZK111B01)

摘要:

怒江是中国西南地区重要的国际河流, 是云南六大水系之一。为了解怒江云南段的鱼类多样性现状及受威胁因素, 本研究于2019-2020年对怒江云南段的干流及其支流的53个采样点进行了系统的调查, 并对该流域的鱼类多样性和威胁因子进行了分析。结果表明, 怒江云南段共记录鱼类9目26科59属89种, 本研究采集到鱼类6目20科42属51种。相对重要性指数分析发现, 怒江云南段优势种为密带南鳅(Schistura poculi), 且指数得分远远高于其他鱼类。物种多样性指数表明, 怒江云南段 Shannon-Wiener多样性指数、Margalef物种丰富度指数、Simpson优势度指数、Pielou均匀度指数分别为2.10、5.91、0.71、0.53; 怒江干流以及两条较大支流罗明坝河和勐波罗河鱼类多样性较高。相似度分析发现, 怒江云南段各河段或河流鱼类组成差异较大。通过Pheatmap对威胁因子分析, 结果显示对怒江云南段鱼类多样性的主要威胁因素依次为农业/生活垃圾污染、捕捞、外来种入侵和支流水利水电工程建设。

关键词: 怒江, 鱼类资源, 鱼类多样性, 威胁因子

Abstract

Aims: The Nujiang River is an important international river in southwestern China and one of the six major drainages in Yunnan. This study aims to understand the fish diversity and threat factors in the Yunnan section of the Nujiang River.

Methods: A systematic survey of 53 sampling sites in the Yunnan section of Nujiang River from 2019 to 2020 was conducted. The indices of Margalef species richness index, Shannon-Wiener diversity index, Pielou’s evenness index, Simpson dominance index was used to evaluate the diversity of fishes. Jaccard similarity index was used to evaluate the similarity of fish community structures in different rivers or reaches. The index of relative importance (IRI) was calculated to determine the dominant species. Pheatmap are used to analyze the threat factors.

Results: A total of 89 fish species belonging to 59 genera, 26 families, and 9 orders were recorded in the Yunnan section of the Nujiang River. In this study, 51 fish species belonging to 42 genera, 20 families and 6 orders were collected. The IRI analysis found that the dominant species in the Yunnan section of the Nujiang River was Schistura poculi, and the index score was much higher than other fish species. The species diversity index showed that the Shannon-Wiener index, Margalef species richness index, Simpson dominance index, and Pielou’s evenness index of the Yunnan section of Nujiang River is 2.10, 5.91, 0.71, and 0.53, respectively. The mainstream of Nujiang River and its two larger tributaries, the Luomingba River and the Mengboluo River, had higher fish diversity. Similarity analysis showed that the fish composition of each section or river in the Yunnan section of the Nujiang River was quite different. Threat factor analysis found that the most threatening factors to the fish diversity in Yunnan section of the Nujiang River were agricultural and household waste pollution, fishing, invasive alien species, and hydraulic engineering and hydropower engineering construction.

Conclusions: Agricultural and household waste pollution, fishing, invasive alien species, and hydroelectric project construction are the most threatening factors to the fish diversity in Yunnan section of Nujiang River. This study provides basic survey data for the conservation and scientific management of fish diversity in the Yunnan section of Nujiang River. This information will be useful for the ecological protection and high-quality development of Nujiang River basin.

Key words: Nujiang River, fish resources, fish diversity, threat factors