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Asian Journal of Agricultural Research
  Year: 2008 | Volume: 2 | Issue: 2 | Page No.: 45-55
DOI: 10.3923/ajar.2008.45.55
 
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Comparative Evaluating the Climate-Related Runoff Production in Slopped-Farms of Iran, Using Simulation

M. Gholipoor

Abstract:
In 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.
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How to cite this article:

M. Gholipoor , 2008. Comparative Evaluating the Climate-Related Runoff Production in Slopped-Farms of Iran, Using Simulation. Asian Journal of Agricultural Research, 2: 45-55.

DOI: 10.3923/ajar.2008.45.55

URL: https://scialert.net/abstract/?doi=ajar.2008.45.55

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