Geography Reference
In-Depth Information
The second local-level: represented in the entire natural borders of the ERB.
This level's outcomes were represented in three products. The first product
involved setting thematic maps to represent the natural coverage and the wide
general land uses distribution (LULC). Five classes counting on classification
system were accredited in this study. The used data and dates were: LANDSAT-
MSS-June-1975-60 m; LANDSAT-TM-April-1987-30 m; LANDSAT-ETM+/
SLC-Off/corrected-April-2005-15 m; and LANDSAT-TM-April-2007-30 m).
Here, for the automated classification process, one product (map) was obtained for
each year (coverage), which represented and illustrated the quality and quantity of
the spatial and temporal distribution of the natural coverage and uses of the lands.
A quantitative analysis of produced maps was set (statistical data and tables) to
compare, explain and analyze these numbers. Comparison was made between
recordings extracted from various sensory data, regarding spatial and spectral
resolution) positives, negatives, advantages and disadvantages).
The third product involved setting map/s representing the temporal and spatial
change of the natural coverage distribution as well as land uses, utilizing the pre-
classification change detection approach. For this, the LANDSAT-MSS-June-1975
and the LANDSAT-TM-August-2007 coverages were used.
Regarding the last two products, temporal and spatial changes were studied and
analyzed.
The third local-level: represented in distribution of the irrigated agricultural
projects within the natural limits of the ERB. The first product involved setting
maps of distribution and change of agrarian irrigated areas, temporally and spa-
tially,
for
the
following
data
and
years:
LANDSAT-MSS-June-1975-60 m;
LANDSAT-TM-May-1987-30 m;
LANDSAT-ETM+/SLC-Off/corrected
and
fused with ASTER-May-2005-15 m; and LANDSAT-TM-May-2007-30 m.
As for the second product, this was manifested by setting thematic maps to
represent the distribution of winter and summer basic crops in irrigated plantation
projects, the types of cultivations and their area. The used data for this purpose was
as follows: For the winter crops: LANDSAT-TM-May-1987-30 m; LANDSAT-
ETM+/SLC-Off/corrected and fused with ASTER-May-2005-15 m; and LAND-
SAT-TM-May-2007-30 m. For the summer crops: LANDSAT-TM-August-1987-
30 m;
LANDSAT-ETM+/SLC-Off/corrected
and
fused
with
ASTER-August-
2005-15 m; and LANDSAT-TM-August-2007-30 m).
The development of irrigated agricultural areas was calculated for the past
40 years.
5.1 Extraction of the Study Area
Extraction of the natural aquatic borders of the ERB in Syrian lands through the
use of the digital elevation model DEM available from the sensor data SRTM in
90 m spatial resolution, in addition to the DEM-data from ASTER in 30 m. Data
was imported to the ArcGIS 9.3 program using the following steps: Export raster
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