大理大学学报

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红外相机最小监测强度的影响因素研究

    

  1.  (1.大理大学东喜玛拉雅研究院,云南大理 671003;2.兰坪云岭省级自然保护区管护局,
    云南兰坪 671400)
  • 收稿日期:2019-07-03 出版日期:2020-06-15 发布日期:2020-06-15
  • 作者简介:张永俊,2016级生物科学专业本科生。
  • 基金资助:
     国家自然科学基金项目(31860164;31860168;31760126;31560118);大理大学博士启动费项目(KYBS201509)

Study on the Influencing Factors of the Minimum Trapping Effort of Infrared Camera

    

  1.  (1. Institute of Eastern-Himalaya Biodiversity Research, Dali, Yunnan 671003, China; 2. Management and Protection Bureau of
    Yunling Provincial Nature Reserves in Lanping County, Nujiang, Yunnan 671400, China)
  • Received:2019-07-03 Online:2020-06-15 Published:2020-06-15
  • Supported by:
     

摘要:  目的:了解植被类型、海拔和季节对红外相机所需最小监测强度(minimum trapping effort,MTE),即监测时长的影响。方法:在兰坪云岭省级自然保护区位于海拔 3 400 m的灌丛、常/落阔混交林、针叶林和针阔混交林,以及海拔分别为3 100、3 400、3 700 m 的常/落阔混交林开展红外相机监测。结果:为期 1 年的监测,累积有效拍摄 3 785 d,获得独立照片(independent photograph,IP)508张。各植被类型和海拔中,仅有灌丛和最高海拔(3 700 m)的红外相机达到MTE。各植被类 型(Sørenson Index:S Max =47.62%,S Min =25.00%)和海拔(Sørenson Index:S Max =50.00%,S Min =17.65%)的物种多样性相似度均较低。所有相机位点:雨季监测的物种数、IP值及其累积速率均高于旱季,且雨/旱季的物种多样性的相似度仅为43.14%。结论:在物种多样性监测研究中,可在灌丛和高海拔位点合理减少监测时长,但总体而言,监测期不应少于1年,且需包含雨季和旱季,同时,相机位点应该覆盖更多的植被类型,加大海拔分辨率。

 

关键词:  红外相机, MTE, 植被类型, 海拔, 季节

Abstract:  Objective: To understand the effects of vegetation type, elevation and season on the minimum trapping effort(MTE)required for infrared camera, i.e. the duration of the monitoring. Methods: This camera trap study was located in the Lanping Yunling Provincial Nature Reserves at the elevation of 3 400 m and the vegetation types of shrubs, constant/lost mixed forest, the coniferous forests and coniferous and broad-leaved mixed forest, and the vegetation type of constant/lost mixed forest and the elevation of 3 100,3 400, 3 700 m respectively. Results: During the 1-year monitoring period, the cumulative effective shooting was 3 785 d, and 508

independentphotograph(IP)wereobtained.Amongthevegetation typesand elevations,onlytheshrub an the highestelevation(3 700 m)
camera trap reached the MTE. The species diversity of the vegetation types(Sørenson Index: S Max = 47.62%, S Min = 25.00%)and altitude
(Sørenson Index: S Max = 50.00%, S Min = 17.65%)were lower. All camera sites: The number of species, IP account and accumulation rate
during the rainy season were higher than the dry season, and the similarity of species diversity in the rain/dry season was only 43.14%.
Conclusion: In the species diversity monitoring study, the monitoring duration can be reasonably reduced at the shrub and high-
altitude sites, but in general, the monitoring period should be no less than 1 year, and the rainy and dry seasons should be included.
More vegetation types should be covered and altitude resolution should be increased.

Key words: infrared camera, MTE, vegetation types, elevation, season

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