مراقبة مخاطر التصحر في ناحية العباسي للمدة (1990-2018) باستخدام بعض المؤشرات الطيفية

Abstract

The title of the research (Monitoring the Desertification Risks in the Abbasid District) was chosen to express the exacerbation of the desertification risks that people face in the modern era in various dry, semi-dry and sub-humid environments, and this phenomenon has expanded and spread, as the area is administratively located (the Abbasid district) in the Hawija district within the governorate Kirkuk, which is 89 km 2 from the center of the governorate, and whose area is (508.3) km2, which equals (204133) dunums, between the two latitudes (º 37,17=,08-) and (º39, 46=, 59-) north and between longitude ) 43º, 25= ,01-( and (43º, 40=, 5-) east, which includes (12) agricultural districts. Modern geographic techniques have been used in analysis and interpretation, including remote sensing and geographic information systems (GIS) techniques for building a digital spatial database for the study area. The environmental changes taking place in the ground cover and its uses for the period between (1990-2018), as they are shown to us through maps derived from space data for the visuals (Land sat 5 Mss) on the date of (3/24/1990) and visible * (Land sat 8 oil) On (26/3/2018) as well as designing four indicators for the period (1990-2018), the Urban Difference Index (NDBI) and Evidence of vegetative evidence (NDVI), biological cortex index (CL) and water difference index (NDWI), as values vary and indicate decline and degradation in vegetation areas for natural and human causes.