Publicação
How does Lidar data support forest ecosystem rewetting: comparison between official airborne lidar with high-resolution UAS Lidar
| datacite.subject.fos | Ciências Naturais::Ciências da Computação e da Informação | pt_PT |
| dc.contributor.advisor | Lehmann, Jan | |
| dc.contributor.advisor | Neuenkamp, Lena | |
| dc.contributor.advisor | Granell-Canut, Carlos | |
| dc.contributor.author | Duarte, Gabriel dos Santos | |
| dc.date.accessioned | 2024-04-10T13:20:11Z | |
| dc.date.available | 2024-04-10T13:20:11Z | |
| dc.date.issued | 2024-02-02 | |
| dc.description | Dissertation submitted in partial fulfilment of the requirements for the Degree of Master of Science in Geospatial Technologies | pt_PT |
| dc.description.abstract | Nowadays many efforts are being made to mitigate the impacts of climate change in our society and in natural environments, such as the recuperation of ecosystems impacted by human activities. Rewetting is an ecological restoration process that aims to recover water supplies in dried wetting areas, recovering biodiversity and reducing CO2 emissions. Precise information from the current water channels is required for rewetting to create hydrologic models and analyze the effects of closing the channels on water runoff. Remote Sensing using LiDAR (Light Detection and Ranging) technology can efficiently collect information from water channels and create precise DTM (Digital Terrain Model) to support hydrologic modelling. Airborne LiDAR has been used for many decades but now with the advancement of UAS (Unmanned Aerial System) technology new potentialities are appearing for monitoring and data acquisition, improving the spatial and temporal resolution. However, it is necessary to evaluate if this new technology can substitute the official aerial surveys. The objective of this thesis is to evaluate the potential differences between official Airborne LiDAR and high-resolution LiDAR using UAS to support forest ecosystem rewetting, comparing the extraction of water drainages and hydrological models. Results show small differences between these two datasets, probably created by the temporal difference between them or the increased spatial resolution, revealing more details with UAS that were not detected in the Airborne flight. This study concludes that UAS can collect high-quality data comparable to traditional aerial surveys, enabling more accessible and cost-effective data collection for ecosystem restoration and monitoring. | pt_PT |
| dc.identifier.tid | 203572505 | pt_PT |
| dc.identifier.uri | http://hdl.handle.net/10362/166041 | |
| dc.language.iso | eng | pt_PT |
| dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt_PT |
| dc.subject | UAS | pt_PT |
| dc.subject | LiDAR | pt_PT |
| dc.subject | Rewetting | pt_PT |
| dc.subject | Digital Terrain Models | pt_PT |
| dc.title | How does Lidar data support forest ecosystem rewetting: comparison between official airborne lidar with high-resolution UAS Lidar | pt_PT |
| dc.type | master thesis | |
| dspace.entity.type | Publication | |
| rcaap.rights | openAccess | pt_PT |
| rcaap.type | masterThesis | pt_PT |
| thesis.degree.name | Mestrado em Tecnologias Geoespaciais | pt_PT |