@incollection{, A110000F6BDE02DA483FF9B4B957FBAC , author={{AlkaliMohammed} and {A.TOgah} and {I.MAnzku} and {Bayero University, Kano}}, journal={{Global Journal of Human Social Sciences}}, journal={{GJHSS}}2249-460X0975-587X10.34257/GJHSS, address={Cambridge, United States}, publisher={Global Journals Organisation}21389102 } @book{b0, , title={{Introduction to Soil and Vegetation}} , author={{ IAbaje }} , year={2007} , publisher={Personal Touch} } @book{b1, , title={{Introduction to Geography}} , author={{ MAAbegunde } and { AAdegoke } and { GOnwumere } and { ADahiru }} , year={1999} , publisher={Longman Nigeria Plc} , address={Ikeja, Lagos} } @incollection{b2, , title={{Where along a river's length will vegetation most effectively stabilize stream banks?}} , author={{ BAbernethy } and { IDRutherfurd }} , journal={{Geomorphology}} 23 1 , year={1998} } @book{b3, , title={{Impact of Soil Erosion on Production System}} , author={{ Abegunde }} , year={1991} , publisher={South Western Nigeria} } @incollection{b4, , title={{Factor analysis of drainage basin properties evidence for a stream abstraction accompanying the degradation of relief}} , author={{ AAbraham }} , journal={{Water Resources Research}} 8 , year={2003} } @incollection{b5, , title={{Climate II}} , author={{ AAAdebayo }} , booktitle={{Adamawa State in Maps}} , editor={ TukvrAdebayo } Yola , publisher={Paraclete Publishers} , year={1999} } @incollection{b6, , title={{Precipitation, Evapotranspiration and the Ecological zones in Nigeria}} , author={{ DOAdefolalu }} , journal={{Theory. Appl. Climatology}} 39 , year={1989} } @book{b7, , title={{West African Soils London}} , author={{ PNAhn }} , year={1970} , publisher={Oxford University Press} 332 } @book{b8, , title={{The parameters of Infiltration Equation of Urban Land Surfaces, An Unpublished Ph}} , author={{ FAkintola }} , year={1974} , address={Nigeria} Dept. of Geography, University of Ibadan , note={D Thesis} } @incollection{b9, , title={{The hydrological consequences of urbanization: A case study of Ibadan city}} , author={{ FAkintola }} , booktitle={{Urbanization processes and problems in Nigeria}} , editor={ POSada JSOguntoyinbo } , publisher={Ibadan University press} , year={1978} } @incollection{b10, , title={{Effect of Gully Erosion on Agricultural Land Use in Lafia Nasarawa State}} , author={{ IMAnzaku }} , journal={{Unpublished M.Sc. Dissertation, Dept. of Geography}} , year={2015} Nasarawa State University } @book{b11, , title={{The Good Earth Inaugural Lecture}} , author={{ OAreola }} , year={1990} University of Ibadan } @book{b12, , title={{The Essential of Soils Study}} , author={{ Areola } and { AFaniran }} , year={1999} , publisher={Heinemann. London} } @incollection{b13, , title={{Landform examples from Nigeria: A Gully}} , author={{ OAreola } and { AFaniran }} , journal={{The Nigerian Geographical Journal}} 17 , year={2000} } @book{b14, , title={{Soil erosion and Degradation in South-Eastern Nigeria in Relation to Biophysical and Socio-economic factors}} , author={{ MArmon }} , year={1984} , address={Ibadan} University of Ibadan , note={Unpublished Ph. D Thesis} } @book{b15, , title={{Swrrb -A Basin Scale Simulation Model for Soil and Water Resources Management}} , author={{ JGArnold } and { JRWilliams } and { RHGriggs } and { NBSammons }} , year={1990} , publisher={Texas, A and M Press} } @incollection{b16, , title={{River width adjustment. I: Processes and mechanisms}} , author={{ Asce }} , journal={{Journal of Hydraulic Engineering}} 124 9 , year={1998} } @incollection{b17, , title={{River Width Adjustment. I: Processes and Mechanisms}} , author={{ Asce }} , journal={{Journal of Hydraulic Engineering}} 124 8 , year={1998} } @book{b18, , title={{Quantitative Techniques for Geographers}} , author={{ BAyeni }} , year={1994} , address={Ibadan} , note={Research Support Service} } @book{b19, , title={{Introduction to Climatology for the Tropics}} , author={{ JOAyoade }} , year={1983} , note={Abi prints and park} } @book{b20, , author={{ Ayuba }} , title={{Central Nigeria Project on a Soil Conservation}} , year={2005} } @book{b21, , title={{Erosion and Land Degradation}} , author={{ Ahmad }} , year={1990} , address={Northern Nigeria} } @book{b22, , title={{Effect of Gullies}} , author={{ Ahmad }} , year={1987} } @book{b23, , title={{Ecological Disasters in Nigeria: soil Erosion, Federal Ministry of Science and Technology}} , author={{ OBabalola }} , editor={Enabor, E. E. et al.} , year={1988} , note={Soil properties affecting infiltration, runoff and erodibility} } @incollection{b24, , title={{Historical rainfall pattern and Arroyo activity within the Zuru river drainage basin}} , author={{ RBalling } and { SWells }} , journal={{New Mexico. Association of American Geographers}} 80 4 , year={1990} } @book{b25, , title={{}} , author={{ Baldwin }} , year={2003} Nigeria threatened Environment National Profile } @incollection{b26, , title={{Failure sequence of gully headwalls in Western Iowa Soils Science Society off Nigeria}} , author={{ JMBaradford } and { RFPiest } and { RGSapomer }} , journal={{Society of America}} 42 , year={2005} } @book{b27, , title={{Comparative analysis of runoff soil nutrient loss under different cropping systems. An unpublished Ph}} , author={{ MBaura }} , year={1995} , address={Nigeria} University of Ibadan , note={D Thesis} } @incollection{b28, , title={{Edward woolly -A Pioneer in Soil and Water conservation Research}} , author={{ LDBaver }} , booktitle={{Proceeding of Soil Sciences Society of America.}} 3 , year={2003} } @incollection{b29, , title={{Answers -A Model for Watershed Planning}} , author={{ DBBeasley } and { LFMuggins } and { EJMunke }} , journal={{Trans Am Soc. Agric Eng}} 23 , year={1980} } @incollection{b30, , title={{Water Quality Modelling: A Review of Uncertainty}} , author={{ MBBeck }} , journal={{Water Resources Res}} 23 8 , year={2012} } @incollection{b31, , title={{Instability of alluvial valley floors: A method for its assessment Transaction of}} , author={{ ZBBegin } and { SSchumm }} , journal={{American Society of Agricultural Engineers}} 22 , year={1979} } @incollection{b32, , title={{}} , author={{ MJBerry }} , journal={{Erosion control on Bukit Bakar, kelanton, Malaysia Forester}} 19 , year={2007} } @incollection{b33, , title={{What is watershed runoff}} , author={{ RBetson }} , journal={{Journal of Geophysical Research}} 69 , year={1964} } @book{b34, , title={{A flood flow formula for Connecticut. United States Geological Survey}} , author={{ BLBigwood } and { MPThomas }} , year={1955} , publisher={Circ} } @incollection{b35, , title={{Gully sidewall development in New South Wales}} , author={{ RLBlang }} , journal={{Soil Science Society of American}} , year={2010} } @incollection{b36, , title={{The development of discontinuous gullies in a Pumice catchment}} , author={{ RBlong }} , journal={{American Journal of science}} 268 , year={2002} } @incollection{b37, , title={{The role of sidewall Processes in gully development: some N}} , author={{ RLBlong } and { DOGraham } and { JVaeneoss }} , journal={{J.W. examples, Earth Surface Processes and Landforms}} 7 , year={1982} } @book{b38, , title={{Subsurface water movement in an Upland Coastal Pla0in Soil as influenced by Plinthite}} , author={{ LJ; H FBlume } and { RKPerkins } and { Hubbard }} , year={1987} , publisher={Soil Science Society of America} 52 } @book{b39, , title={{Evaluation of Soil Erosion in the Harerge Region of Ethiopia Using Soil Models, Rainfall Simulation}} , author={{ BWBobe }} , year={2004} Department of Soil Science, Faculty of Natural and Agricultural Sciences, University of Pretoria , note={Ph.D. Thesis submitted to the} } @book{b40, , title={{Gully erosion analysis using remote sensing and geographic information systems}} , author={{ GBocco }} , year={1990} University of Amsterdam , note={Unpublished Ph.D. dissertation} } @incollection{b41, , title={{Gully erosion: Processes and models}} , author={{ GBocco }} , journal={{Progress in Physical Geography}} 15 , year={1991} } @book{b42, , title={{Erosional Development of Valley -Bottom Gullies in the Upper Midwestern United States}} , author={{ JMBradford } and { RPiest }} , editor={Cates D. R. & Vitek J. K. (EDS) Thresholds in Geomorphology} , year={2009} , address={London} } @incollection{b43, , title={{Steps towards a better understanding or urban runoff processes}} , author={{ EFBrater }} , journal={{Water Resources Research}} 4 2 , year={2007} } @incollection{b44, , title={{Erosion and deposition in the Loess mantled Great Plains Medicine Greek drainage00 basin}} , author={{ JCBrice }} , journal={{Nebraska -U.S. Geological Survey professional Paper}} 352 , year={1966} } @incollection{b45, , title={{The deposition of stony colluviums on clay soil as a cause of gully formation in the Rif Mountains: Morocco}} , author={{ JWBrink } and { PDJungerius }} , journal={{Earth Surface processes and Landforms}} 8 , year={2008} } @book{b46, , author={{ RBryan } and { AYair }} , title={{Badland Geomorphology and piping}} Norwich , publisher={Geobooks} , year={2013} } @incollection{b47, , title={{The influence of slope angle on soil entrainment by sheet wash and rain splash}} , author={{ RBBryan }} , booktitle={{Earth surface processes}} , year={1999} 4 } @book{b48, , title={{Rill erosion processes and significance Catena supplement 8}} , author={{ RBBryan }} , year={2000} } @incollection{b49, , title={{The concept of soil erodibility and some problems of assessment and applicable}} , author={{ RBBryan } and { GGovers } and { JPeosen }} , journal={{Catena}} 16 , year={2011} } @book{b50, , title={{The relative erodibility of soils developed in the peak District of Derbyshire}} , author={{ RDBryan }} , year={1998} , note={Geografiska .70, Ser. A1969 394} }