Keywords : Remote Sensing

A Morphometric Analysis of Horan Valley By Using Remote Sensing and Geographic Information Systems

Emad Telfah Abdelghani; M. K. Ibrahim; I. M. Abdel Hameed

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2017, Volume 15, Issue 1, Pages 37-54
DOI: 10.32649/aagrs.2017.129073

This study was conducted to know the possibility of creating morphometric geo database for Horan valley which is the greatest valley in western desert by using remote sensing and geographic information systems. Digital Elevation Model (DEM) was used to measure the cadastral, morphological or hydrological morphometric properties using the ArcGIS V.10.2 program. These properties considered an important database to make the future planning for dry or wet valleys and rivers basins, which reduce time, expenses and efforts to study the wide area regions. The values of longitudinal section, average of circumference, circularity ratio, circumference compactness factor, elongation factor, form factor, length to width ratio, relief ratio, relative relief, hypsometric integration, basin tissue, the value of rugged, drainage longitudinal density, numerical drainage density, and the Constant of Channel Maintenance, in the Horan valley are 2.562 m km-1, 1307 km, 0.13, 2.77, 0.47, 0.13, 7.3, 2.32 m km-1, 0.64 m km-1, 21.26 km2 m-1, 8 valleys km-1, 0.77, 0.92 km km- 2, 0.61, and 1.08 km2 km-1, respectively.

Study of vegetation and water covers changes in the district of Ramadi by using remote sensing and Geographic Information Systems( GIS) technologies.

Mashal Mahmood Fayaadh Al-jumaily

ANBAR JOURNAL OF AGRICULTURAL SCIENCES, 2012, Volume 10, Issue 1, Pages 156-173

This research aims at monitoring changes in vegetation and water covers in the district of Ramadi, for the period 1990 - 2010, by using the technologies of Remote Sensing and Geographic Information Systems (GIS).The researcher made use of three Satellite images for three years1990-2001 -2010 of the types TM, ETM +, for winter seasons of these years.
For the purpose of land cover classification, several steps have been carried out namely: A field work has been done to identify the type of land cover, for many locations of the area under study , and determine its coordinates using a (GPS). Application of Supervised Classification was applied to the search area, as well as the equation of manual vegetation NDVI was used to detect changes in vegetation cover and its density.
The results indicate that ; the area of water cover was 636 km ² in 1990, decreased to 463 km ² in 2001, and then to 355 km ² in 2010. The vegetation cover has been an area of 282 km ² in 1990, increased to 387 km ² in the year 2001, while becoming an area of 327 km ² in 2010.This was the result of the conditions of foreign occupation of Iraq and the drought conditions of the the region.