ZONING OF WATER PRODUCTIVITY OF WHEAT BY CROPSYST CROP MODEL IN DIFFERENT WATER PERIODS (CASE STUDY: KARKHEH WATERSHED)

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MOUMENI R.; BEHBABANI S.M.R.; NAZARIFAR M.H.; AZADEGAN B.

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Paper Information

Journal: Iranian Journal of Irrigation and Drainage Year:2008 | Volume:2 | Issue:1 Page(s): 63-76

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Title

ZONING OF WATER PRODUCTIVITY OF WHEAT BY CROPSYST CROP MODEL IN DIFFERENT WATER PERIODS (CASE STUDY: KARKHEH WATERSHED)

Author(s)

MOUMENI R. | BEHBABANI S.M.R. | NAZARIFAR M.H. | AZADEGAN B. | Issue Writer Certificate

Keywords

CROPSYSTQ3

GEOGRAPHIC INFORMATION SYSTEMS (GIS)Q1

KARKHEH BASINQ2

WATER PRODUCTIVITYQ2

WATER BALANCEQ1

Abstract

Improvement of water use in agriculture is considered the highest among other water users because of complications in consumption and production process. Determination of water potential with considering its inter-relationships with the soil, plant and atmosphere and the value of WATER PRODUCTIVITY can be used as the proper index in evaluation the state of water use. Determination of different yield levels through field experiments is difficult for various temporal and spatial ranges. Therefore, applying simulation models could be a method which makes it possible to assess WATER BALANCE, simulate growth process and study different scenarios. For that, combination of Geographic Information Systems (GIS) and crop models is necessary. The objective of this study is to apply CROPSYST crop growth model coupled with GIS to analyze WATER PRODUCTIVITY, which is an indicator of water use efficiency at the basin. Hence, Karkheh river basin in west of Iran was selected and zoning of WATER PRODUCTIVITY was done basis of calculations and analysis. The simulations were done in dry and potential yield levels for wheat crop. For investigating temporal variations of WATER PRODUCTIVITY in continuous record periods, this index was analyzed in three conditions drought, wet and normal years by use of Standard Precipitation Index (SPI) in basin and prepared ifs spatial extension maps. The results showed that WATER PRODUCTIVITY and potential production of wheat in drought condition were highest among the wet and normal conditions because of higher solar radiation value through growing period. In, this situation, the maximum of WATER PRODUCTIVITY is 0.62 kg/m3 that highest it's spatial extension is in north and northwest of watershed. In wet condition, northeast and east of region have the maximum of WATER PRODUCTIVITY of 0.53 kg/m3 and in normal condition, the parts of watershed's east and west have the maximum of WATER PRODUCTIVITY 0.59 kg/m3. Hence, the spatio- temporal analysis of WATER PRODUCTIVITY provides substantial information for water saving opportunities. Also, since those temporal and spatial dimensions could be studied at once, the combination and development of GIS and crop growth model allowed a more effective analysis and broader understanding about the implications of the indices under investigation.

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References

تعیین کارایی مصرف آب محصولات زراعی مناطق مختلف کشور (کرمان، همدان، مغان، گلستان، خوزستان)

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APA: Copy

MOUMENI, R., BEHBABANI, S.M.R., NAZARIFAR, M.H., & AZADEGAN, B.. (2008). ZONING OF WATER PRODUCTIVITY OF WHEAT BY CROPSYST CROP MODEL IN DIFFERENT WATER PERIODS (CASE STUDY: KARKHEH WATERSHED). IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, 2(1), 63-76. SID. https://sid.ir/paper/131624/en

Vancouver: Copy

MOUMENI R., BEHBABANI S.M.R., NAZARIFAR M.H., AZADEGAN B.. ZONING OF WATER PRODUCTIVITY OF WHEAT BY CROPSYST CROP MODEL IN DIFFERENT WATER PERIODS (CASE STUDY: KARKHEH WATERSHED). IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE[Internet]. 2008;2(1):63-76. Available from: https://sid.ir/paper/131624/en

IEEE: Copy

R. MOUMENI, S.M.R. BEHBABANI, M.H. NAZARIFAR, and B. AZADEGAN, “ZONING OF WATER PRODUCTIVITY OF WHEAT BY CROPSYST CROP MODEL IN DIFFERENT WATER PERIODS (CASE STUDY: KARKHEH WATERSHED),” IRANIAN JOURNAL OF IRRIGATION AND DRAINAGE, vol. 2, no. 1, pp. 63–76, 2008, [Online]. Available: https://sid.ir/paper/131624/en

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