A5077675870- Remote Sensing and LiDAR Applications
- Remote Sensing in Agriculture
- 3D Surveying and Cultural Heritage
- Species Distribution and Climate Change
- Plant nutrient uptake and metabolism
- Soil and Unsaturated Flow
- Soil Carbon and Nitrogen Dynamics
- Archaeological Research and Protection
- Forest Ecology and Biodiversity Studies
Czech University of Life Sciences Prague
2019-2024
Abstract Ecosystem structure, especially vertical vegetation is one of the six essential biodiversity variable classes and an important aspect habitat heterogeneity, affecting species distributions diversity by providing shelter, foraging, nesting sites. Point clouds from airborne laser scanning (ALS) can be used to derive such detailed information on structure. However, public agencies usually only provide digital elevation models, which do not Calculating structure variables ALS point...
Most ground filtering algorithms are primarily designed for airborne LiDAR point cloud processing and their successful use in identifying points from photogrammetric clouds remains questionable. We compared six implemented Metashape, ArcGIS, CloudCompare, LAStools, PDAL. used UAV photogrammetry-based (acquired under leaf-off conditions) (leaf-on) of the same area to: (i) compare accuracy generated DTMs; (ii) evaluate effect vegetation density terrain slope on accuracy; (iii) assess which...
With the ever-improving advances in computer vision and Earth observation capabilities, Unmanned Aerial Vehicles (UAVs) allow extensive forest inventory description of stand structure indirectly. We performed several flights with different UAVs popular sensors over two sites coniferous forests various ages flight levels using custom settings preset by solution suppliers. The data were processed image-matching techniques, yielding digital surface models, which further analyzed lidR package R....
Airborne laser scanning (ALS) is increasingly used for detailed vegetation structure mapping; however, there are many local-scale applications where it economically ineffective or unfeasible from the temporal perspective. Unmanned aerial vehicles (UAVs) airborne imagery (AImg) appear to be promising alternatives, but only a few studies have examined this assumption outside exploited areas (forests, orchards, etc.). The main aim of study was compare usability normalized digital surface models...
Abstract Organic amendments are commonly applied singularly to soils improve physical, biological and chemical properties, but their combination may be even more advantageous than when alone. In this study manure was in with biochar (90:10 50:50 ratios) a drought prone agricultural Regosol field evaluation. Samples were collected twice year for 2 years subjected testing moisture retention, nutrient status microbial activity whilst weed growth monitored by drone. Substantial seasonal...
Mapping and monitoring of Natura 2000 habitats (Habitat Directive 92/43/EEC) is one the key activities to ensure protection natural in Europe. Remote sensing can help acquire high-quality maps distribution conservation status habitats, for example through classifying multispectral data. However, due high number (classes) distinguished Habitat Directive, achievable classification accuracies individual context a given landscape remain unknown. Moreover, although many recent studies have...
Abstract With the ever-improving Earth observation capabilities, variables such as tree health status, biomass storage, or stand structure are increasingly estimated through remote sensing. While many protocols of data acquisition and satellite processing in place, still novel unmanned aerial vehicles (UAVs) face some challenges during processing. height extraction seems to be a common practice, identifying individual trees measuring their crowns is quite tricky. We performed several flights...