基于无人机的东北鼢鼠种群数量调查最佳尺度选择  

Optimal unmanned aerial vehicle(UAV)height and sampling area for aerial photography-based survey of the Manchurian zokor population

作　　者：孙珊珊 满都呼 伟军 朝克图 阿焱 张恒 付和平 武晓东 袁帅 SUN Shanshan;Manduhu;Weijun;Chaoketu;Ayan;ZHANG Heng;FU Heping;WU Xiaodong;YUAN Shuai(College of Grassland,Resources and Environment,Inner Mongolia Agricultural University/Rodent Research Center,Hohhot 010011,Inner Mongolia,China;Grassland Workstation of Hulunbuir,Inner Mongolia,Hulunbuir 021008,Inner Mongolia,China;Grassland Workstation of Ewenki Autonomous Banner,Inner Mongolia,Hulunbuir 021100,Inner Mongolia,China;Grassland Workstation of Zhengxiang White Banner,Inner Mongolia,Xilingol,013800,Inner Mongolia,China;College of Life Sciences,Inner Mongolia Agricultural University,Hohhot 010011,Inner Mongolia,China)

机构地区：[1]内蒙古农业大学草原与资源环境学院/啮齿动物研究中心,内蒙古呼和浩特010011 [2]内蒙古自治区呼伦贝尔市草原工作站,内蒙古呼伦贝尔021008 [3]内蒙古自治区鄂温克族自治旗草原工作站,内蒙古呼伦贝尔021100 [4]内蒙古自治区正镶白旗草原工作站,内蒙古锡林郭勒013800 [5]内蒙古农业大学生命科学学院,内蒙古呼和浩特010011

出　　处：《草业科学》2021年第9期1841-1849,共9页Pratacultural Science

基　　金：国家自然科学基金(31772667、32060256、32060395);内蒙古自然科学基金(2018MS03014、2019MS03012);内蒙古农业大学重大项目(NDZD201801);内蒙古农业大学科技成果转化专项资助(YZGC2017026)。

摘　　要：传统的地下啮齿动物种群数量统计方法如人工捕尽法、土丘计数法等,操作起来费时耗力。无人机航拍技术是一种灵活性强、易操作、可实现地面数据与航拍影像动态分析的技术。本研究基于无人机(unmanned aerial vehicle,UAV)航拍技术,采用不同飞行高度和拍摄面积在呼伦贝尔草甸草原13处具有代表性地点调查东北鼢鼠(Myospalax psilurus)地面土丘密度。对航拍影像进行目视解译提取土丘数量,结合地面人工调查测定土丘数量,分析最佳航拍高度;分析航拍面积与土丘密度之间的关系,明确无人机调查东北鼢鼠地面土丘的最小取样面积。研究结果表明,在呼伦贝尔草甸草原地区,调查东北鼢鼠种群相对数量时,无人机最佳航拍高度为50 m,最小取样面积为2.21 hm^(2)。The traditional methods used for surveying underground rodent populations,such as the manual trapping and mound counting methods,are time consuming and labor intensive.Aerial photography by an unmanned aerial vehicle(UAV)is a flexible,easy-to-operate technology that can realize the dynamic analysis of ground data and aerial images.In this study,UAV-facilitated aerial photography,conducted at different flight altitudes and shooting areas,was used to investigate the density of ground mounds of Myospalax psilurus at 13 representative locations in the meadow grasslands of Hulunbuir.In combination with a manual ground survey of the mound numbers,the aerial images were visually interpreted to determine the number of mounds and to analyze the best aerial height of the drone.The relationship between the aerial photography area and the mound density was analyzed,and the minimum sampling area for the UAV investigation of the M.psilurus ground mounds was clarified.The results indicated that for investigating the relative population of M.psilurus in the meadow grasslands of Hulunbuir,the best aerial photography height of the drone is 50 m and the minimum sampling area is 2.21 ha.

关 键 词：无人机 呼伦贝尔 草甸草原 目视解译 土丘密度 航拍高度 取样面积 

分 类 号：S812[农业科学—草业科学]