[1] Ahmadi, H. (2003). The final report of compiling a comprehensive service plan and methodology of indicators and indices of desertification potential assessment in Iran, College of Agriculture & Natural Resources, Faculty of Natural Resources, Department of Rehabilitation of Arid and Mountainous Regions, University of Tehran.
[2] Ahmadi, H. (2003). The final report of calibration of desertification potential assessment in Iran, College of Agriculture & Natural Resources, Faculty of Natural Resources, Department of Rehabilitation of Arid and Mountainous Regions, University of Tehran.
[3] Albaladejo, M., Chisci, P., Gabriels, G., Rubio, V. and Stocking, N. (1988). Soil Degradation And Its Imapct On Desertification: A Research Design For Mediterranean Environments, Soil Technology, 1, 169-174.
[4] Cammeraat, L.H. and Imeson, A.C. (1998). Deriving indicators of soil degradation from soil aggregation studies in southeastern Spain and southern France, Geomorphology, 23, 307-321.
[5] De Paz, J.M., Sa´nchez, J. and Visconti, F. (2006). Combined use of GIS and environmental indicators for assessment of chemical, physical and biological soil degradation in a Spanish Mediterranean region, Journal of Environmental Management, 79, 150-162.
[6] Diodato, N. and Ceccarelli, M. (2004). Multivariate indicator Kriging approach using a GIS to classify soil degradation for Mediterranean agricultural lands, Ecological Indicators, 4, 177-187.
[7] Geeson, N.A., Brandt, C.J. and Thornes, J.B. (2002). Mediterranean Desertification: A Mosaic of Processes and Responses, John Wiley & Sons press.
[8] Geist, H. and Lambin, E.F. (2004). Dynamic Causal Patterns of Desertification, BioScience, 54(9): 817- 830.
[9] McDonagh, J., Bunning, S., McGarry, D., Liniger, H. and Rioux, J. (2009). Field Manual for Local Level Land Degradation Assessment in Drylands; LADA-L Part 1: Methodological Approach, Planning and Analysis, LADA, Fao.
[10] McDonagh, J., Bunning, S., McGarry, D., Liniger, H. and Rioux, J. (2009). Field Manual for Local Level Land Degradation Assessment in Drylands; LADA-L Part 2: Local Assessment: Tools and Methods for Fieldwork, LADA, Fao.
[12] Oldeman L.R. (1988). Guidelines for General Assessment of the Status of Human-Induced Soil Degradation, Global Assessment of Soil Degradation (GLASOD), Work. Pap. 88/04, ISRIC, Wageningen.
[13] Oldeman, L.R., Hakkeling, R.T.A. and Sombroek, W.G. (1991). World map of the status of human-induced soil degradation: an explanatory note, Wageningen: International Soil Reference and Information Centre; Nairobi: United Nations Environment Programme.
[14] Omuto, C.T. (2008). Assessment of soil physical degradation in Eastern Kenya by use of a sequential soil testing protocol, Agriculture, Ecosystems and Environment, 128, 199-211.
[15] Puigdefabregas, J. (1995). Desertification: Stress beyond resilience, exploring a unifying process structure, Ambio, 24, 311-313.
[16] Ravi, S., Breshears, D.D., Huxman, T.E. and D'Odorico, P. (2010). Land degradation in drylands: Interactions among hydrologic–aeolian erosion and vegetation dynamics, Geomorphology, 116, 236-245.
[17] Rodrı´guez, A.R, Mora, J.L., Carmen, A. and Bordon, J. (2005). Plant succession and soil degradation in desertified areas (Fuerteventura, Canary Islands, Spain), Catena, 59, 117-131.
[18] Ruiz-Sinoga, J,.D. and Romero Diaz, A. (2010). Soil degradation factors along a Mediterranean pluviometric gradient in Southern Spain, Geomorphology, 118, 359-368.
[19] Sha-Sha, F., Pei-Jun, L., Qian, F., Xiao-Jun, L., Peng, L., Yue-Bing, S. and Yang, C. (2011). Soil Quality Degradation in a Magnesite Mining Area, Pedosphere, 21(1): 98-106.
[20] Shepherd, G. (2000). Visual Soil Assessment, Volume 1, Field guide for cropping and pastoral grazing on flat to rolling country, horizons.mw & Landcare Research, Palmerston North, New Zealand.
21] Snakin, V.V., Krechetov, P.P., Kuzovnikova, T.A., Alyabina, I.O., Gurov, A.F. and Stepichev, A.V. (1996). The system of assessment of soil degradation, Soil Technology, 8 , 331-343.
[22] Stocking, M. and Murnaghan, N. (2001). A Handbook for the Field Assessment of Land Degradation, Earthscan Publications, USA.
[23] UNEP-DC/PAC. (1990). In: Desertification revisited, Ed.R.S. Odingo. pp.3-5. UNEP/DC-PAC, Nairobi, Kenya.
[24] Warren, A. (1996). Desertification, The Physical Geography of Africa, Adams, W.M., Goudie, A.S. and Orme, A.R. (Editors), Oxford University Press.
[25] Yanda, P.Z. (2000). Use of soil horizons for assessing soil degradation and reconstructing chronology of degradation processes: the case of Mwisanga Catchment, Kondoa, Central Tanzania Geomorphology, 34, 209-225.