基于无人机影像的高寒草甸两种鼠类种群分布的影响因子OA

To elucidate the mechanisms by which habitat factors affect the population distribution of plateau pika(Ochotona curzoniae)and plateau zokor(Myospalax baileyi)in alpine meadows of Qinghai Province and verify an efficient method for monitoring rodent damage,this study was based on drone imagery and manual visual interpretation was used to obtain information on six main factors that affect the distribution of rodent pests:water source,human habitat,slope,aspect,topography,and altitude.The impacts of these factors on the distribution of plateau pika burrows and plateau zokor mounds were analyzed.The results showed that the numbers of plateau pika burrows and plateau zokor mounds initially increased and then decreased as the distance from water sources increased,peaking within the range of 51-100 m.The numbers of plateau pika burrows and plateau zokor mounds exhibited a gradually increasing trend with the distance from human settlements,peaking at 201-250 m.The plateau pikas preferred south-facing or semi-sunny slopes,whereas the plateau zokors favored shady slopes.The plateau pika burrows and plateau zokor mounds were both concentrated in areas with slopes of 0°-5°.The plateau pika burrows were primarily distributed at altitudes of 3 751-4 000 m,but the plateau zokor mounds were most abundant at 4 000-4 050 m.The method of collecting rodent damage information through drones had obvious advantages over manual collection,which can effectively reduce monitoring costs and verify the monitoring efficiency of UAV technology in preventing and controlling rodent damage in the alpine meadows of the Qinghai Tibet Plateau.