UAV Imagery of Marmot Burrows in Colorado

UAV flights were conducted between August 26, 2024, and September 1, 2024, at and around the Rocky Mountain Biological Laboratory in the East River Valley, Gothic, Colorado, USA (38°57′ N, 106°59′ W; approximately 2900 m elevation). The study area included marmot colonies located in two core zones, categorized as “higher elevation” and “lower elevation” sites. Marmots were actively foraging on natural vegetation, a behavior that continues until mid-September/early-October when they retreat to their hibernacula until the following mid-April or early May.
Imagery was collected using a DJI Air 2S equipped with a 1-inch CMOS image sensor, capable of capturing high-resolution images with a 20 MP resolution. The camera has a pixel size of 2.4 µm and a focal length of 8.38 mm, ensuring detailed spatial resolution suitable for ecological applications. Images were captured at a native resolution of 5472 × 3648 pixels.
UAV flights were conducted at altitudes ranging from 10 m to 120 m above ground level, with images systematically captured at 10 m intervals.

本研究于2024年8月26日至9月1日期间，在美国科罗拉多州哥特镇东河谷落基山生物实验室及其周边区域（北纬38°57′，西经106°59′，海拔约2900米）开展了无人机（Unmanned Aerial Vehicle, UAV）飞行作业。研究区域涵盖两处核心分区的旱獭种群栖息地，分别划分为“高海拔位点”与“低海拔位点”。此时旱獭正活跃地取食天然植被，该觅食行为将持续至9月中旬/10月初，随后它们将退回冬眠洞穴，直至次年4月中旬或5月初苏醒。

影像采集使用搭载1英寸互补金属氧化物半导体（Complementary Metal-Oxide Semiconductor, CMOS）图像传感器的DJI Air 2S无人机，该设备可拍摄2000万像素（20 MP）的高分辨率影像。相机单像素尺寸为2.4 µm，焦距为8.38 mm，可提供满足生态应用需求的精细空间分辨率。影像原生拍摄分辨率为5472×3648像素。

本次无人机飞行作业的地面相对高度范围为10米至120米，影像以10米的间隔系统采集。