Assessment of soil erosion and watershed prioritization using empirical models EPM and MPSIAC (Case Study: Aro watershed)

Subject Areas : forest

reza  bayat ¹ (عضو هیات علمی پژوهشکده حفاظت خاک و آبخیزداری تهران ایران)
maryam  rostami ² (دانشجوی دکتری علوم و مهندسی آبخیزداری دانشگاه تهران ایران)

Received: 2016-01-05 Accepted : 2016-04-21 Published : 2016-05-21

Keywords: soil erosion, prioritization, MPSIAC model, Sediment, Aro Watershed, EPM model,

Abstract :

Abstract Identification,  evaluation  and  prioritization  of  different  areas  can  produce  valuable information for the watershed comprehensive plans, soil conservation and mitigation of the erosion types based on amount of erosion and sedimentation. This study used the MPSIAC and EPM models as a comparison and prioritization to estimate erosion and sediment   in   the   Aro   Watershed   Basin.   Required   data   regarding   the   natural characteristics  of  studying  the  watershed  basin  was  provided  from  comprehensive studies  of Hableh-Rood  basin  and  field  studies.  By using the required  factors,  the amount of erosion was calculated in both the models. In the MPSIAC model, erosion was calculated to be 451 m3/km2/y, whereas sediment was calculated as 233 m3/km2/y. However, the rate of erosion in the EPM model was estimated to be 378 m3/km2/y and for sediment, it was 200 m3/km2/y. The results showed that in some subbasins there was good correlation between the MPSIAC and EPM models, however in areas with high erosion the EPM model has less certainty than the MPSIAC model. The highest area was moderate class in the both of models and both of erosion and sediment in terms of spatial distribution. The results showed that EPM and MPSIAC model have not good agreement in the all classes. Prioritization of the hydrologic units showed that A4 unit in the EPM model and A-1-4-3 unit in the MPSIAC model allocated maximum of amount of erosion and deposition, in this area.

References:

Refrences

1. Ahmadi H., M. R. Servati., A. M. Noormohamady, 2011, Sediment And Erosion Estimation Using EPM And MPSIAC, Using Geomorphological Method And GIS In Baghareh (Torbate Heydarieh) Catchment Basin, Journal of Geographical Science, (Issue 7).

2. Burkard, M.B., Kostaschuck, R. A., 1995; Initiation  and evolution of gullies along the shore line of lake Huron.J.Geomorphology.Vol.14: pp 211 - 219.


3. Bobrovistskaya, N.N.2000; Hydrological, meteorological and morphological aspects of studying gully erosion in period of global change. Elsevier, Catena Verlag. Cremlingen.


4. Bagherzadeh Karimi, M., Evaluation of models to predict of the erosion and sedimentation, and the techniques of remote sensing and GIS in soil erosion studies (2002).Master Thesis, Tarbiat Modarres University.


5. Bayat, R., Refahi, A., Darvishsefat, a., and Sarmadian, F., Evaluation of efficiency of the MPSIAC and EPM models in  the sediment estimating (Taleghan basin), (2001), Journal of Agricultural Science, Faculty of Agriculture, Tehran University, Vol 1, N 32.


6. Bayat, R., Jafari Ardakani, A., and Shahkarami, A. Review the situation of erosion in the  Lorestan province with RS and GIS (2011),Journal of natural ecosystems,Second year, second issue, Winter 1390..


7. Dadrasi, S, A,1997, Erosion Assessment in the badland catchments of western Zanjan valley, using RS and GIS, MSc Thesis, ITC, Enschede, The Netherlands,112


8. Ezechi, J.I.2000; The influnce of runoff, lithology and water table on the dimensions and rate of gullying Processes in Eastern, Nigeria. Elsevier, Catena Verlag. Cremlingen (Web-Site).


9. Fargas, D., Martinez, J. A, and Poch. R.M (1997). Identification of Critical Sediment Source Area at Regional Level, Journal of Physics & Chemistry of the earth, 22 (3-4).


10. Gavrilovic. Z., 1988, The Use of an Empirical Method (Erosion Potential Method) for Calculating Sediment Production and Transportation in Unstudied or Torrential streams International Conference of River regime, 17-20May, Wallingford, England 1988 pp, 411-422.


11. Jalalian, A., Quantitative and qualitative studies of soil erosion in the northern watershed of the Karoon river (1992), Third Congress of Soil Science, Faculty of Agriculture, Tehran University and Institute of Soil and Water.


12. Johnson, C.W. and Gebhardt, K. A. 1982. Predicting sediment yields from rangelands. In proceedings of workshop on estimating erosion and sediment yield on rangelands, Tucson, Arizona, March 1981 US Department of Agriculture, Agriculture Reviews and Manuals, Western Series , No. 26, P. 145-146.


13. Karimi, H., Vardajani, S., Application of SATEEC models in GIS for the estimation of sediment and preparing the erosion map in the Zayandehrood subbasins (2007)., Proceedings of the Fourth National Conference on Science and Watershed Engineering, Iran, Natural Resources Faculty of Tehran University.


14. Mahmoodabadi, M., Refahi, H., Charkhabi, A.,  Preparation of the soil erosion map using Landsat satellite ETM+ images and geographic information system in the Golabad Isfahan basin (2005),Proceedings of the Fourth Geomatics.


15. Mortezaei, M., Quantitative assessment of the effects of environmental variables on the gully erosion (2005), PhD thesis., Faculty of Agriculture and Natural Resources, Tehran, Islamic Azad University, Science and Research, 154 pages.


16. Refahi, H., Nemati, M.R., Applying the  EPM method to the study of erosion and sediment yield in the Alamut basin.Iranian Journal of Agricultural Sciences 26 (2): 32 45.


17. Refahi, H., Water Erosion and conservation (2006), Publication of Tehran University, Fifth Edition, 671 pages.


18. 30-Rinos, M. H., M. S. P. Aggarwal and R. P. Desilva, 2000, Application of Remote Sensing and GIS on soil erosion assessment at Bata River Basin, India. Department of Agricultural Engineering, Faculty of Agriculture.


19. Salajegheh, A., and Delfari, S., Comparison of qualitative and quantitative geomorphology methods for estimating erosion and sediment (Case study: Khusban basins of Taleghan catchment) (2007), Abstract Proceedings of the Fourth National Conference on Science and Engineering, watershed management, Iran. Natural Resources Faculty of Tehran University.


20. S. H. R. Sadeghi: A Semi- Detailed technique for Soil Erosion Mapping Basad on BLM and Satellite Image A puplications, J.Agric. Sci.Technol. (2005): 133-142.


21. Tajgardan, T., Ayubi, SH., and Juibari, SH., Estimation of erosion and sediment using satellite and GIS data and MPSIAC models (Case Study: Ziarat Basin) (2008), Journal of Research and conservation in natural resource, No. 79.