Professor Laurence "Larry" Lewis received his Ph.D from Northwestern University in geography, concentrating in geomorphology and hydrology. Recent research focuses on agriculture and land degradation, and environmental monitoring with particular interest on the interactions between the physical, human, and economic spheres; short-term versus long-term perspectives. This includes the development of some models to explore physical environmental problems such as two new RUSLE module to estimate soil loss and now incorporated in IDRISI. One current research project is examining land use change, and the resulting spatial and quantity changes in erosion and deposition patterns, in an agricultural river basin in northeastern Morocco.
Awards and Memberships
National Academy of Sciences Fellowship
National Honor Award, Soil and Water Conservation Society
Southern New England Honor Award, Southern New England Chapter
Lewis, L.A., El Garouani, A., Chen, H., Tribak, A. et Abahrour, M. (2009) Evaluation du bilan d’érosion et de depot des sols au pré-rif(Maroc) en utilisant le modèle RUSLE, la télédétection et analyse spatial, La Revue Internationale de Géomatique; v.19,n. 3pp. 303-319.
Lewis, L.A., Chen, H., & Garouani, A. (2008); Modeling Soil Erosion and Deposition within a Mediterranean Mountainous Environment Utilizing Remote Sensing and GIS. Wadi Tlata, Morocco; Geographica Helvetica-Schweizerische Zeitschrift fur Geographie; v.63, n.1 pp. 36-47.
Lewis, L.A. and Johnson, D.L., Land Degradation: Creation and Destruction 2nd edition, 2006, Rowman & Littlefield, Lanham (MD) and Oxford (UK)
Lewis, L.A., G. Verstraeten, and H. Zhu, RUSLE applied in a GIS framework: Calculating the LS factor and deriving homogeneous patches for estimating soil loss, 2005, International Journal of Geographical Information Science, v. 19, no. 7, 809-829.
Lewis, L.A. and Johnson, D.L., Land Degradation: Creation and Destruction, 1995, Blackwell Publications, Oxford (UK)
Lewis, L.A. and Berry, L., African Environments and Resources, 1988, Unwin Hyman Ltd., Boston and London.
Lewis, L.A., 2003 Part 3 - Natural Resources, Geography and Resources of Africa, in The Future of Africa, eds. D.C. Major and J.S Major, The New York Society for International Affairs, New York.
Lewis, L.A. and Nyamulinda, V., 1996, "The critical role of human activities in land degradation in Rwanda," Land Degradation & Development, v. 7, pp. 47-55.
Lewis, L.A. and Clay, D.C., 1996, Chapter 11 - Land Use, Soil Loss, and Sustainable Agriculture in Rwanda, in Case Studies in Human Ecology, eds. D. G. Bates and S. H. Lees, Plenum Press, New York and London.
Lewis, L.A.,1994, Environmental Data Needs for Assessing Agricultural Land Degradation in the Rwandan Context, Paper 10, Rwanda Society-Environment Project, Department of Geography and Center for Advanced Study of International Development, Michigan State University, East Lansing, MI
Lewis, L. A., 1992 "Accelerated Soil Loss Resulting from Some Conservation Practices: Terracing in Rwanda," Journal of Land Degradation and Reclamation, v. 3, n 3, pp. 241-46.
Lewis, L. A., 1991 "Agriculture, Environment, and Soil Loss in Western Rwanda," Zeit. für Geomorphologie, Suppl.BD. 83, pp. 23-28.
Lewis, L. A.,Berry, L.,& Williams, C., 1991, "The Changing Status of the Land Resource Base in Highland East Africa," in The Earth Transformed, Turner, B.L., and Myers, W. eds., The Cambridge University Press, New York and Cambridge, pp. 533-42.
Lewis, L. A. and Nyamulinda, V., 1989, "Les Relations Entre les des Cultures et les Unites Topographiques dans les Regions Agricoles de la Bordure du Lac Kivu et de l'Impara au Rwanda: Quelques Strategies pour une Agriculture Soutenue," Bulletin Agricole Rwanda, 3, Juillet, pp.143-49.