The Methodology for Identifying Secondary Succession in Non-Forest Natura 2000 Habitats Using Multi-Source Airborne Remote Sensing Data
| Autor: | W. Ostrowski, Hubert Piórkowski, Krzysztof Bakuła, Jakub Charyton, Aleksandra Radecka, Katarzyna Osińska-Skotak, Dorota Michalska-Hejduk |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Secondary succession
010504 meteorology & atmospheric sciences Relation (database) Computer science species mapping Science 0211 other engineering and technologies multisensor classification habitat threats 02 engineering and technology Ecological succession 01 natural sciences secondary succession monitoring hyperspectral imagery LiDAR data media_common.cataloged_instance European union 021101 geological & geomatics engineering 0105 earth and related environmental sciences Remote sensing media_common Random forest Identification (information) Photogrammetry General Earth and Planetary Sciences Natura 2000 |
| Zdroj: | Remote Sensing; Volume 13; Issue 14; Pages: 2803 Remote Sensing, Vol 13, Iss 2803, p 2803 (2021) |
| ISSN: | 2072-4292 |
| DOI: | 10.3390/rs13142803 |
| Popis: | The succession process of trees and shrubs is considered as one of the threats to non-forest Natura 2000 habitats. Poland, as a member of the European Union, is obliged to monitor these habitats and preserve them in the best possible condition. If threats are identified, it is necessary to take action—as part of the so-called active protection—that will ensure the preservation of habitats in a non-deteriorated condition. At present, monitoring of Natura 2000 habitats is carried out in expert terms, i.e., the habitat conservation status is determined during field visits. This process is time- and cost-intensive, and it is subject to the subjectivism of the person performing the assessment. As a result of the research, a methodology for the identification and monitoring of the succession process in non-forest Natura 2000 habitats was developed, in which multi-sensor remote sensing data are used—airborne laser scanner (ALS) and hyperspectral (HS) data. The methodology also includes steps required to analyse the dynamics of the succession process in the past, which is done using archival photogrammetric data (aerial photographs and ALS data). The algorithms implemented within the methodology include structure from motion and dense image matching for processing the archival images, segmentation and Voronoi tessellation for delineating the spatial extent of succession, machine learning random forest classifier, recursive feature elimination and t-distributed stochastic neighbour embedding algorithms for succession species differentiation, as well as landscape metrics used for threat level analysis. The proposed methodology has been automated and enables a rapid assessment of the level of threat for a whole given area, as well as in relation to individual Natura 2000 habitats. The prepared methodology was successfully tested on seven research areas located in Poland. |
| Databáze: | OpenAIRE |
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