UAV

Unmanned Aerial Vehicle-Based Mapping of Turf-Banked Solifluction Lobe Movement and Its Relation to Material, Geomorphometric, Thermal and Vegetation Properties

Solifluction is one of the most widespread periglacial processes with low annual movement rates in the range of millimeters to centimeters. Traditional methods to assess solifluction movement usually have low spatial resolution, which hampers our …

UAV Data as Alternative to Field Sampling to Map Woody Invasive Species Based on Combined Sentinel-1 and Sentinel-2 Data

Invasive plant species can pose major threats to biodiversity, ecosystem functioning and services. Satellite based remote sensing has evolved as an important technology to spatially map the occurrence of invasive species in space and time. With the …

How Canopy Shadow Affects Invasive Plant Species Classification in High Spatial Resolution Remote Sensing

Plant invasions can result in serious threats for biodiversity and ecosystem functioning. Reliable maps at very-high spatial resolution are needed to assess invasions dynamics. Field sampling approaches could be replaced by unmanned aerial vehicles …

Using Aboveground Vegetation Attributes as Proxies for Mapping Peatland Belowground Carbon Stocks

Peatlands are key reservoirs of belowground carbon (C) and their monitoring is important to assess the rapid changes in the C cycle caused by climate change and direct anthropogenic impacts. Frequently, information of peatland area and vegetation …

Pilot Study on the Retrieval of DBH and Diameter Distribution of Deciduous Forest Stands Using Cast Shadows in UAV-Based Orthomosaics

One fundamental metric to characterize trees and forest stands is the diameter at breast height (DBH). However, the vertical geometry of tree stems hampers a direct measurement by means of orthographic aerial imagery. Nevertheless, the DBH in …

Automatic Single Palm Tree Detection in Plantations Using UAV-Based Photogrammetric Point Clouds

$<$p$>$For reasons of documentation, management and certification there is a high interest in efficient inventories of palm plantations on the single plant level. Recent developments in unmanned aerial vehicle (UAV) technology facilitate spatial and …

Uav-Based Photogrammetric Point Clouds - Tree Stem Mapping in Open Stands in Comparison to Terrestrial Laser Scanner Point Clouds

In both ecology and forestry, there is a high demand for structural information of forest stands. Forest structures, due to their heterogeneity and density, are often difficult to assess. Hence, a variety of technologies are being applied to account …