In this study the urban system of the governorate of Lattakia has been examined
through the applicability of measurements of the equality of spatial distribution patterns of
cities (Demangeon Index and Lorenz curve), and those of Primacy and cities
size
distribution patterns (the Law of Primate city of Mark Jefferson, 1939, the Index of
Primacy of Stewart, and the hierarchical order of city through the Rank-size Rule - George,
K. Zipf, 1949). It has been identified on the size of the imbalance equilibrium in the system
urban cities through Urban Isostastic Index. The results of the study showed a clustered
patterns of the spatial distribution of urban centers according to the value of Demangeon
Index (0.42) and unequal distribution of urban population to the cities (75% of urban
population are distributed on 15% of cities). It showed also a great domination of the
primate city of Latakia on the urban system where the population volume was (6.1) time
bigger than the volume of the next cities according to Primacy Index; a great decrease of
the real value of the next cities comparing with the theoretical value of Law of Primate
City (16.4%) against (67%), and disability to applying the Rank-size Rule.
Groundwater is one of the major sources of exploitation in arid and semi-arid
regions, Thus for protecting groundwater quality, data on spatial and temporal distribution
are important. Geostatistics methods are one of the most advanced techniques f
or
interpolation of groundwater quality. In this research, IDW, Kriging methods were used for
predicting spatial distribution of nitrate NO3
-. Data were taken from 21 wells study within
eastern Damascus's Ghouta.
After normalization of data, variograme was drawn. The less RSS was used, so
Spherical model was the best. By using cross-validation and RMSE, the best method for
interpolation was selected; Results showed that Kriging method is superior to IDW
method.
there is a big spatial dependence for nitrate variable that amounts to 2.2 %. Finally,
maps of distribution of nitrate in groundwater were executed by Kriging method, in
addition to executed maps that show goodness of groundwater for drinking and irrigation.
Then it was prepared map of Probability Map of nitrate at threshold 50 mg/l.
