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A GIS based study on paddy land degradation in Eravur Pattu DS Division, Batticaloa, Sri Lanka

Author Affiliations

  • 1Department of Agric. Engineering, Faculty of Agriculture, Eastern University, SRI LANKA
  • 2 Department of Agric. Chemistry, Faculty of Agriculture, Eastern University, SRI LANKA

Int. Res. J. Environment Sci., Volume 2, Issue (11), Pages 84-87, November,22 (2013)

Abstract

Land degradation becomes a noticeable issue in worldwide. The lack of reliable baseline information on land degradation is a limitation towards its monitoring and mitigation. Mapping the spatial distribution of paddy land degradation is significant where the paddy cultivation is primarily practiced. The paper focuses on a detailed study in analyzing the spatial variability of paddy land degradation in the Eravur Pattu Divisional Secretariat Division, Batticaloa District, Sri Lanka. A questionnaire study was carried out among the farmers to identify the sites fall under paddy land degradation in the study area. Soil analysis was carried out to explore the variation of the soil chemical parameters such as pH, Electrical conductivity and Total dissolved solids (TDS) in the degraded paddy lands in the study area. The findings show that the above parameters were exceeding the standard limits in the degraded lands. The higher variation was observed in the lands adjacent to river aquifer. The spatial variation maps of these soil quality parameters were derived and integrated through GIS. The final integrated maps show the range of the soil parameters quality zones of the study area and provide valuable information of the paddy land degradation in Eravur Pattu Divisional Secretariat areas of Batticaloa District, Sri Lanka.

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