APPLICATION OF GEOSPATIAL TECHNOLOGIES FOR SUSTAINABLE IRRIGATION AND RECLAMATION OF SALINE SOIL

摘要

Major portion of the rainwater goes to ocean as runoff via network of manmade as well asrnnatural drains. The rainwater going as waste can be utilized for sustainable irrigation byrnimprovement of groundwater quality and reclamation of saline soils. In this paper the applicationrnof geospatial technologies has been discussed for making strategy for improvement ofrngroundwater quality and reclamation of saline soil. The strategy include the application ofrngeospatial technologies for management of rainwater and its harvesting by (ⅰ) diverting thernrainwater to the groundwater by various techniques of artificial groundwater recharge to increasernthe quantity and to improve the quality of groundwater for irrigation and other purposes, and (ⅱ)rndiverting the rainwater to irrigation fields for the purpose of leaching for reclamation of salinernsoil. The techniques shown in (ⅰ) or (ⅱ) or both may be used depending upon the site conditionsrnand other affecting parameters. The geospatial technologies like remote sensing, GIS and GPSrncan be applied for the purpose of preparing strategy. Above indicated strategy has been discussedrnin this research paper with their multi advantages. A case study of Surat (India) is also includedrnin the paper to highlight the application of geospatial technologies.