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PD Dr. Dubovyk, Olena

Scientific Coordinator

Research interests: Earth observation and Geo-information for environmental monitoring and management including:
  • Remote sensing of land surface dynamics
  • Remote sensing for land degradation and drought monitoring & assessment
  • Use of Earth observation and Geo-information for policy support and international cooperation support (SDGs, Sendai indicators etc)
  • Use of Earth observation and Geo-information for disaster risk reduction
Study Areas:
  • Africa (southern and eastern Africa, northern Africa)
  • Post-Soviet Central Asia
  • Middle East (Turkey)
  • Europe (Ukraine, Germany)
  • since 01/2015: Scientific Coordinator, ZFL
  • 01/2014 - 12/2014: Senior Researcher at Crop Science Group (INRES), University of Bonn
  • since 10/2013: Ad-hoc consultant, Economics of Land Degradation (ELD) project, ZEF
  • 2013: Doctorate, University of Bonn
  • 04/2010 - 10/2013: Junior Researcher at Centre for Development Research (ZEF)
  • 09/2008 - 03/2010: Erasmus Mundus joint M.Sc. Geo-Information Science and Earth Observation for Environmental Modelling and Management from University of Twente (Netherlands), University of Lund (Sweden), and University of Southampton (United Kingdom)
  • 2007-2008:  M.Sc. Tourism and Travel Services Management, Kyiv National Taras Shevchenko University
  • 2003-2007: B.Sc. Geography, Kyiv National Taras Shevchenko University
  • Introduction to remote sensing (PhD, MSc, BSc course level)
  • Crop ecosystem analysis and modeling - data processing and visualization (MSc course level)
  • GIS and Remote Sensing for Disaster Risk Management (MSc, BSc course level)
  • Fundamentals of Geospatial Technologies (MSc course level)
  • Einführung in Geo Information Systems (GIS) für Umweltüberwachung und –management (BSc course level)
  • Seminar Forschungspektrum Geomatik
  • Introduction to applied Remote Sensing and Geographic Information Systems (GIS)
  • Change Detection analyses using Geographic Information Systems and Remote Sensing (PhD, MSc, Eramsus Mundus, University of Bergen)
Current projects:
Closed projects:
Other activities:
  • ISPRS member
  • EARSel member
  • GEO member
Recent publications:

Peer reviewed

  • Schreier J., Ghazaryan G., Dubovyk O. (2020): Crop-specific phenomapping by fusing Landsat and Sentinel data with MODIS time series. European Journal of Remote Sensing, European Journal of Remote Sensing, 54:sup1, 47-58, DOI: 10.1080/22797254.2020.1831969
  • Ghazaryan G., Dubovyk O., Kussul N.  & J. Schellberg (2020): Local Scale Agricultural Drought Monitoring with Satellite-based Multi-sensor Time-series. GIScience & Remote Sensing. 57(5), p.511-524. 
  • Landmann T., Dubovyk O., Ghazaryan G., Kimani J.  & E.M. Abdel-Rahman (2020): Wide-area Invasive Species Propagation Mapping is Possible Using Pheno-Metric Trends. ISPRS Journal of Photogrammetry and Remote Sensing, 159, p. 1-12. 
  • Graw V., Ghazaryan G., Schreier J., Gonzalez J., Abdel-Hamid A. Walz Y., Dall K., Post J., Jordaan A. & O. Dubovyk (2020): Timing Is Everything – Drought Classification For Risk Assessment. IEEE Geoscience and Remote Sensing Letters, p. 428-433.
  • Akinyemi F., Ghazaryan G. & O. Dubovyk (2020): Assessing UN Indicators of Land Degradation Neutrality and Proportion of Degraded Land Over Botswana Using Remote Sensing Based National Level Metrics. Land Degradation & Development.
  • Dimov, D., Löw, F., Uhl, J. H., Kenjabaev, S., Dubovyk, O., Ibrakhimov, M. & C. Biradar (2019): Framework for agricultural performance assessment based on MODIS multitemporal data. Journal of Applied Remote Sensing, 13(2), 1-31, 31.
  • Dubovyk, O. (2018): Spatiotemporal Assessment of Vegetation Trends in the Post-Soviet Central Asia. In: D. Egamberdieva and M. Öztürk (Editors), Vegetation of Central Asia and Environs. Springer International Publishing, pp. 1-13.
  • Lavreniuk, M., Kussul, N., Shelestov, A., Dubovyk, O. & F. Löw (2018): Object-Based postprocessing method for crop classification maps, IGARSS 2018 - 2018 IEEE International Geoscience and Remote Sensing Symposium, pp. 7058-7061.
  • Ghazaryan, G., Dubovyk, O., Löw, F., Lavreniuk, M., Kolotii, A., Schellberg, J. & N. Kussul (2018): A rule-based approach for crop identification using multi-temporal and multi-sensor phenological metrics. European Journal of Remote Sensing 51, 511-524.
  • Löw, F., Biradar, C., Dubovyk, O., Fliemann, E., Akramkhanov, A. Narvaez Vallejo, A. & F. Waldner (2018): Regional-scale monitoring of cropland intensity and productivity with multi-source satellite image time series. GIScience & Remote Sensing 55, 539-567.
  • Zimmermann, S., Dubovyk, O., Oldenburg, C., Pape, R. & J. Löffler (2018): Lichen Cover Mapping in Southern Norway – An Analysis with Remote Sensing and GIS. GIS Science, 2
  • Abdel-Hamid, A.; Dubovyk, O.; Abou El-Magd, I. & G. Menz(2018): Mapping Mangroves Extents on the Red Sea Coastline in Egypt using Polarimetric SAR and High Resolution Optical Remote Sensing Data. Sustainability2018, 10, 646.
  • Löw, F., Prishchepov, A., Waldner, F., Dubovyk, O., Akramkhanov, A., Biradar, C. & Lamers, J. (2018): Mapping Cropland Abandonment in the Aral Sea Basin with MODIS Time Series. Remote Sensing, 10, 159.
  • Dubovyk, O., 2017. The role of Remote Sensing in land degradation assessments: opportunities and challenges. European Journal of Remote Sensing, 50, 601-613.
  • Graw, V.; Ghazaryan, G.; Dall, K.; Delgado Gómez, A.; Abdel-Hamid, A.; Jordaan, A.; Piroska, R.; Post, J.; Szarzynski, J.; Walz, Y. & O. Dubovyk, 2017. Drought Dynamics and Vegetation Productivity in Different Land Management Systems of Eastern Cape, South Africa—A Remote Sensing Perspective. Sustainability 2017, 9, 1728.
  • Santos, F., Dubovyk, O., Menz, G., 2017. Monitoring Forest Dynamics in the Andean Amazon: The Applicability of Breakpoint Detection Methods Using Landsat Time-Series and Genetic Algorithms. Remote Sensing 9(1), 68.
  • Basukala, A. K., Oldenburg, C., Schellberg, J., Sultanov, M., Dubovyk, O. 2017. Towards improved land use mapping of irrigated croplands: performance assessment of different image classification algorithms and approaches. European Journal of Remote Sensing, 50(1), 187-201.
  • Liu, D., Cao, C., Dubovyk, O., Tian, R., Chen, W., Zhuang, Q., Zhao, Y., Menz, G., in press. Using fuzzy analytic hierarchy process for spatio-temporal analysis of eco-environmental vulnerability change during 1990–2010 in Sanjiangyuan region, China. Ecological Indicators, 73, 612-625.
  • Parplies, A., Dubovyk, O., Tewes, A., Mund, J.-P., Schellberg, J., 2016. Phenomapping of rangelands in South Africa using time series of RapidEye data. International Journal of Applied Earth Observation and Geoinformation 53, 90-102.
  • Ghazaryan, G., Dubovyk, O., Kussul, N., Menz, G., 2016. Towards an Improved Environmental Understanding of Land Surface Dynamics in Ukraine Based on Multi-Source Remote Sensing Time-Series Datasets from 1982 to 2013. Remote Sensing 8, 617.
  • Dubovyk, O., Menz, G., Khamzina, A., 2016. Land suitability assessment for afforestation with Elaeagnus Angustifolia L. in degraded agricultural areas of the lower Amu Darya river basin. Land Degradation & Development 27, 1831–1839.
  • Dubovyk, O., Landmann, T., Dietz, A., Menz, G., 2016. Quantifying the Impacts of Environmental Factors on Vegetation Dynamics over Climatic and Management Gradients of Central Asia. Remote Sensing 8, 600.
  • Dubovyk, O., Menz, G., Lee, A., Schellberg, J., Thonfeld, F., and Khamzina, A.: ‘SPOT-Based Sub-Field Level Monitoring of Vegetation Cover Dynamics: A Case of Irrigated Croplands’, Remote Sensing, 2015, 7, (6), pp. 6763-6783
  • Tewes, A., Frank Thonfeld, F., Schmidt , M., Oomen, R.J., Zhu, X., Dubovyk, O., Menz, G., and Schellberg, J.: ‘Using RapidEye and MODIS data fusion to monitor vegetation dynamics in semi-arid rangelands in South Africa ’, Rempte Sensing, 2015, 7, (6), pp. 6510-6534
  • Dubovyk, O., Landmann, T., Erasmus, B.F.N., Tewes, A., Schellberg, J., 2015. Monitoring vegetation dynamics with medium resolution MODIS-EVI time series at sub-regional scale in southern Africa. International Journal of Applied Earth Observation and Geoinformation 38, 175-183,
  • Tüshaus, J., Dubovyk, O., Khamzina, A., Menz, G., 2014. Comparison of Medium Spatial Resolution ENVISAT-MERIS and Terra-MODIS Time Series for Vegetation Decline Analysis: A Case Study in Central Asia. Remote Sensing 6:5238-5256.  doi:10.3390/rs6065238
  • Landmann, T., Dubovyk, O., 2014. Spatial analysis of human-induced vegetation productivity decline over eastern Africa using a decade (2001–2011) of medium resolution MODIS time-series data. International Journal of Applied Earth Observation and Geoinformation 33:76-82.
  • Conrad, C., S. Dech, O. Dubovyk, S. Fritsch, D. Klein, F. Löw, G. Schorcht & J. Zeidler, 2014. Derivation of temporal windows for accurate crop discrimination in heterogeneous croplands of Uzbekistan using multitemporal RapidEye images. Computers and Electronics in Agriculture 103:63-74.
  • Dubovyk O., G. Menz, C. Conrad, F. Thonfeld and A. Khamzina. 2013. Object-based identification of vegetation cover decline in irrigated agro-ecosystems in Uzbekistan. Quaternary International, 311, 163-174.
  • Dubovyk O, Menz G, Conrad C., Lamers, J., Lee, A., Khamzina, A.. 2013. Spatial targeting of land rehabilitation: a relational analysis of cropland productivity decline in arid Uzbekistan. Erdkunde, 67(2):167-181. doi: 10.3112/erdkunde.2013.02.05.
  • Dubovyk O., Menz G., Conrad C., Kan E., Machwitz M., and Khamzina A. 2013. Spatio-temporal analyses of cropland degradation in the irrigated lowlands of Uzbekistan using remote sensing and logistic regression modeling. Environmental Monitoring and Assessment, 185 (6): 4775-4790.
  • Dubovyk O., T. Schachtsiek, A. Khamzina, G. Menz. 2012. Exploring the biophysical potential of dryland afforestation on degraded lands in the downstream of the Amu Darya River, Uzbekistan. Earth Bioresources and Life Quality, 1(1).
  • Dubovyk, O., Sliuzas, R., and Flacke, J. 2011. Spatio-temporal modelling of informal settlements development in Sancaktepe district, Istanbul, Turkey. ISPRS Journal of Photogrammetry and Remote Sensing, 66(2): 235-246.


  • Dubovyk, O., Landmann, T., Erasmus, B., Thonfeld, F., Schellberg, J., Menz, G., 2015. Observing vegetation dynamics at medium spatial scale: Lessons from Africa and Asia. In: Proc. IEEE International Geoscience and Remote Sensing Symposium, 27-31 July 2015, Milan.
  • Thonfeld, F., Schmidt, M., Dubovyk, O., Menz, G., 2015. On the relevance of radiometric normalization of dense Landsat time series for forest monitoring. In: Proc.IEEE International Geoscience and Remote Sensing Symposium, 27-31 July 2015, Milan.
  • Landmann, T. & Dubovyk, O. 2013. Mapping vegetation productivity dynamics and degradation trends over East Africa using a decade of medium Resolution MODIS time-series data.. IEEE InternationalGeoscience and Remote Sensing Symposium (IGARSS), 21-26 July 2013, pp. 1801-1804.,
  • Dubovyk O., Menz, G., and Khamzina, A. 2012. Trend analysis of MODIS time-series using different vegetation indices for monitoring of cropland degradation and abandonment in Central Asia. IGARSS 2012 – IEEE International Geoscience and Remote Sensing Symposium: Remote Sensing for a Dynamic Earth. July 22-27, 2012 (Munich).,
  • Dubovyk, O., Menz, G., Conrad, C., and Khamzina, A. 2012. Object-based cropland degradation identification: a case in Uzbekistan. In: Proc. SPIE International Symposium on Remote Sensing, September 24-27, 2012 (Edinburgh).,
  • Dubovyk, O., Tüshaus, J., Menz, G., and Khamzina, A.. 2012. Monitoring vegetation trends with the MERIS time series in arid irrigated landscapes of Central Asia. In: Proc. The 3rd MERIS/(A) ATSR&OLCI / SLSTR Preparatory Workshop, October 15-19 2012 (ESA-ESRIN, Frascati).
  • Dubovyk, O., Sliuzas, R., and Flacke, J. 2010. Spatio - temporal analysis of informal settlements development : a case study in Istanbul, Turkey. In: Proc. EARSeL Joint SIG Workshop: Urban - 3D - Radar - Thermal Remote Sensing and Developing Countries, 22-24 September 2010 (EARSel, Ghent) , 11 pp.
Book Chapters 

  • Graw V., Dubovyk O., Duguru M., Heid P., Ghazaryan G., Villagran De Leon J., Post J., Szarzynski J., Tsegai D. & Y. Walz (2019): Chapter 9 - Assessment, monitoring, and early warning of droughts: the potential for satellite remote sensing and beyond. In: (eds.): E. Mapedza, D. Tsegai, M. Bruntrup & R Mcleman, Current Directions in Water Scarcity Research, Elsevier, Volume 2, 2019: 115-131, ISSN 2542-7946, ISBN 9780128148204,
  • Aw-Hassan, A., Korol, V., Nishanov, N., Djanibekov, U., Dubovyk, O., & Mirzabaev, A. (2016). Economics of Land Degradation and Improvement in Uzbekistan. In E. Nkonya, A. Mirzabaev & J. von Braun (Eds.), Economics of Land Degradation and Improvement – A Global Assessment for Sustainable Development (pp. 651-682): Springer International Publishing.
  • Mirzabaev, A., Goedecke, J., Dubovyk, O., Djanibekov, U., Le, Q., & Aw-Hassan, A. (2016). Economics of Land Degradation in Central Asia. In E. Nkonya, A. Mirzabaev & J. von Braun (Eds.), Economics of Land Degradation and Improvement – A Global Assessment for Sustainable Development (pp. 261-290): Springer International Publishing.


Conference Papers:

  • Siebert, S., Cornish, N., Döll, P. Dubovyk, O., Engels, O., Eyshi-Rezaei, E., Gerdener, H., Gonzalez, J., Graw, V., Hagenlocher, M., Herbert, C., Kusche, J., Landmann, T., Meza, I., Nouri, H., Popat, E. & D. Rupp (2019): GlobeDrought – towards improved drought risk analysis and projection at global and regional scales. GRoW – Water as a global resource.

PhD Thesis

Dubovyk, Olena. 2013. Multi-scale targeting of land degradation in northern Uzbekistan using satellite remote sensing. PhD thesis. University of Bonn, Germany.

Msc Thesis

Dubovyk, O. 2010. Spatio-temporal analysis of informal settlements development. A case study of Istanbul, Turkey. Ms.c. thesis. Enschede: University of Twente, pp. 82.



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