Thonfeld, Frank und Gessner, Ursula und Holzwarth, Stefanie und Kriese, Jennifer und Huth, Juliane und Kuenzer, Claudia (2022) Canopy cover loss in Germany’s forests after the 2018-2020 drought years. Forest Disturbances and Ecosystem Dynamics in a Changing World Symposium, 2022-09-19 - 2022-09-22, Berchtesgaden, Deutschland.
Dieses Archiv kann nicht den Volltext zur Verfügung stellen.
Kurzfassung
Central Europe was hit by several unusually strong periods of drought and heat between 2018 and 2020. These droughts affected forest ecosystems. While the annual tree crown condition assessments report generally rather bad conditions of the four dominant tree species in Germany, namely spruce, pine, beech and oak, many other tree species also show signs of severe damage. Cascading effects of drought and heat with insect infestations were fatal to vast forest areas in Germany, particularly in spruce stands. We present a first assessment of canopy cover loss in Germany since January 2018. Our approach makes use of dense Sentinel-2 and Landat-8 time series. We computed the disturbance index (DI) from the Tasseled Cap components brightness, greenness, and wetness. Using quantiles, we generated monthly DI composites and calculated anomalies to a reference period (2017). After applying a threshold, we were able to determine the date of canopy cover loss for all pixels where anomalies were recorded until the end of the observation period. From the resulting map, we calculated canopy cover loss statistics for administrative entities. Our results show canopy cover loss of more than 400,000 ha for Germany from 2018-2020 with large regional differences. However, clear-cutting of damaged trees continued in 2021 at exceptional high rates and reached 500,000 ha already in April 2021. The losses were largest in central Germany and reach up to two thirds of coniferous forest loss in some districts. Our map has high spatial (10 m) and temporal (monthly) resolution.
elib-URL des Eintrags: | https://elib.dlr.de/190699/ | ||||||||||||||||||||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Dokumentart: | Konferenzbeitrag (Poster) | ||||||||||||||||||||||||||||
Titel: | Canopy cover loss in Germany’s forests after the 2018-2020 drought years | ||||||||||||||||||||||||||||
Autoren: |
| ||||||||||||||||||||||||||||
Datum: | 2022 | ||||||||||||||||||||||||||||
Referierte Publikation: | Nein | ||||||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||||||
Stichwörter: | Tree Canopy Cover Loss, Germany, Forest, Time Series, Optical Remote Sensing, Sentinel-2, Landsat | ||||||||||||||||||||||||||||
Veranstaltungstitel: | Forest Disturbances and Ecosystem Dynamics in a Changing World Symposium | ||||||||||||||||||||||||||||
Veranstaltungsort: | Berchtesgaden, Deutschland | ||||||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||||||
Veranstaltungsbeginn: | 19 September 2022 | ||||||||||||||||||||||||||||
Veranstaltungsende: | 22 September 2022 | ||||||||||||||||||||||||||||
HGF - Forschungsbereich: | Luftfahrt, Raumfahrt und Verkehr | ||||||||||||||||||||||||||||
HGF - Programm: | Raumfahrt | ||||||||||||||||||||||||||||
HGF - Programmthema: | Erdbeobachtung | ||||||||||||||||||||||||||||
DLR - Schwerpunkt: | Raumfahrt | ||||||||||||||||||||||||||||
DLR - Forschungsgebiet: | R EO - Erdbeobachtung | ||||||||||||||||||||||||||||
DLR - Teilgebiet (Projekt, Vorhaben): | R - Fernerkundung u. Geoforschung | ||||||||||||||||||||||||||||
Standort: | Oberpfaffenhofen | ||||||||||||||||||||||||||||
Institute & Einrichtungen: | Deutsches Fernerkundungsdatenzentrum > Dynamik der Landoberfläche | ||||||||||||||||||||||||||||
Hinterlegt von: | Thonfeld, Dr. Frank | ||||||||||||||||||||||||||||
Hinterlegt am: | 26 Nov 2022 17:19 | ||||||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:51 |
Nur für Mitarbeiter des Archivs: Kontrollseite des Eintrags