Reinermann, Sophie und Asam, Sarah und Gessner, Ursula und Schucknecht, Anne und Künzer, Claudia (2021) Detection of grassland mowing events with optical satellite time series data. In: European Grassland Federation, 26, Seiten 56-58. 21. Symposium der European Grassland Federation (EGF), 2021-05-17 - 2021-05-19, Kassel, Deutschland. ISBN 978-3-00-068789-1.
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Kurzfassung
Grassland management - in particular the use intensity - determines its ecosystem services,like fodder production, carbon storage, freshwater generation and biodiversity. However, large-scale and spatially explicit information on grassland use intensity is often unknown. Here, an annual time series of high-resolution optical satellite data (Sentinel-2) for the year 2019 was used to detect mowing events in southern Germany. The pre-processed satellite time series was interpolated, smoothed and filtered and the daily Enhanced Vegetation Index (EVI) was calculated. Afterwards, mowing events were detected by applying an algorithm, which locates strong minima within the EVI time series per pixel. The results were validated by comparing them to mowing events extracted from daily pictures of grassland parcels on field scale. The number and dates of mowing events showed good results as 79% of the observed harvests were successfully detected. Mowing events were missed when the dense time series was disrupted by cloud conditions as the EVI response after mowing events usually lasted not longer than 14 days.Falsely detected mowing events were mostly related to grazing activities.
elib-URL des Eintrags: | https://elib.dlr.de/143381/ | ||||||||||||||||||||||||
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Dokumentart: | Konferenzbeitrag (Poster) | ||||||||||||||||||||||||
Titel: | Detection of grassland mowing events with optical satellite time series data | ||||||||||||||||||||||||
Autoren: |
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Datum: | Mai 2021 | ||||||||||||||||||||||||
Erschienen in: | European Grassland Federation | ||||||||||||||||||||||||
Referierte Publikation: | Ja | ||||||||||||||||||||||||
Open Access: | Nein | ||||||||||||||||||||||||
Gold Open Access: | Nein | ||||||||||||||||||||||||
In SCOPUS: | Nein | ||||||||||||||||||||||||
In ISI Web of Science: | Nein | ||||||||||||||||||||||||
Band: | 26 | ||||||||||||||||||||||||
Seitenbereich: | Seiten 56-58 | ||||||||||||||||||||||||
Herausgeber: |
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Name der Reihe: | Grassland Science in Europe | ||||||||||||||||||||||||
ISBN: | 978-3-00-068789-1 | ||||||||||||||||||||||||
Status: | veröffentlicht | ||||||||||||||||||||||||
Stichwörter: | grassland, mowing, use intensity, Sentinel-2, remote sensing, vegetation index | ||||||||||||||||||||||||
Veranstaltungstitel: | 21. Symposium der European Grassland Federation (EGF) | ||||||||||||||||||||||||
Veranstaltungsort: | Kassel, Deutschland | ||||||||||||||||||||||||
Veranstaltungsart: | internationale Konferenz | ||||||||||||||||||||||||
Veranstaltungsbeginn: | 17 Mai 2021 | ||||||||||||||||||||||||
Veranstaltungsende: | 19 Mai 2021 | ||||||||||||||||||||||||
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: | Reinermann, Sophie | ||||||||||||||||||||||||
Hinterlegt am: | 03 Aug 2021 09:46 | ||||||||||||||||||||||||
Letzte Änderung: | 24 Apr 2024 20:43 |
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