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Exploring the potential of remote sensing application to assess locust damage: A case study of the first and second wave locust invasion in Laikipia and Samburu counties, Kenya.

Waweru, John Wachira (2022) Exploring the potential of remote sensing application to assess locust damage: A case study of the first and second wave locust invasion in Laikipia and Samburu counties, Kenya. Masterarbeit, United Nations University.

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Kurzfassung

The 2020-2021 desert locust invasion in Kenya caused massive agricultural damage, threatening food security in Arid and Semi-Arid Lands. Control and assessment of the damage are complicated to begin with and were further hindered by the current travel restrictions in place due to the Covid-19 pandemic. To contribute to ground-based data, remote sensing analysis offers an opportunity to assess the damage situation from a different viewpoint. It offers the advantage of a greater spatial scale analysis covering areas that would be inaccessible with ground-based observation. This thesis addresses the feasibility of using remote sensing for desert locust damage assessment studies in two Kenyan counties: Laikipia and Samburu. The computation of the impact by desert locusts was executed through the development of a Normalized Difference Vegetation Index (NDVI) change detection model using Sentinel-2 Surface Reflectance (SR) to compute the before and after invasion NDVI difference image. The NDVI change was computed to show areas that were damaged after the desert locust invasions in 2020 and 2021. The results of the model showed that Samburu county was adversely affected by both desert locust invasions correlating with ground-based household assessments. Laikipia recorded the highest cropland Land Use and Land Cover (LULC) damage after both the first and second invasion exacerbating food insecurity in the county. For further research, the developed model could be enhanced by ground-based data in the future.

elib-URL des Eintrags:https://elib.dlr.de/144754/
Dokumentart:Hochschulschrift (Masterarbeit)
Titel:Exploring the potential of remote sensing application to assess locust damage: A case study of the first and second wave locust invasion in Laikipia and Samburu counties, Kenya.
Autoren:
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iDORCID Put Code
Waweru, John WachiraNICHT SPEZIFIZIERTNICHT SPEZIFIZIERTNICHT SPEZIFIZIERT
Datum:Januar 2022
Referierte Publikation:Nein
Open Access:Nein
Seitenanzahl:105
Status:veröffentlicht
Stichwörter:damage assessment, desert locust, GEE, NDVI, Laikipia, Samburu
Institution:United Nations University
Abteilung:Institute for Environment and Human Security
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: Klein, Igor
Hinterlegt am:10 Jan 2022 10:51
Letzte Änderung:10 Jan 2022 10:51

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