SPATIAL PREDICTION OF THE CONTENT OF CARBONATE MINERALS AND GYPSUM AND ITS RELATIONSHIP TO THE FORMATION OF HEAT ISLANDS USING THERMAL IMAGING | ||
| ANBAR JOURNAL OF AGRICULTURAL SCIENCES | ||
| Article 16, Volume 19, Issue 2, December 2021, Pages 329-342 PDF (1.68 M) | ||
| Document Type: Research Paper | ||
| DOI: 10.32649/ajas.2021.176223 | ||
| Authors | ||
| S. M. Al-Juraysi; Q. K. Al-Obeidi | ||
| Department of Soil and Water Resources, College of Agriculture, University of Anbar, Ramadi, Iraq | ||
| Abstract | ||
| The study area was chosen to the south of a Haditha lake. It is located between longitudes 41º 42 '02 "and 42º 27 03" E, and between longitude 34º 02 24 "and 34º 32 08" N, Western desert region at borders of Al-Anbar Governorate in the lower valley unit. It occupies an area of 186240 ha., Thermal units were isolated using the thermal image and 6 pedon were determined, which were accessed using a GARMIN GPS device, based on the Landsat8 satellite image captured on 7/25/2019, use the coefficient. The correlation and the simple linear regression equation between the temperature and each of the lime and gypsum in the soil for the surface horizon. The values for both lime and gypsum were projected using temperature, and the values of the image's pixels were converted into quantitative values for the content of lime and gypsum. The results showed that the study area included five thermal ranges, which included water bodies with an area of 50,300 hectares with a rate of 21.26%, whose temperature ranged from 26-43 degrees Celsius, and land areas with an area of 186,240 hectares, with a rate 78.74%, it was classified into four classes, as the first class occupied an area of 4618.75 hectares with a rate 2.48% of the study area, as it a temperature of 43-46 degrees Celsius, the second class, which had a temperature of 46-49 degrees Celsius, it occupied an area of 78909.89 hectares, equivalent to 42.37% of the study area. The third class had a temperature of 49-52 degrees Celsius and occupied an area of 39873.98 hectares, with a rate of 21.41% of the study area, and the fourth class, which recorded a temperature of 52-55 degrees Celsius, occupying an area of 62837.38 hectares, with 33.74% of the study area. The Spatial prediction values for lime and gypsum were 380 g/kg and 375 g/kg, respectively. The area of Spatial Completion calcareous soils with a content of more than 225 g/kg was about 68517.7 hectares, with 36.79%, while the area of gypsum soils with a content of more than 150 g/kg was about 78595.9 hectares, with 42.21% of the study area. | ||
| Keywords | ||
| Spatial prediction; Carbonate minerals and gypsum; Heat islands; Thermal imaging | ||
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