Site suitability assessment and mapping for rice cultivation using multi-criteria decision analysis based on fuzzy-AHP and TOPSIS approaches under semihumid ecological condition in delta plain

• Published in: Paddy and water environment Vol. 17; no. 4; pp. 665 - 676
• Main Authors: Özkan, Barış, Dengiz, Orhan, Demirağ Turan, İnci
• Format: Journal Article
• Language: English
• Published: Singapore Springer Singapore 01-10-2019; Springer Nature B.V
• Subjects: Agriculture; Alluvial deposits; Alluvial plains; Alluvium; Analytic hierarchy process; Area; Biomedical and Life Sciences; Calcium carbonate; Cultivation; Decision analysis; Ecological conditions; Ecological monitoring; Ecotoxicology; Fluvial deposits; Geoecology/Natural Processes; Geographic information systems; Geographical information systems; Grain cultivation; Hydrogeology; Hydrology/Water Resources; Imports; Information systems; Life Sciences; Mapping; Multiple criterion; Oryza sativa; Remote sensing; Rice; Rice fields; Rivers; Soil; Soil Science & Conservation; Turkey; Fuzzy-AHP; Rice cultivation; Multi-criteria decision; Bafra delta plain
• ISSN: 1611-2490; 1611-2504
• DOI: 10.1007/s10333-019-00692-8

Many areas in Turkey are ecologically suitable for paddy cultivation, and their yield per hectare is above the world average. Despite this fact, the amount of production cannot supply the amount of consumption. This situation causes Turkey to be a country that imports rice. This study was carried out within a 1266.7 ha area in the Bafra alluvial delta plain, which is located in Samsun, which is one of the most important paddy cultivation areas of Turkey. The purpose of the study is to determine the areas that are suitable for paddy (
Oryza sativa
) cultivation among the soils that have various physicochemical characteristics, which are formed on the alluvial deposits that were carried by the Kızılırmak River, with the help of multi-criteria decision analysis and geographic information system. In the study, nine different soil criteria were used as texture, drainage, pH, EC, CaCO
3
, TN, AvP, AvK and AvZn. Fuzzy Analytic Hierarchy Process was used for determining the levels of importance of the criteria and Technique for Order Preference by Similarity to Ideal Solution methods were used for ranking the study areas. According to the obtained results, about 64.1% of the area is highly suitable and suitable for paddy cultivation and 15.2% of the area is less suitable. Also, 20.8% of the total area constitutes currently and permanently unsuitable areas.