Efficiency of the ELECTRE Tri method in assessing the suitability of the Chaldoran area for potato cultivation

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SERVATI M.

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Journal: Journal of Water and Soil Conservation Year:2018 | Volume:25 | Issue:1 Page(s): 271-284

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Title

Efficiency of the ELECTRE Tri method in assessing the suitability of the Chaldoran area for potato cultivation

Author(s)

SERVATI M. | Issue Writer Certificate

Keywords

Actual yieldQ3

Multicriteria methodQ2

Potential yieldQ1

Root mean square methodQ1

Abstract

Background and Objectives: Land suitability evaluation is inevitable for soil protection. Selection of an appropriate land suitabiliyty method seems to be necessary due to the limitation of the FAO method as a conventional method. In this regard, multi-criteria desision methods (MCDM) such as electrothermics can be helpful due the consideration of effective factors weights and experts oponions in land suitability evaluation. Materials and Methods: In this research, Square Root Method and ELECTRE Tri multiple criteria method were used for suitability evaluation in an area about of 5000 ha of Chalderan region located between 47° 19′-47° 23′ East longitude and 39° 01′-39° 08′ North latitude for potato cultivation. Sixty soil profiles were dug, described and sampled. After soil samples analysis, soil texture, gravels, calsium carbonate, gypsum, EC, ESP, slope, flooding, drainage and region climate in different profile were produced by weighted coefficients. Criteria weights via pair-wise comparison matrix method and ELECTRE Tri profiles and thresholds limits determined using requirements table, soil and land properties data. In two selected land suitability method, land production potential was also calculated by multiplying the soil indices and radiation thermal production potential and compared using different statistics. Results: The classification of soils is based on Entisols, Inceptisols and Aridisols based on 12th Keys to soil taxonomy. The comparison of the mean values of allocated grades mean to suitability classes in the ELECTRE Tri method with the Duncan test showed a significant difference, indicating the accuracy of this method in differentiation of land suitability classes. The potential of potato production in the Chaldoran region was estimated to be from 9330 to 30200 and from 10140 to 32350, respectively, using Root means squre method and ELECTRE Tri method. Considering the statistical indices including R2 (0. 87) and RMSE (241. 2) the ELECTRE Tri method has more accuracy than the parametric method with R2 of 0. 79 and RMSD of 197. 6. The GMER index also indicated lowestimation of two selected land evaluation method. On the other hand, the precision of this combined method depends on determining the transition suitable limits, appropriate values of thresholds and criteria weights as well as usage of fuzzy logic principals on calculation processes. Conclusion: Based on the obtained results, it seems that ELECTRE Tri method, by integration of expert opinion, is better suited to the problem of land suitability for agriculture. Also, there was a considerable time saving during the development of the land suitability evaluation for potato culture. The coherence of the obtained results with observed yield confirms the effectiveness of system.

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APA: Copy

SERVATI, M.. (2018). Efficiency of the ELECTRE Tri method in assessing the suitability of the Chaldoran area for potato cultivation. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 25(1 ), 271-284. SID. https://sid.ir/paper/156376/en

Vancouver: Copy

SERVATI M.. Efficiency of the ELECTRE Tri method in assessing the suitability of the Chaldoran area for potato cultivation. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2018;25(1 ):271-284. Available from: https://sid.ir/paper/156376/en

IEEE: Copy

M. SERVATI, “Efficiency of the ELECTRE Tri method in assessing the suitability of the Chaldoran area for potato cultivation,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 25, no. 1 , pp. 271–284, 2018, [Online]. Available: https://sid.ir/paper/156376/en

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