Taei Semiromi, J. (2012) The Agro ecological Zoning, Using Geographic Information System, Remote Sensing Data and WOFOST Model in the Borujen Watershed. Masters thesis, university of zabol.
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Abstract
Agroecological zoning is multidisciplinary model that can attention to create spatial database, evaluation and agricultural land use planning. This study was performed in order to evaluate the wheat cropping system with agroecological zoning methodology in the Borujen watershed. So the long term daily climatic database was made from 18 synoptic and climatic stations that covered whole of study area. Potential evapotranspiration was calculated using ET Calculator software base on Penman-Montith method. The WOFOST model that showed acceptable performance during validation for predicting yield and development stages of wheat cultivars under potential and water limited conditions, was used for estimation of wheat production. Wheat yield production was simulated for all stations, and then the outputs of model were interred to ArcGIS software environment. The output data of model was interpolated using Spline function for yield estimation overall study area. The results showed, mean potential yield of wheat was varied 6.2 to 6.9 t ha-1 overall study area, so that the central and northern east basins are more suitability for yield production in potential mod. Mean water limited yield of wheat was varied 2.4 to 3.7 t ha-1 overall study area, so that the eastern south basins(Imam Qeis basin) are more suitable for wheat in rainfed or water limited conditions.The results of yield gap analysis in different wheat cropping systems performed on four different agro-ecological zones, include of Zone1: yield gaps = 4.2-6.2 Mg/ha, Zone 2: yield gaps = 3-3.6 Mg/ha, Zone 3: yield gaps < 2.4 Mg/ha, and Zone 4 is unsuitable area. Analysis of water balance pattern in the study area showed that, the main factors that affected on yield gap are rainfall distribution and low temperature during moisture growing period. This study demonstrates that WOFOST model has the good capability for wheat yield simulation in potential and water limited conditions and can be used as suitable approach to analyze the cropping systems at regional scales.
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Agroecological zoning, Cropping systems, GIS, WOFOST model, Winter wheat. |
| Subjects: | S Agriculture > SB Plant culture |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 07 Jun 2017 07:13 |
| Last Modified: | 07 Jun 2017 07:13 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/1468 |
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