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Dr. rer. nat. Victoria Lenz-Wiedemann

Kontakt

Dr. rer. nat. Victoria Lenz-Wiedemann

Südbau, Raum 1.13

Otto-Fischer-Straße 4
50674 Köln

Telefon +49-(0)221-470-1951
Fax +49-(0)221-470-4917
E-Mail victoria.lenz(at)uni-koeln.de


Website


Postdoc in the DFG-funded project
"Assimilation of hyperspectral and laser scanning data: Extension and transfer of a regional crop growth model to Northeast China"

Scientific coordinator of ICASD
(International Center for Agro-Informatics and Sustainable Development)

Best Young Researcher Paper Prize
awarded by the International Society for Ecological Modelling for the years 2009 and 2010 (Second Prize)

Research Interests

Process-based (Agro-) Ecosystem Modelling: Development, Validation and Application

Integration of Modelling, GIS and Remote Sensing

Review Activities

Ecological Modelling, Remote Sensing, International Journal of Digital Earth, Boreal Environment Research, Journal of Agricultural Science and Technology, Agriculture, International Journal of Applied Earth Observations and Geoinformation, Sensors

Academic Professional Experience

since 2010:

Postdoc in the Research Group "GIS & Remote Sensing" (Prof. G. Bareth)

2007:

PhD Thesis 

A process-based crop growth model for assessing Global Change effects on biomass production and water demand- A component of the integrative Global Change decision support system DANUBIA.

2004-2009:

Research assistant in the BMBF-funded project GLOWA-Danube:

"Integrative Techniques, Scenarios and Strategies for the Future of Water in the Upper Danube Basin"

Sub-project: "Modelling the effects of agricultural land use changes and management on water nutrient and carbon fluxes" 

2002-2009:

Research assistant at the Institute of Geography, University of Cologne

(Research Group "Hydrogeography and Climatology", Prof. K. Schneider)

1995-2001:

Graduate Studies: Geography, Biology and Soil Science

(Rheinische Friedrich-Wilhelms-Universität Bonn, Germany and Universidade de Santiago de Compostela, Spain)

Diploma Thesis (supervised by Prof. Gunter Menz) within the DFG-funded project:

"Sediment-Boden-Archive Lanzarotes als Testfall der ökologischen Sensitivität westafrikanischer Halbwüsten und Trockensteppen" (headed by Prof. Ludwig Zöller).

Theme of Diploma Thesis:

Analyse der Landbedeckung auf Lanzarote mit LANDSAT-TM-Satellitendaten

Publications

2017

Huang, S., Miao, Y., Yuan, F., Gnyp, M.L., Yao, Y., Cao, Q., Wang, H., Lenz-Wiedemann, V., and Bareth, G. (2017): Potential of RapidEye and WorldView-2 Satellite Data for Improving Rice Nitrogen Status Monitoring at Different Growth Stages. Remote Sensing 9(3), 227. doi: 10.3390/rs9030227

Zhao, Q., Brocks, S., Lenz-Wiedemann, V., Miao, Y., Zhang, F., and Bareth, G. (2017): Detecting spatial variability of paddy rice yield by combining the DNDC model with high resolution satellite images. Agricultural Systems, Vol.152, 47-57. doi: 10.1016/j.agsy.2016.11.011

Huang, S., Miao, Y., Yuan, F., Cao, Q., Ye, H., Lenz-Wiedemann, V.I.S., Khosla, R. and Bareth, G. (2017): Proximal fluorescence sensing for in-season diagnosis of rice nitrogen status. Advances in Animal Biosciences 8 (2), 343-348.

2016

Huang, S., Miao, Y., Yuan, F., Gnyp, M. L., Yao, Y., Cao, Q., Lenz-Wiedemann, V., Bareth, G. (2016): Potential improvement in rice nitrogen status monitoring using RapidEye and WorldView-2 satellite remote sensing. In: Proceedings of the 13th International Conference on Precision Agriculture (online). St. Louis, Missouri, USA. International Society of Precision Agriculture.

Lenz-Wiedemann, V.I.S., Reichenau, T.G., Klar, C.W., Schneider, K. (2016): CO2 Fluxes and Transpiration. In: Mauser, W., Prasch, M.: Regional Assessment of Global Change Impacts - The Project GLOWA-Danube, pp. 287-293. doi: 10.1007/978-3-319-16751-0_36

Lenz-Wiedemann, V.I.S., Reichenau, T.G., Klar, C.W., Schneider, K. (2016): Plant Growth and Biomass Production. In: Mauser, W., Prasch, M.: Regional Assessment of Global Change Impacts - The Project GLOWA-Danube, pp. 295-301. doi: 10.1007/978-3-319-16751-0_37

Krimly, T., Apfelbeck, J., Huigen, M., Dabbert, S., Reichenau, T.G., Lenz-Wiedemann, V.I.S., Klar, C.W., Schneider, K. (2016): Effects of Future Climate Changes on Yields, Land Use and Agricultural Incomes.  In: Mauser, W., Prasch, M.: Regional Assessment of Global Change Impacts - The Project GLOWA-Danube, pp. 609-614. doi: 10.1007/978-3-319-16751-0_70

Reichenau, T.G., Klar, C.W., Lenz-Wiedemann, V.I.S., Fiener, P., Schneider, K. (2016): Nitrate Leaching. In: Mauser, W., Prasch, M.: Regional Assessment of Global Change Impacts - The Project GLOWA-Danube, pp. 303-310. doi: 10.1007/978-3-319-16751-0_38

2015

Huang, S., Miao, Y., Zhao, G., Fei, Y., Ma, X., Tan, C., Yu, W., Gnyp, M.L., Lenz-Wiedemann, V.I.S., Rascher, U. and Bareth, G. (2015): Satellite Remote Sensing-Based In-Season Diagnosis of Rice Nitrogen Status in Northeast China. Remote Sensing 7(8), 10646-10667. doi:10.3390/rs70810646

Tilly, N., Hoffmeister, D., Cao, Q., Lenz-Wiedemann, V., Miao, Y. and Bareth, G. (2015): Transferability of Models for Estimating Paddy Rice Biomass from Spatial Plant Height Data. Agriculture 5(3), 538-560. doi:10.3390/agriculture5030538

Zhao, Q., Hütt, C., Lenz-Wiedemann, V.I.S., Miao, Y., Yuan, F., Zhang, F. and Bareth, G. (2015): Georeferencing Multi-source Geospatial Data Using Multi-temporal TerraSAR-X Imagery: a Case Study in Qixing Farm, Northeast China. PFG 2015/2, 173-185. doi: 10.1127/pfg/2015/0262 

Zhao, Q., Lenz-Wiedemann, V.I.S., Yuan, F., Jiang, R., Miao, Y., Zhang, F. and Bareth, G. (2015): Investigating within-field variability of rice from high resolution satellite imagery in Qixing Farm County, Northeast-China. ISPRS International Journal of Geo-Information 4(1), 236-261. doi:10.3390/ijgi4010236

Zhao, Q., Brocks, S., Lenz-Wiedemann, V.I.S., Miao, Y. and Bareth, G. (2015): Regional application of the site-specific biochemical process-based crop model DNDC for rice in NE-China. In: Kersten, T.P. (2015): Bridging Scales - Skalenübergreifende Nah- und Fernerkundungsmethoden, 35. Wissenschaftlich-Technische Jahrestagung der DGPF (Annual Meeting of the German Society for Photogrammetry, Remote Sensing and Geoinformation), 415-421. Cologne, Germany, 16.-18. March 2015.

2014

Gnyp, M.L., Bareth, G., Li, F., Lenz-Wiedemann, V., Koppe, W., Miao, Y., Hennig, S.D., Jia L.L., Laudien, R., Chen, X.P. and Zhang, F. (2014): Development and implementation of a multiscale biomass model using hyperspectral vegetation indices for winter wheat in the North China Plain.  J. Appl. Earth Observ. Geoinf., Vol. 33, pp.232-242. doi:10.1016/j.jag.2014.05.006

Tilly, N., Hoffmeister, D., Ciao, Q., Huang, S., Miao, Y., Lenz-Wiedemann, V. and Bareth, G. (2014): Multi-temporal Crop Surface Models: Accurate plant height measurement and biomass estimation with terrestrial laser scanning in paddy rice. J. Applied Remote Sensing 8 (1), 083671. doi: 10.1117/1.JRS.8.083671

Yu, K., Chen, X., Lenz-Wiedemann, V. and Bareth, G. (2014): Estimating leaf chlorophyll of barley at different growth stages using spectral indices to reduce soil background and canopy structure effects. ISPRS Journal of Photogrammetry and Remote Sensing 97, 58-77. doi:10.1016/j.isprsjprs.2014.08.005

2013

Bendig, J., Willkomm, M., Tilly, N., Gnyp, M.L., Bennertz, S., Qiang, C., Miao, Y., Lenz-Wiedemann, V.I.S. and Bareth, G. (2013): Very high resolution crop surface models (CSMs) from UAV-based stereo images for rice growth monitoring in Northeast China. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XL-1,W2. UAV-g2013, 4-6 September 2013, Rostock, Germany.

Tilly, N., Hoffmeister, D., Cao, Q., Lenz-Wiedemann, V.I.S., Miao, Y. and Bareth, G. (2013). Precise plant height monitoring and biomass estimation with Terrestrial Laser Scanning in paddy rice. In M. Scaioni; R. C. Lindenbergh; S. Oude Elberink; D. Schneider and F. Pirotti (Eds.), ISPRS Annals of the Photogrammetry, Remote Sensing and Spatial Information Sciences II-5/W2. Antalya. doi: 10.5194/isprsannals-II-5-W2-295-2013

2012

Lenz-Wiedemann, V.I.S., Schneider, K., Miao, Y., Bareth, G. (2012): Development of a regional crop growth model for Northeast China. In: YANG, Z. and CHEN, B. (eds): 18th Biennial ISEM Conference on Ecological Modelling for Global Change and Coupled and Natural System, 20-23 Sept. 2011, Beijing, China. Procedia Environmental Sciences 13, 1946-1955. doi:10.1016/j.proenv.2012.01.188

Gnyp, M.L., Yao, Y., Yu, K., Huang, S., Lenz-Wiedemann, V.I.S., Miao, Y. and Bareth, G. (2012): Hyperspectral analysis of rice phenological stages in northeast China. ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. I-7: 77-82. XXII ISPRS Congress, Aug. 25-Sep. 1, 2012, Melbourne, Australia. doi:10.5194/isprsannals-I-7-77-2012

Tilly, N., Hoffmeister, D., Liang, H., Cao, Q., Liu, Y., Lenz-Wiedemann, V.I.S., Miao, Y. and Bareth, G. (2012): Evaluation of terrestrial laser scanning for rice growth monitoring. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B7. XXII ISPRS Congress, Aug. 25-Sep. 1, 2012, Melbourne, Australia.

Yu, K., Lenz-Wiedemann, V.I.S., Leufen, G., Hunsche, M., Noga, G., Chen, X. and Bareth, G. (2012): Assessing hyperspectral vegetation indices for estimating leaf chlorophyll concentration of summer barley. ISPRS Ann. Photogramm. Remote Sens. Spatial Inf. Sci. I-7: 89-94. XXII ISPRS Congress, Aug. 25-Sep. 1, 2012, Melbourne, Australia. doi:10.5194/isprsannals-I-7-89-2012

Zhao, Q., Brocks, S., Lenz-Wiedemann, V.I.S., Miao, Y., Jiang, R., Chen, X., Zhang, F. and Bareth, G. (2012): 
Implementation of an Agricultural Environmental Information System (AEIS) for Sanjiang Plain, NE-China. International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences, Volume XXXIX-B8. XXII ISPRS Congress, Aug. 25-Sep. 1, 2012, Melbourne, Australia.

2011

Lenz-Wiedemann, V.I.S., Bareth, G. (eds) (2011): Proceedings of the Workshop on Remote Sensing Methods for Change Detection and Process Modelling, 18-19 November 2010, University of Cologne, Germany. Kölner Geographische Arbeiten 92.

2010

Lenz-Wiedemann, V.I.S., Klar, C.W., Schneider, K. (2010): Development and test of a crop growth model for application within a Global Change decision support system. Ecological Modelling 221, 314-329.

Gnyp, M.L., Yao, Y., Miao, Y., Yu, K., Huang, S., Dornauf, E., Hütt, C., Lenz-Wiedemann, V.I.S., Laudien, R., Chen, X., and Bareth, G. (2010): Evaluating within-field rice growth variability using Quickbird and Ikonos images in Northeast China. The 3rd ISDE Digital Earth Summit, June 12-14, 2010, Nessebar, Bulgaria, CD Proceedings, ISBN:978-954-724-039-1, 9 p.

2009

Lenz-Wiedemann, V.I.S., Reichenau, T.G., Klar, C.W., Schneider, K. (2009): CO2-Flüsse und Transpiration. In: GLOWA-Danube-Projekt, Universität München, LMU (Hrsg.). Global Change Atlas, Einzugsgebiet Obere Donau. München.

Lenz-Wiedemann, V.I.S., Reichenau, T.G., Schneider, K. (2009): Pflanzenwachstum und Biomasseproduktion. In: GLOWA-Danube-Projekt, Universität München, LMU (Hrsg.). Global Change Atlas, Einzugsgebiet Obere Donau. München.

Klar, C.W., Lenz-Wiedemann, V.I.S., Reichenau, T.G., Schneider, K. (2009): Nitratauswaschung. In: GLOWA-Danube-Projekt, Universität München, LMU (Hrsg.). Global Change Atlas, Einzugsgebiet Obere Donau. München.

Krimly, T., Apfelbeck, J., Huigen, M., Dabbert, S., Reichenau, T.G., Lenz-Wiedemann, V.I.S., Klar, C.W., Schneider, K. (2009): Ertragsentwicklung und Landnutzungsänderung unter Klimawandel. In: GLOWA-Danube-Projekt, Universität München, LMU (Hrsg.). Global Change Atlas, Einzugsgebiet Obere Donau. München.

2008

Lenz-Wiedemann, V.I.S., Klar, C.W., Schneider, K. (2008): Assessing ecohydrological impacts of crops in a catchment area. In: Breckling, B., Reuter, H. & R. Verhoeven (Hrsg.): Implications of GM-Crop Cultivation at Large Spatial Scales. Theorie in der Ökologie 14, pp. 71-75, Frankfurt.

Klar, C.W., Fiener, P., Neuhaus, P., Lenz-Wiedemann, V.I.S., Schneider, K. (2008): Modelling of soil nitrogen dynamics within the decision support system DANUBIA. Ecological Modelling 217, 181-196.

2007

Lenz-Wiedemann, V.I.S., Klar, C.W., Neuhaus, P., Schneider, K. (2007): Simulating future crop water demand in the Upper Danube Basin. In: Challenges for ecological modelling in a changing world: Global Changes, Sustainability and Ecosystem Based Management. Proceedings of the 6th International European Conference on Ecological Modelling, November 27-30, 2007, Trieste, p. 307.

Klar, C.W., Lenz-Wiedemann, V.I.S.,Neuhaus, P., Schneider, K. (2007): Assessing the impact of agricultural adaptation scenarios on groundwater quality in the Upper Danube basin. In: Challenges for ecological modelling in a changing world: Global Changes, Sustainability and Ecosystem Based Management. Proceedings of the 6th International European Conference on Ecological Modelling, November 27-30, 2007, Trieste, p. 271.

Lenz, V.I.S. (2007): A process-based crop growth model for assessing Global Change effects on biomass production and water demand - A component of the integrative Global Change decision support system DANUBIA - . PhD thesis, University of Cologne, 180 pp.

2006

Lenz, V.I.S. (2006): Analyse der Landbedeckung auf Lanzarote mit LANDSAT-TM- Satellitendaten. In: Zöller, L. & H. von Suchodoletz (Hrsg.), Östliche Kanareninseln - Natur, Mensch, Umweltprobleme. Bayreuther Geographische Arbeiten, Band 27, S. 131-154, Bayreuth.

Lenz, V.I.S., Klar, C., Fiener, P., Schneider, K., Tenhunen, J.D., Scharfenberg, H.-J. (2006): Pflanzenwachstum und Biomasseproduktion. In: GLOWA-Danube-Projekt, Universität München (LMU) (Hrsg.), Global Change Atlas, Einzugsgebiet Obere Donau (1. Lieferung). München.

Tenhunen, J.D., Scharfenberg, H.-J., Lenz, V.I.S., Klar, C., Fiener, P., Schneider, K. (2006): CO2-Flüsse und Transpiration. In: GLOWA-Danube-Projekt, Universität München (LMU) (Hrsg.), Global Change Atlas, Einzugsgebiet Obere Donau (1. Lieferung). München.

2005

Lenz, V., Kohring, K., Schneider, K. (2005): Deriving plant parameters from remote sensing data for assimilation into crop growth models. In: Erasmi, S., Cyffka, B., Kappas, M. (2005): Remote Sensing & GIS for Environmental Studies: Applications in Geography. Göttinger Geographische Abhandlungen Vol. 113, pp. 101-108, Göttingen.

Schneider, K., Lenz, V. (2005): The use of remote sensing data in a spatially-distributed land surface process model. In: Proceedings of the Fourth International Symposium on Spatial Data Quality (ISSDQ 05), 25-26 August 2005, Beijing, China.

Strasser, U., Mauser, W., Ludwig, R., Schneider, K., Lenz, V., Barthel, R., Sax, M. (2005): GLOWA-Danube: Integrative Global Change Scenario Simulations for the Upper Danube Catchment - First Results. In: Papers of the International Conference on Headwater Control VI: Hydrology, Ecology and Water Resources in Headwaters. IAHS, 20-23 June 2005, Bergen, Norway.