Impact of land use change on water quality of Jhang District Punjab, Pakistan
Paper Details
Impact of land use change on water quality of Jhang District Punjab, Pakistan
Abstract
The study was proposed to examine the land use changes and its impacts on ground water quality in Jhang District, Punjab, Pakistan. The land use change was detected by classifying Landsat TM (Thematic Mapper) from USGS. Satellite images of 1987, 1998 and 2015 with 30m, 15m and 15m resolution were used for classification. The study area was classified into four major categories i.e. barren, residential, vegetation and sites near water. Equal proportion of groundwater samples were collected from each land use class from study area. Groundwater samples were analyzed and their parameters were grouped on the basis of land use classes. The selected groundwater quality parameters of four land use classes were compared and contrasted with each other for calculating land use change impacts on ground water quality. The analyses revealed that from 1987 to 2015 agricultural land has significantly been decreased with the extension of built up areas in and around the urban centers while groundwater quality was found rapidly deteriorating in the urban settlements or around them. It was observed that the vegetative and sites around water have adequate quality of groundwater as compared to the areas near built-up and barren. The extension in built-up areas is responsible for loss in vegetation land use which results in degraded water quality. Land use analysis revealed the present research is a pioneer work in this region. The findings of the study are useful for future land use planning. It can help urban and settlement planner for their decision making.
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