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   Evaluation of salinity intrusion in arable lands of Al-Batinah coastal belt using unmanned aerial vehicle (UAV) color imagery  
   
نویسنده al-rahbi sawsana hillal ,al-mulla yaseen ahmed ,jayasuriya hemanatha
منبع journal of agricultural and marine sciences - 2019 - دوره : 24 - شماره : 1 - صفحه:44 -50
چکیده    Salinity by seawater intrusion due to excess groundwater pumping for irrigation is a major environmental challenge in the coastal areas of the sultanate of oman. increasing salinity levels moving inward the arable lands is happening in a rapid manner. thus, salinity needs to be evaluated and quantified using a fast and accurate method. the objective of this study was to estimate salinity intrusion in al-batinah coastal belt using color aerial imaging. the study was conducted in five randomly selected sites at increasing distances from the seashore of al-suwaiq area in al-batinah region of northern oman. color aerial images were acquired for each site with an unmanned aerial vehicle (uav). images were enhanced by orthorectification in envi software. a green leaf index (gli) was obtained from each site image using matlab software. image analysis results were compared with the results of analyzed soil and water samples taken for ground-truth verification. there was a strong negative correlation between the distance from the seashore and the soil ec of each site (r = -0.95). similarly, the mean value of gli increased as the salinity levels decreased, r= -0.96 and -0.92 for soil ec and water ec, respectively. we demonstrated the possibility of the use of color images taken by a uav to accurately quantify the effect of soil salination on vegetation along the costal belt.
کلیدواژه Seawater Intrusion; Salinity Dynamics; UAV; Image Processing; GLI
آدرس sultan qaboos university, college of agricultural and marine sciences, department of soils, water and agricultural engineering, Oman, sultan qaboos university, college of agricultural and marine sciences, department of soils, water and agricultural engineering, Oman, sultan qaboos university, college of agricultural and marine sciences, department of soils, water and agricultural engineering, Oman
 
     
   
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