Soil data definition for hydrologic response unit analysis in SWAT model of Langkawi Island, Malaysia

Authors : Mohd Rosli Nur SUHAİLA, Ahmad ZUHAİRİ, Azman Nur Syahira AZLYN, Mustapa Mohd ZAİNİ

Pages : 69-76

Doi:10.18393/ejss.816417

View : 104 | Download : 6

Publication Date : 2021-01-01

Article Type : Research Paper

Abstract :Soil and water assessment tool insert ignore into journalissuearticles values(SWAT); have been assessed to examine environmental conditions and watershed scale, particularly for water quality and natural resource management. In this study, SWAT model has been applied to the main river basins in Langkawi Island. Soil data, one of the spatially distributed data needed for SWAT model interface. Currently, no soil interpretation record insert ignore into journalissuearticles values(s5id); data code available in readable format for user soil SWAT database for Langkawi Island. The purpose of soil data definition is to create a soil input data setup for hydrologic response unit insert ignore into journalissuearticles values(HRU); analysis in SWAT model which includes soil map, soil type, soil texture, and soil s5id code. Study by Leman et al. insert ignore into journalissuearticles values(2007); showed that geological formation of soil in Langkawi consists of alluvium, granite, Machincang, Setul, Chuping and Singa formation. The dominant soil group was Acrisols insert ignore into journalissuearticles values(soil unit name: Orthic Acrisols, Ao); and the dominant soil texture classification was sandy clay loam. MY4284 and MY4464 defined as the code for soil interpretation record number insert ignore into journalissuearticles values(s5id);. Percentage of coverage for MY4464 was insert ignore into journalissuearticles values(62.21%; 10,865.87 ha [26,850.15 ac]); and the percentage of coverage for MY4284 was insert ignore into journalissuearticles values(37.79%; 6,599.8 ha [16,308.46 ac]); within the selected watershed boundary of Langkawi Island. This data setup has been successfully tested and fully functional for usersoil database of Langkawi SWAT model analysis.
Keywords : Hydrologic response unit HRU, analysis, Langkawi Island, soil input data setup, soil S5id code, soil and water assessment tool

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