GEOGRAPHICAL INFORMATION SYSTEM-BASEDMULTI-CRITERIA DECISION ANALYSIS OF POTATO CULTIVATION LAND SUITABILITY IN WELIMADA DIVISIONAL SECRETARIAT, SRI LANKA

Authors

  • ADIKARIGE DON SRIYANI JAYASINGHE DEPARTMENT OF GEOGRAPHY,FACULTY OF HUMANATIES AND SOCIAL SCIENCES, THE UNIVERSITY OF RUHUNA,MATARA,81000,SRI LANKA
  • NEEL CHAMINDA WITHANAGE DEPARTMENT OF GEOGRAPHY,FACULTY OF HUMANATIES AND SOCIAL SCIENCES, THE UNIVERSITY OF RUHUNA,MATARA,81000,SRI LANKA http://orcid.org/0000-0002-0326-7814

Keywords:

Analytical Hierarchy Process, GIS, Land suitability, Multi-criteria decision analysis, Potato

Abstract

The purpose of the research was to apply the GIS approach to find land suitability for potato cultivation in
Welimada Divisional Secretariat (DS). The task applied GIS-MCDA and Analytical Hierarchy Process (AHP). For the suitability classification, soil, physical, and socioeconomic factors were considered. While ph and salinity were sub-criteria under the soil elevation, slope, and water availability were sub-criteria under physical factors. Road and market proximity, land use were considered as sub-criteria under socio-economic factors. Suitability classification was performed through several steps including structuring, standardizing, calculating criteria weights, assign weights for criteria, and suitability assessment. As result, 41% of the total land was moderately suitable for potato cultivation and 23% of the area was highly suitable. Only 4% of the land was classified as least suitable and 14%, 15% of the land classified as low suitable and marginal suitable area respectively. These results provide knowledge about the interaction and relationship of the criteria. So, this research can be utilized as a model for fruitful potato cultivation practices as well as, it can be taken as a guide for future land use assessment in potato growing areas, especially in Sri Lanka.

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Author Biographies

ADIKARIGE DON SRIYANI JAYASINGHE, DEPARTMENT OF GEOGRAPHY,FACULTY OF HUMANATIES AND SOCIAL SCIENCES, THE UNIVERSITY OF RUHUNA,MATARA,81000,SRI LANKA

Has graduated from  the University of Ruhuna, Sri Lanka. Her specialty was Geography and research interest focus on GIS-based multi-criteria analysis for the crop land suitability assessment and modeling.

NEEL CHAMINDA WITHANAGE, DEPARTMENT OF GEOGRAPHY,FACULTY OF HUMANATIES AND SOCIAL SCIENCES, THE UNIVERSITY OF RUHUNA,MATARA,81000,SRI LANKA

Lecturer in Geography attached to the Department of Geography, University of Ruhuna, Sri Lanka. He has earned M.sc in GIS and remote sensing at the postgraduate institute of Science, University of Peradeniya,Sri Lanka and the  Masters in Geography at the same university. His teaching and research interest focus on the application of  Geographical Information Systems (GIS), Remote sensing as spatial decision-making tools for various fields including land use, disaster management, crime incidence mapping , health facility assessment.

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Published

2021-09-21

How to Cite

JAYASINGHE, A. D. S., & WITHANAGE, N. C. (2021). GEOGRAPHICAL INFORMATION SYSTEM-BASEDMULTI-CRITERIA DECISION ANALYSIS OF POTATO CULTIVATION LAND SUITABILITY IN WELIMADA DIVISIONAL SECRETARIAT, SRI LANKA. Potato Journal, 47(2). Retrieved from https://epubs.icar.org.in/index.php/PotatoJ/article/view/115723