COMPARISON OF LAND SUITABILITY CLASSIFICATION METHODS FOR IRRIGATED WINTER WHEAT

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SEYEDJALALI S.A.

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Journal: Iranian Journal of Soil Research Year:2001 | Volume:- | Issue:(Special Issue) Page(s): 56-65

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Information Journal Paper

Title

COMPARISON OF LAND SUITABILITY CLASSIFICATION METHODS FOR IRRIGATED WINTER WHEAT

Author(s)

SEYEDJALALI S.A. | Issue Writer Certificate

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Abstract

The study area is about 36,000 hectares and is located in Mianab area (Shooshtar district) in Khuzestan Province, Iran. It is between 31° 35' to 32° north latitude and 48° 50' to 49° east longitude. Based on nearest synoptic stations to the study area, the climate of the area is semiarid. The maximum daily air temperature is 46.7 °C in June and the minimum daily air temperature is 7.1 °C in December. The annual rainfall is about 325 mm. The growing period in area starts from December 4, and ends in March 10, which is about 96 days. The aim of this research was comparison of land suitability classification with different methods for finding the best methods, which suit the area. In this respect four methods were used simple limitation method, limitation regarding number and intensity of limitation, parametric method (Storie method) and parametric method (square root method). For this purpose 75 soil profiles were studied and classified up to family level, with using Keys to Soil Taxonomy (USDA, 1998). There were 20 families and 40 phases of the families. The main subgroups were Typic Ustitluvents, Typic Haplustepts, Calcic Haplusteps, Haplocalcic Haplustepts, Fluventic Haplustepts, Calcic Aquisalids and Typic Haplosalids. The results of land suitability classification show that the main soil-related limitations are salinity, alkalinity, drainage, calcium carbonate, and climate-related limitations are mean daily temperature and amount of rainfall during late season stage of growing cycle. The results of four different land suitability methods show that simple limitation method, limitation regarding number and intensity of limitation, and parametric method (square root method) are closely related, but the application of Storie method leads to a land suitability class which is one level lower, compare to other methods. Field observation demonstrated that Storie method failed giving satisfactory results in the study area. The results obtained, recommend that simple limitation method or limitation regarding number and intensity of limitation are more appropriate for qualitative land suitability classification and parametric is more accurate for quantitative land suitability classification purposes.

Cites

VARIABILITY OF QUALITATIVE LAND SUITABILITY EVALUATION (PARAMETRIC METHOD) IN A DETAILED MAP UNIT IN FARROKHSHAHR AREA, CHAHARMAHAL AND BAKHTIARI PROVINCE

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APA: Copy

SEYEDJALALI, S.A.. (2001). COMPARISON OF LAND SUITABILITY CLASSIFICATION METHODS FOR IRRIGATED WINTER WHEAT. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, -((Special Issue)), 56-65. SID. https://sid.ir/paper/15999/en

Vancouver: Copy

SEYEDJALALI S.A.. COMPARISON OF LAND SUITABILITY CLASSIFICATION METHODS FOR IRRIGATED WINTER WHEAT. IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES[Internet]. 2001;-((Special Issue)):56-65. Available from: https://sid.ir/paper/15999/en

IEEE: Copy

S.A. SEYEDJALALI, “COMPARISON OF LAND SUITABILITY CLASSIFICATION METHODS FOR IRRIGATED WINTER WHEAT,” IRANIAN JOURNAL OF SOIL AND WATERS SCIENCES, vol. -, no. (Special Issue), pp. 56–65, 2001, [Online]. Available: https://sid.ir/paper/15999/en

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