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林业科学 ›› 2025, Vol. 61 ›› Issue (10): 164-174.doi: 10.11707/j.1001-7488.LYKX20240444

• 研究论文 • 上一篇    

西藏雅鲁藏布江流域越冬斑头雁种群数量变化及活动特征

贾茹1,王毅花1,王秀磊1,于红妍2,马存新2,李全亮2,孙戈1,徐红英3,刘冬平1,李迪强1,*(),张国钢1   

  1. 1. 国家林业和草原局生物多样性保护重点实验室 中国林业科学研究院森林生态环境与自然保护研究所 全国鸟类环志中心 北京 100091
    2. 祁连山国家公园青海省管理局 西宁 810400
    3. 北京师范大学生命科学学院 生物多样性与生态工程教育部重点实验室 北京 100875
  • 收稿日期:2024-07-15 出版日期:2025-10-25 发布日期:2025-11-05
  • 通讯作者: 李迪强 E-mail:zm7672@126.com
  • 基金资助:
    国家自然科学基金项目项目(32070530);祁连山国家公园青海省管理局。

Population Dynamics and Movement Characteristics of Wintering Bar-headed Geese in the Yarlung Tsangpo River Basin, Xizang

Ru Jia1,Yihua Wang1,Xiulei Wang1,Hongyan Yu2,Cunxin Ma2,Quanliang Li2,Ge Sun1,Hongying Xu3,Dongping Liu1,Diqiang Li1,*(),Guogang Zhang1   

  1. 1. Key Laboratory of Biodiversity Conservation of National Forestry and Grassland Administration Ecology and Nature Conservation Institute, Chinese Academy of Forestry  National Bird Banding Center of China Beijing 100091
    2. Qilian Mountain National Park Qinghai Province Management Bureau Xining 810400
    3. Key Laboratory for Biodiversity Science and Ecological Engineering,Ministry of Education College of Life Sciences,Beijing Normal University Beijing 100875
  • Received:2024-07-15 Online:2025-10-25 Published:2025-11-05
  • Contact: Diqiang Li E-mail:zm7672@126.com

摘要:

目的: 掌握雅鲁藏布江流域越冬斑头雁的重要分布地点、数量变化、栖息地利用和活动特征,为制定斑头雁种群及其栖息地保护以及禽流感监测防控策略提供科学依据。方法: 对雅鲁藏布江流域斑头雁进行3次较为全面的调查,调查方法和路线完全一致,调查范围涉及日喀则市、拉萨市和山南市辖区范围内的16个区县,以几乎没有斑头雁分布的仁布县和尼木县为分界,将调查区域分为东部和西部,沿有斑头雁栖息的江河边及农田沼泽等地用望远镜进行扫描,记录斑头雁的种群数量、调查时间、栖息地类型等信息,采用非参数Kruskal-Wallis方法对斑头雁群体大小以及不同栖息地类型的个体数量进行显著性检验,通过卫星跟踪方法获取斑头雁在雅鲁藏布江流域的详细活动位点,在R软件中计算活动区并分析斑头雁日间和夜间的活动区面积以及对不同土地类型的利用是否存在显著差异。结果: 1) 2014和2018年斑头雁种群数量较为稳定,分别为66 729和65 261只,2022年数量增至90 987只;拉萨市的林周县和日喀则市的桑珠孜区是斑头雁越冬种群数量最多的2个区域,数量达2万只以上。2) 虽然记录到的斑头雁最大种群数量为9 265只,但斑头雁仍以300只以下的种群为主,1 000只以上的种群较少,不同种群大小间存在显著差异。3) 斑头雁在不同年份对不同栖息地的利用情况存在差异,但均偏向于在未翻耕青稞地越冬,同时对沼泽的偏好很高,其次是农田和天然水域;卫星跟踪结果也显示斑头雁日间主要活动于农田和草地,夜间主要栖息于水域和裸地,日间和夜间的活动区面积无显著性差异。4) 斑头雁在雅鲁藏布江流域东部和西部之间的活动相对独立,但能通过位于江孜县的年楚河产生间接联系。结论: 近年来斑头雁种群数量增长可能与其适宜栖息地面积增加有关,尤其是农田的增加,意味着冬季收割完遗留在田地中的青稞以及正在生长的冬小麦能为越冬斑头雁提供更多的食物来源。雅鲁藏布江流域东部和西部的越冬斑头雁相互交流虽然有限,但考虑到斑头雁在拉萨市和山南市之间以及日喀则市各地区之间来往较为频繁,建议当地相关部门成立多部门多区域的联防联控应急机制,科学有效地开展禽流感监测与防控。

关键词: 斑头雁, 种群数量, 活动特征, 卫星跟踪, 雅鲁藏布江流域

Abstract:

Objective: This study aims to understand important distribution sites, population dynamics, habitat use, and movement characteristics of Anser indicus (bar-headed geese) in the Yarlung Tsangpo River Basin, so as to provide a basis for formulating conservation strategies for both the bar-headed geese population and their habitats, as well as to develop monitoring and control measures for avian influenza. Method: Three comprehensive surveys of the bar-headed geese were conducted with the same survey methods and routes, and the survey area covered 16 districts or counties within the jurisdiction of Xigaze, Lhasa and Shannan. Nyemo and Rinbung counties, where there is almost devoid of bar-headed geese because of the terrain, were used as the dividing lines by which the survey area was divided into east and west. Investigators scanned the surrounding area with a telescope along the riverside, farmland and marshes, and other places where bar-headed geese inhabit, and recorded the numbers of bar-headed geese population and the survey time, habitat type and distance from investigators by dosimeter. The non-parametric Kruskal-Walli’s method was used to test the significance of the population size of bar-headed geese and the number of individuals in different habitat types. The detailed activity locations of bar-headed geese in the Yarlung Tsangpo River Basin were obtained by satellite tracking, and R software was used to calculate the activity areas and analyze whether there was significant difference in the home range size and their habitat use between daytime and nighttime. Result: 1) The wintering population of bar-headed geese remained relatively stable in 2014 and 2018, with 66 729 and 65 261 individuals, respectively, and the population increased to 90 987 individuals in 2022. Lhunzhub in Lhasa and Samzhubze in Xigaze were the two key regions with the largest wintering bar-headed goose populations of more than 20 000 individuals. 2) Although the maximum recorded population size of bar-headed geese was 9 265 individuals, the majority of population sizes was less than 300 individuals, with fewer populations exceeding 1 000. There were significant differences in sizes among different populations. 3) The utilization of different habitats by bar-headed geese varied across years, however, they consistently showed a strong preference for wintering in unplowed barley fields, along with a high reliance on marshes, followed by farmland and natural waters. At the same time, satellite tracking results also showed that bar-headed geese mainly occurred in farmland and grassland during the daytime, and preferred to roost overnight on a shallow beach in a nearby river or reservoir. There was no significant difference in the home range size between daytime and nighttime. 4) The activities of bar-headed geese in the eastern and western of the Yarlung Tsangpo River Basin were relatively independent, yet an indirect connection existed via the Nyangqu River located in Gyantse county. Conclusion: In the recent year, the increase of bar-headed geese populations may be associated with the expansion of suitable habitats, especially the increase of farmlands, which have the barley left in the fields after the winter harvest, and the growing winter wheat crops that provide additional food sources for the wintering geese. In addition, this study has also showed that the communication between the wintering bar-headed geese in the east and west of Yarlung Tsangpo River basin is limited, however, considering that geese frequently move between Lhasa and Shannan, and between various regions of Xigaze, it is recommended that the relevant local departments set up a multi-sectoral and multi-regional joint prevention and emergency control mechanism to carry out the monitoring, prevention, and control of avian influenza in an efficient and scientific manner in the Yarlung Tsangpo River Basin of Xizang.

Key words: Anser indicus, population size, activity characteristics, satellite tracking, Yarlung Tsangpo River Basin

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