Prof. Dr. Asia Khamzina

Research themes
  • Environmental and climate change
  • Ecosystem services
  • Sustainable use of biological resources
Research countries
  • Benin
  • Burkina Faso
  • Ghana
  • Kyrgyzstan
  • Uzbekistan
Research topic
dryland agroforestry and afforestation; land degradation; restoration of ecosystem services; carbon sequestration; tree physiology - salt tolerance, N2-fixation, water use; process-based modeling of afforestation system
Research projects

Opportunities for climate change mitigation and adaptation through afforestation of degraded lands in Central Asia (2009-2015)

FAO/IAEA coordinated research project “Landscape salinity and water management for improving agricultural productivity” (2013-2015)

ZEF/CIFOR project “Mapping of forest cover in Central Asia using satellite remote sensing” (2014-2015)

Economic and Ecological Restructuring of Land- and Water Use in the Khorezm Region (Uzbekistan) (2002-2012)

Mapping land degradation trends with medium spatial resolution optical remote sensing in arid irrigated landscapes of Central Asia (2012-2013)

Analyzing the impacts of increasing pressure of climate change, economic restraints, and political transformation on agricultural production systems in the inner Aral Sea Basin, Central Asia (2011-2013) (


(SS 2013-): Coordination of and lecture involvement in ARTS-BS2 course “Tropical crops and production systems” (4 SWS) at Agricultural Science and Resource Management in the Tropics and Subtropics (ARTS) program, the University of Bonn (in English, M.Sc. level).

(WS 2012-): Coordination of and lecture involvement in ARTS-A3 course “Agricultural Production systems in the Tropics” (4 SWS) at the ARTS program.

(SS 2010-2012): Restoration ecology of natural and land-use systems, a course of lectures and seminars (3 SWS). Lecture involvement within the course Ecological conditions for agricultural production in the (sub)tropics at the ARTS program (in English, M.Sc. level).

(SS 2009-2012): Perennial cropping and agroforestry systems in the (sub)tropics, lectures (2 SWS) within Tropical crops and production systems course at the ARTS program.

(WS 2010-): Lecture involvement within the ZEF’s Disciplinary Course on Ecology and Resources Management (in English, Ph.D. level).

(SS 2007): Agroforestry systems and methods in agroforestry research, a course of lectures (1 SWS) at the Urgench State University, Uzbekistan (in Russian, MSc level).

Additional Information:

Google Scholar citations

Involvement in journals:

On Editorial Board of Nutrient Cycling in Agroecosystems; Forest Science and Technology; Scientific Reports; Associate Editor of Change and Adaptation in Socio-Ecological Systems (CASES);

Ad hoc referee for Agriculture, Ecosystems and Environment; Agricultural and Forest Meteorology; Arid Land Research and Management; CATENA; Environmental Earth Sciences; Forest Ecology and Management; Forestry; Journal of Arid Environments; Land Degradation and Development; Quaternary International.

Tutorship of doctoral candidates

Olena Dubovyk. (2010-2013). Multi-scale targeting of land degradation in northern Uzbekistan using satellite remote sensing. (graduated magna cum laude). Thesis online

Utkur Djanibekov (2009-2014). Trees, crops and rural livelihood: Afforestation on marginal croplands in Uzbekistan. (graduated magna cum laude). Thesis online

Supervision of
ongoing doctoral theses

Florent Anguilles Noulèkoun (2014 –). Afforestation for rehabilitation of degraded cropland in Sudano-Sahelian zone of northern Benin.

Ephraim Sekyi-Annan (2013 –). Performance evaluation of reservoir-based irrigation schemes in in the Upper East Region of Ghana.

Holm Voigt (2011-). Quantifying water fluxes in mixed-species afforestation system in irrigated lowlands of Uzbekistan.

Begzod Djalilov (2011-). Agent-based modeling of policy impacts on farmers' adoption of afforestation on degraded croplands in Uzbekistan.

Supervision of
completed doctoral theses

Ph.D. theses supervised:

Tigist Araya Gessesse (2012-2016). Above- and belowground carbon stocks in semi-arid land-use systems under integrated watershed management in Gergera, Ethiopia.

Tilman Schachtsiek (2009-2014). Exploring the potential of multipurpose tree species for revegetating abandoned cropping sites in the lower Amu Darya Basin. (graduated cum laude). Ecology and Development Series 93, 124pp. ISBN 978-3-940124-46-3. Online

Sophia Baumert. (2009-2014). Life cycle assessment of carbon and energy balances in Jatropha production systems in Burkina Faso. (graduated magna cum laude). Ecology and Development Series 92, 170pp. ISBN 978-3-940124-45-6. Online

Dilfuza Djumaeva. (2006-2011). The effect of phosphorus amendments on nitrogen fixation and growth of trees on salt-affected croplands in the lower reaches of Amu Darya, Uzbekistan. (graduated magna cum laude). Ecology and Development Series 84, 139pp. ISBN 978-3-940124-36-4. Online

Professional experience

Center for Development Research (ZEF), the University of Bonn, 2009-present, junior professor; 2008-2009, senior researcher; 2006-2008, postdoctoral guest researcher;

Institute of Water Problems of Uzbekistan Academy of Sciences, 1995-2002, junior researcher

International humanitarian organization "Medecins sans Frontieres", 2001-2002, assistant to the Operational research department


Ph.D. from the University of Bonn, 2006;

M.Sc. from Tashkent Institute of Irrigation and Agricultural Mechanization Engineers, Uzbekistan, 2001


Noulèkoun F., Lamers J.P.A., Naab J., Khamzina A. 2017. Shoot and root responses of woody species to silvicultural management for afforestation of degraded croplands in the Sudano-Sahelian zone of Benin. Forest Ecology and Management, 385: 254–263. Further Information


Baumert S., Khamzina A., Vlek P.L.G. 2016. Soil carbon sequestration in Jatropha curcas systems of Burkina Faso. Land Degradation & Development, 27: 1813–1819.
Callo-Concha D., Denich M., Lamers J.P.A., Schwachula A., Hornidge A.-K., Khamzina A., Borgemeister C.. 2016. Bridging science and development: Lessons learnt from two decades of development research. Agroforestry Systems, doi:10.1007/s10457-016-0008-y.
Djalilov B., Khamzina A., Hornidge A.-K., Lamers J.P.A. 2016. Exploring constraints and incentives for the adoption of agroforestry practices on degraded cropland in Uzbekistan. Journal of Environmental Planning and Management, 59(1): 142-162.
Djanibekov U., Khamzina A. 2016. Stochastic economic assessment of afforestation on marginal land in irrigated farming system. Environmental and Resource Economics, 63(1): 95-117.
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 and Development, 27: 1831–1839.
Khamzina A., Lamers J.P.A., Martius C. 2016. Above- and belowground litter stocks and decay at a multi-species afforestation site on arid, saline soil. Nutrient Cycling in Agroecosystems, 104(2): 187-199. Further Information


Baumert S., Khamzina A. 2015. Allometric relations in Jatropha curcas production systems of Burkina Faso. Journal of Arid Environments, 120: 95-104.
Dubovyk O., Menz G., Lee A., Schellberg J., Thonfeld F., Khamzina A. 2015. SPOT-based sub-field level monitoring of vegetation dynamics: a case of irrigated croplands. Remote Sensing, 7(6): 6763-6783.


Djanibekov U. and Khamzina A. 2014. Stochastic economic assessment of afforestation on marginal land in irrigated farming system.. Environmental and Resource Economics, DOI: 10.1007/s10640-014-9843-3: in press.
Djumaeva D., Lamers J.P.A., Khamzina A., Babajanova S., Eshchanov R., Vlek P.L.G.. 2014. Nitrogen fixation by trees with P-fertilization enhances growth and carbon sequestration in degraded irrigated croplands. In: Lamers J.P.A., Khamzina A., Rudenko I., Vlek P.L.G. (eds.): Restructuring land allocation, water use and agricultural value chains: Technologies, policies and practices for the lower Amudarya region. V&R unipress. Bonn University Press. Göttingen. pp. 153-166.
Fürst C., Berry P., Genleletti D., Khamzina A., Sanfo S. 2014. Inaugural Editorial. Change and Adaptation in Socio-Ecological Systems, 1: 35-39.
Schachtsiek T., Lamers J.P.A., Khamzina A.. 2014. Early survival and growth of six afforestation species on abandoned cropping sites in irrigated drylands of the Aral Sea Basin. Arid Land Research and Management, 28: 410-427.
Tupitsa A., Lamers J.P.A., Khamzina A., Botman E., Worbes M., Martius C., Vlek P.L.G.. 2014. Adaptation of photogrammetry for tree hedgerow and windbreak assessment within the irrigated croplands of Central Asia. In: Lamers J.P.A., Khamzina A., Rudenko I., Vlek P.L.G. (eds.): Restructuring land allocation, water use and agricultural value chains: Technologies, policies and practices for the lower Amudarya region. V&R unipress. Bonn University Press. Göttingen. pp. 135-152.
Tüshaus J., Dubovyk O., Khamzina A., Menz G.. 2014. Comparison of medium spatial resolution ENVISAT-MERIS and Terra-MODIS multi-temporal time series for vegetation decline analysis: A case study in Central Asia. Remote Sensing, 6 (6): 5238-5256.


Djanibekov U., Djanibekov N., Khamzina A., Bhaduri A., Lamers J.P.A., Berg E. 2013. Impacts of innovative forestry land use on rural livelihood in a bimodal agricultural system in irrigated drylands. Land Use Policy , 35: 95-106.
Djumaeva, D., J.P.A. Lamers, A. Khamzina, P.L.G. Vlek. 2013. The benefits of phosphorus fertilization of trees grown on salinized croplands in the lower reaches of Amu Darya, Uzbekistan. Agrofor. Syst. , 87: 555–569.
Dubovyk O., Menz G., Conrad C., Lamers J.P.A., Lee A., Khamzina A. 2013. Spatial targeting of land rehabilitation: a relational analysis of cropland productivity decline in arid Uzbekistan. Erdkunde , 67: 167-181.
Dubovyk, O., G. Menz, C. Conrad, E. Kan, M. Machwitz, A. Khamzina A. 2013. Spatio-temporal analyses of cropland degradation in the irrigated lowlands of Uzbekistan using remote sensing and logistic regression modeling. Environ. Monitor. Assess., 185: 4775-4790.
Dubovyk, O., G. Menz, C. Conrad, F. Thonfeld, A. Khamzina. 2013. Object-based identification of vegetation cover decline in irrigated agro-ecosystems in Uzbekistan. Quaternary International, 311: 163-174.


Djanibekov U., Khamzina A., Djanibekov N., Lamers J.P.A. 2012. How attractive are short-term CDM forestations in arid regions? The case of irrigated croplands in Uzbekistan. Forest Policy and Economics , 21: 108-117.
Dubovyk O., Menz G., Conrad, C., Khamzina A. 2012. Object-based cropland degradation identification: a case study in Uzbekistan. Proc. SPIE 8538, Earth Resources and Environmental Remote Sensing/ GIS Applications, III: doi: 10.1117/12.974647.
Dubovyk O., Menz G., Khamzina A. 2012. Trend analysis of MODIS time-series using different vegetation indices for monitoring of cropland degradation and abandonment in Central Asia. Proc. Geoscience and Remote Sensing Symposium (IGARSS), IEEE International, 2012: 6589-6592.
Dubovyk O., Schachtsiek T., Khamzina A., Menz G. 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: 1-13.
Khamzina A., Lamers J.P.A., Vlek P.L.G. 2012. Conversion of degraded cropland to tree plantations for ecosystem and livelihood benefits. In: Martius C., Rudenko I., Lamers J.P.A., Vlek P.L.G (eds.): Cotton, Water, Salts and Soums - Economic and Ecological Restructuring in Khorezm, Uzbekistan. Springer Science+Business Media, B.V.. 235-248.


Hbirkou, C., C. Martius, A. Khamzina, J.P.A. Lamers , G. Welp, W. Amelung. 2011. Reducing topsoil salinity and raising carbon stocks through afforestation in Khorezm, Uzbekistan. J. Arid Environ. , 75: 146-155 . Further Information


Djumaeva D., Lamers J.P.A., Martius C., Khamzina A., Ibragimov N., Vlek P.L.G. 2010. Quantification of symbiotic nitrogen fixation by Elaeagnus angustifolia L. on salt-affected irrigated croplands using two 15N isotopic methods. Nutrient Cycling in Agroecosystems , 88: 329-339.
Lamers J.P.A. and Khamzina A. 2010. Seasonal quality profile and production of foliage from trees grown on degraded cropland in arid Uzbekistan, Central Asia. Journal of Animal Physiology and Animal Nutrition, 94: 77-85.
Lamers, J.P.A., C. Martius, A. Khamzina, M. Matkarimova, D. Djumaeva, R. Eshchanov. 2010. Green foliage decomposition in tree plantations established on degraded, irrigated croplands in Uzbekistan, Central Asia. Nutr. Cycl. Agroecosyst. , 87: 249-260. Further Information


Khamzina A., J.P.A. Lamers and P.L.G. Vlek. 2009. Nitrogen fixation by Elaeagnus angustifolia L. in the reclamation of degraded croplands of Central Asia. Tree Physiol., 29(6): 799-808. Further Information
Khamzina A., Sommer R., Lamers J.P.A., Vlek P.L.G. 2009. Transpiration and early growth of tree plantations established on degraded cropland over shallow saline groundwater table in northwest Uzbekistan. Agricultural and Forest Meteorology, 149: 1865-1874.


Kan, E., J.P.A., Lamers, R. Eschanov and A. Khamzina. 2008. Small-scale farmers’ perceptions and knowledge of tree intercropping systems in the Khorezm region of Uzbekistan. Forests, Trees and Livelihoods, 18: 355-372.
Khamzina A., Lamers J.P.A., Vlek P.L.G. 2008. Tree establishment under deficit irrigation on degraded agricultural land in the lower Amu Darya River region, Aral Sea Basin. Forest Ecology and Management , 255: 168-178.
Lamers J.P.A., Bobojonov I., Khamzina A., Franz J. 2008. Financial analysis of small-scale forests in the Amu Darya Lowlands of rural Uzbekistan. Forests, Trees and Livelihoods , 18: 373-386.
Lamers, J.P.A. and A. Khamzina. 2008. Fuelwood production in the degraded agricultural areas of the Aral Sea Basin, Uzbekistan. Bois et Forets des Tropiques, 297(3): 43-53. Further Information


Ibrakhimov M., Khamzina A., Forkutsa I., Paluasheva G., Lamers J.P.A., Tischbein B., Vlek P.L.G., Martius C. 2007. Groundwater table and salinity: Spatial and temporal distribution and influence on soil salinization in Khorezm region (Uzbekistan, Aral Sea Basin). Irrigation and Drainage Systems, 21: 219-236.
Ruecker G., C. Laube, A. Khamzina, A. Tupitsa and G. Strunz. 2007. Land suitability assessment approach for tree planting in Khorezm, Uzbekistan (Создание карт пригодности земель для древесных насаждений). Agriculture in Uzbekistan , 3: 24-25 .


Khamzina A. 2006. The assessment of tree species and irrigation techniques for afforestation of degraded agricultural landscapes in Khorezm, Uzbekistan, Aral Sea Basin. Doctoral thesis at Faculty of Agriculture, University of Bonn. Cuvillier Verlag, Göttingen Further Information
Khamzina A., Lamers J.P.A., Worbes M., Botman E., Vlek P.L.G. 2006. Assessing the potential of trees for afforestation of degraded landscapes in the Aral Sea Basin of Uzbekistan. Agroforestry Systems , 66: 129-141.
Khamzina, A., E.K. Botman, J.P.A. Lamers. 2006. Biodrainage capacity of tree plantations in reclamation of marginal agricultural lands in Khorezm (Использование биодренажной способности лесных насаждений для мелиорации деградированных земель в Хорезме). Agriculture in Uzbekistan, 9: 24.
Khamzina, A., J.P.A. Lamers, C. Martius, M. Worbes and P.L.G. Vlek. 2006. Potential of nine multipurpose tree species to reduce saline ground water tables in the lower Amu Darya River region of Uzbekistan. Agrofor. Syst., 68: 151-165. Further Information
Lamers J.P.A., Khamzina A., Worbes M. 2006. The analyses of physiological and morphological attributes of 10 tree species for early determination of their suitability to afforest degraded landscapes in the Aral Sea Basin of Uzbekistan. Forest Ecology and Management , 221: 249-259.


Khamzina A., Botman E., Lamers J. 2005. Evaluation and selection of woody species for phyto-remediation (Древесные породы для облесения: Оценка потенциала). Agriculture in Uzbekistan, 10: 27-28 .
Khamzina A., Kan E., Djumaeva D., Matkarimova M., Lamers J.P.A. 2005. Advantages of integrating the N2-fixing tree species in agroforestry systems in Khorezm, Uzbekistan (Агролесоводство в Хорезме: Интеграция азотофиксирующих древесных пород). Agriculture in Uzbekistan , 12: 34-35 .


Fayzieva D., Atabekov N., Usmanov I., Azizov A., Steblyanko S., Aslov S., Khamzina A. 2004. Hydrosphere and health of population in the Aral Sea Basin. In: Fayzieva D (eds.): Environmental Health in Central Asia: The Present and Future. WITPRESS. 51-100.

Asia Khamzina

Senior Researcher