Sie sind hier: Startseite Forschung Arbeitsgruppen Arbeitsgruppe Fernerkundung Staff PD Dr. Olena Dubovyk

PD Dr. Olena Dubovyk

Olena_Website.PNGInterim Professor

Room 332
Meckenheimer Allee 166
53115 Bonn

E-Mail: [Email protection active, please enable JavaScript.]
Phone: (+49)228/73-9700

Consultation hour: Tuesday, 1:00-2:30 p.m.


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 10/2019: Interim Professor, Department of Geography, University of Bonn
  • 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


Teaching (BSc and MSc programs)

  • 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




  • Ghazaryan, G., König, S., Eyshi Rezaei, E., Siebert, S., Dubovyk, O. (2020): Analysis of Drought Impact on Croplands from Global to Regional Scale: A Remote Sensing Approach. Remote Sensing 12, 4030.
  • 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.

  • Liu, D., Chen, W., Menz, G. & O. Dubovyk (2020): Development of integrated wetland change detection approach: In case of Erdos Larus Relictus National Nature Reserve, China. Science of The Total Environment 731, 139166.

  • Abdel-Hamid, A., Dubovyk, O., Graw, V. & K. Greve (2020): Assessing the impact of drought stress on grasslands using multi-temporal SAR data of Sentinel-1: a case study in Eastern Cape, South Africa. European Journal of Remote Sensing.

  • 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 Journal of Selected Topics in Applied Earth Observations and Remote Sensing 13, 428-433.

  • Landmann, T., Dubovyk, O., Ghazaryan, G., Kimani, J., & E.M, Abdel-Rahman (2020): Wide-area invasive species propagation mapping is possible using phenometric trends. ISPRS Journal of Photogrammetry and Remote Sensing 159, 1-12.

  • Dubovyk, O., Ghazaryan, G., Löw, F., Graw, V. & J.Schreier (2019): Drought hazard in Kazakhstan in 2000-2016: a remote sensing perspective. Environmental Monitoring and Assessment 191, 510.

  • 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.

  • Graw, V., Dubovyk, O., Duguru, M., Heid, P., Ghazaryan, G., Villagrán de León, J.C., 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: Mapedza, E., Tsegai, D., Bruntrup, M., and McLeman, R. (Eds.), Current Directions in Water Scarcity Research. Elsevier, pp. 115-131.

  • Ghazaryan, G., Dubovyk, O., Löw, F., Lavreniuk, M., Kolotii, A., Schellberg, J., Kussul, N., 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., 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.

  • Abdel-Hamid, A., Dubovyk, O., Abou El-Magd, Menz, G., 2018. Mapping Mangroves Extents on the Red Sea Coastline in Egypt using Polarimetric SAR and High Resolution Optical Remote Sensing Data. Sustainability, 10, 646.

  • Löw, F., Biradar, C., Dubovyk, O., Fliemann, E., Akramkhanov, A. Narvaez Vallejo, A., Waldner, F., 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., Löffler, J., 2018. Lichen Cover Mapping in Southern Norway – An Analysis with Remote Sensing and GIS. GIS Science, 2, 60–71.

  • 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.


  • König, S., Schultz, J., Dubovyk, O. & F. Thonfeld (2020): Assessment of Drought Effects on Forests using Non-Parametric Methods and Satellite Imagery In: Kersten, T.P. (Ed.): 40. Wissenschaftlich-Technische Jahrestagung Der DGPF in Stuttgart (Publikationen der DGPF 29), 1–12. ResearchGate


  • 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 

  • 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.

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.