Asian Journal of Agricultural Research1819-1894xxxx-xxxxKnowledgia Review10.3923/ajar.2008.45.55GholipoorM. 2200822In this study, soil water balance sub-model of CYRUS with some modifications
was applied for estimating the value of runoff for slopes 0 to 16% (with
interval of 2%) in five locations of Iran. Results indicated that the
cumulated runoff over six months is averagely 62, 52, 14, 13 and 4 mm
for Shiraz, Kermanshah, Mashhad, Tabriz and Isfahan, respectively. Compared
to Kermanshah, the value of runoff was higher for Shiraz in months December,
January and February; while that of runoff in March, April and May was
lower for Shiraz than for Kermanshah; based on value of runoff for month
in which planting (plowing the soil and consequently making it more erodable)
of chickpea is achieved, Shiraz appeared to be more at risk for cultivation
in slopped-farms as compared to Kermanshah. For Mashhad and Tabriz that
of runoff found to be sensible in March, April and May, but not in others.
Averaged over slopes and locations, frequency of heavy runoffs found to
be higher in January and March, compared to other months. The incrementing
effect of slope on runoff in January was higher for Shiraz, as compared
to Kermanshah, but in March it was lower for Shiraz than for Kermanshah;
in April that of slope was more sensible for Mashhad, when compared with
Shiraz. Generally, results suggest that for Shiraz and Kermanshah, very
low-slopped farms should be devoted to cultivation; additionally, the
cultivation of spring crops should be substituted by winter crops; for
situations in which spring-crops are dominantly cultivated, the sowing
of spring-crops for which dormant sowing is achievable, could be preferred.
These substitutions can coincide more vegetation covered-soil with heavy
runoffs and consequently decreased soil erosion.]]>Amir, J. and T.R. Sinclair,1991295969Blackburn, W.H.,197511929937Castro-Filho, C., J.C. Henklain, M.J. Vieira and R. Casao-Jr.,199920271283Cerda, A.,2001525968Doorenbos, J. and W.O. Pruitt,19772nd Edn.pp: 179pp: 179Gholipoor, M. and A. Soltani, 20052005pp: 16851689Gholipoor, M. and A. Soltani, 20052005pp: 199201Gholipoor, M. and A. Soltani,20062006Gholipoor, M. and A. Soltani, 20062006pp: 440440Gholipoor, M. and A. Soltani,20062006Gholipoor, M., A. Soltani and S. Sharafi, 20062006pp: 159Gholipoor, M., A. Soltani F.B. Shekari and S. Karimi,20062006pp: 441Gholipoor, M.,20071189204Hillel, D. and N. Tadmor,1962433341Knisel, W.G.,19801980Kramer, L.A. and L.D. Meyer,196912638641Poesen, J. and F. Ingelmo-Sanchez,199219451474Pote, D.H., T.C. Daniel, A.N. Sharpley, P.A. Moore-Junior and D.R. Edwards et al.,199660855859Ritchie, J.T.,19911991pp: 31-54pp: 31-54Scoging, H.,19891989pp: 87-116pp: 87-116Sinclair, T.R.,19941994pp: 509-532pp: 509-532Soltani, A., K. Ghassemi-Golezani, F.R. Khooie and M. Moghaddam,199962213224Soltani, A., F.R. Khooie, K. Ghassemi-Golezani and M. Moghaddam,200068205210Soltani, A., B. Torabi, E. Zeinali and R. Sarparast,20043705708Soltani, A., S. Galeshi, M.R. Attarbashi and A.H. Taheri,200489369378Soltani, A., B. Torabi and H. Zarei,200591273285Soltani, A., G.L. Hammer, B. Torabi, M.J. Robertson and E. Zeinali,200699113Soltani, A., M.J. Robertson and A.M. Manschadi,2006992434Soltani, A., M.J. Robertson, Y. Mohammad-Nejad and A. Rahemi-Karizaki,2006991423Soltani, A., M.J. Robertson, B. Torabi, M. Yousefi-Daz and R. Sarparast,2006138156167Tanner, C.B. and T.R. Sinclair,19831983pp: 1-27pp: 1-27Tarchitzky, J., A. Banin, J. Morin and Y. Chen,198433135155Zhang, X.C. and W.P. Miller,199660860865