Agroecological evaluation of Gonbad-e-Kavous township for rainfed wheat cultivation by spatial analysis of geographic information system (GIS)

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Farhadian Azizi sh.; KAZEMI H.; SOLTANI A.

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Journal: Crop Production Year:2018 | Volume:11 | Issue:2 Page(s): 1-17

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Title

Agroecological evaluation of Gonbad-e-Kavous township for rainfed wheat cultivation by spatial analysis of geographic information system (GIS)

Author(s)

Farhadian Azizi sh. | KAZEMI H. | SOLTANI A. | Issue Writer Certificate

Keywords

Environmental variablesQ2

GeostatisticalQ2

Gonbad–e-KavousQ3

Land suitabilityQ1

Rainfed wheatQ2

Abstract

Backgroun and objectives: Wheat is grown worldwide in agricultural lands under different cropping systems. About 66% of cultivetid area of wheat in Iran was belonged to ranifed cropping systems. Current estimation showed that Iran needs to approximately 25 billion ton of wheat in 2021. Land suitability for a particular agricultural crop such as wheat requires consideration of many criteria. Evaluation of the environmental components and understanding of local biophysical restraints can help to determine the suitable areas for agricultural landuse. Topographic characteristics, climatic conditions and the soil quality of an area are the most important parameters to evaluate Land suitability. The objective of this research was evaluation of environmetal variables and agroecological zoning of Gonbad– e-Kavous township for Rainfed wheat cultivation by potential and spatial analysis of geographic information system (GIS) and analytical hierarchy process (AHP). Mterials and methods: At the fisrt agroecological requirements of crop identified according to scientific resources. Then, thematic requirement maps were provided. In this research, studied Environmental variables were annual, autumn, spring and May precipitations, average, minimum and maximum temperatures, germination temperature, the maximum temperature in heading and grain filling stages, slope percent, elevation, slope aspect, OM, pH, and EC. Then, each layer was classified into four classes (high suitable, suitable, semi-suitable and unsuitable). The analytical hierarchy process (AHP) was used to determine the weight of criteria by using the questionnaires analysis sheet. In final, by weighted overlay technique in geographic information system (GIS) media, Land suitability map was generated in 4 classes. Results: In this study, the results showed that about 9. 20% and 24. 73% of agricultural lands in Gonbad– e-Kavous township were located in the high suitable and suitable zones for Rainfed wheat cultivation, respectively. These regions were identified in the south of this township. In these zones, there are not limiting factors for wheat cultivation according to precipitation and temperatures variables, slope percent, elevation and soil characteristics. In this evaluation, the semi-suitable (39. 92%) and unsuitable (26. 15%) regions were located in the some areas of central, north, and east north of Gonbad– e-Kavous. In addition, these areas were faced by at least one limitation factors from environmental variable. Conclusion: In this research, it was identified that 33. 93% of studied area was suitable for wheat cultivation according to topography and climatic conditions and there is not limitation for these variables. The limiting factors in semi-suitable and unsuitable regions were including: low annual and spring precipitations, low content of organic matter and high soil salinity.

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APA: Copy

Farhadian Azizi, sh., KAZEMI, H., & SOLTANI, A.. (2018). Agroecological evaluation of Gonbad-e-Kavous township for rainfed wheat cultivation by spatial analysis of geographic information system (GIS). ELECTRONIC JOURNAL OF CROP PRODUCTION, 11(2 ), 1-17. SID. https://sid.ir/paper/394293/en

Vancouver: Copy

Farhadian Azizi sh., KAZEMI H., SOLTANI A.. Agroecological evaluation of Gonbad-e-Kavous township for rainfed wheat cultivation by spatial analysis of geographic information system (GIS). ELECTRONIC JOURNAL OF CROP PRODUCTION[Internet]. 2018;11(2 ):1-17. Available from: https://sid.ir/paper/394293/en

IEEE: Copy

sh. Farhadian Azizi, H. KAZEMI, and A. SOLTANI, “Agroecological evaluation of Gonbad-e-Kavous township for rainfed wheat cultivation by spatial analysis of geographic information system (GIS),” ELECTRONIC JOURNAL OF CROP PRODUCTION, vol. 11, no. 2 , pp. 1–17, 2018, [Online]. Available: https://sid.ir/paper/394293/en

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