146
A. Shalaby and H. S. Khedr
indicates the results or production of human activities and interactions with land
cover types.
The population in Egypt is increasing with an annual rate of 2.8%, where it
increased from 59 million in 1996 to 96 million in 2018, and has so far shows no
definite signs of a slowdown. Urban expansion is an unavoidable procedure because
of the rapid growth of population and economic development. The increase of builtup areas, which generally occurs at the expense of agricultural land, may lead to very
bad ramification such as land degradation and desertification (Shalaby et al. 2004).
The impact of the increase in population density leads to cumulative stress on soils, a
reduction in soil per capita from 0.12 ha (1950) to 0.06 ha (1990) (Suliman 1991) and
in 2009 reached to 0.04 ha (CAPMAS 2009). Therefore, it is essential to define the
rate and the tendency of the land cover change for the development decision making
in order to find rational land use policy (Shalaby and Tateishi, 2007).
Accurate temporal change detection of land use/land cover of the earth surface
offers the base for understanding the interactions and relations between people and
nature(Lu et al. 2004).
Singh (1989) described the digital change detection, it is the process of describing
and/or determining changes in the land-use and land-cover areas based on multitemporal remote sensing data ().
Trajectory classification is one of the mathematical methods used for detecting
change, which have other five classes, containing segmentation, differencing, thresholding, regression, and statistical boundary. Each class has its own strengths and limitations. Therefore, each method should be thoroughly understood by users before
starting change detection with Landsat time series (Zhu 2017).
2 Study Area
2.1 Location
The study area is Dakhla Oasis, which lies in the middle of the Western Desert in
the New Valley governorate as shown in Map 1. It lies between longitudes 28
o 30
\
and 29
o 22
\ east and latitudes 25
o 29
\ and 25
o 55
\ north. Study area elevation ranges
between 209 m to 568 m as shown in Map 2.
2.2 Demographic Trend
Dakhla Oasis includes about twenty-five main villages. Population of the Dakhla
Oasis increased from 80,226 in 2006 to 87,933 in 2016. Kato et al. (2014) showed
that, generally, the growth of population was very slow in Dakhla Oasis up to 1960 by
4,496. Then, the population increased suddenly untill 1976 by 25,070. This increase
A. Shalaby and H. S. Khedr
indicates the results or production of human activities and interactions with land
cover types.
The population in Egypt is increasing with an annual rate of 2.8%, where it
increased from 59 million in 1996 to 96 million in 2018, and has so far shows no
definite signs of a slowdown. Urban expansion is an unavoidable procedure because
of the rapid growth of population and economic development. The increase of builtup areas, which generally occurs at the expense of agricultural land, may lead to very
bad ramification such as land degradation and desertification (Shalaby et al. 2004).
The impact of the increase in population density leads to cumulative stress on soils, a
reduction in soil per capita from 0.12 ha (1950) to 0.06 ha (1990) (Suliman 1991) and
in 2009 reached to 0.04 ha (CAPMAS 2009). Therefore, it is essential to define the
rate and the tendency of the land cover change for the development decision making
in order to find rational land use policy (Shalaby and Tateishi, 2007).
Accurate temporal change detection of land use/land cover of the earth surface
offers the base for understanding the interactions and relations between people and
nature(Lu et al. 2004).
Singh (1989) described the digital change detection, it is the process of describing
and/or determining changes in the land-use and land-cover areas based on multitemporal remote sensing data ().
Trajectory classification is one of the mathematical methods used for detecting
change, which have other five classes, containing segmentation, differencing, thresholding, regression, and statistical boundary. Each class has its own strengths and limitations. Therefore, each method should be thoroughly understood by users before
starting change detection with Landsat time series (Zhu 2017).
2 Study Area
2.1 Location
The study area is Dakhla Oasis, which lies in the middle of the Western Desert in
the New Valley governorate as shown in Map 1. It lies between longitudes 28
o 30
\
and 29
o 22
\ east and latitudes 25
o 29
\ and 25
o 55
\ north. Study area elevation ranges
between 209 m to 568 m as shown in Map 2.
2.2 Demographic Trend
Dakhla Oasis includes about twenty-five main villages. Population of the Dakhla
Oasis increased from 80,226 in 2006 to 87,933 in 2016. Kato et al. (2014) showed
that, generally, the growth of population was very slow in Dakhla Oasis up to 1960 by
4,496. Then, the population increased suddenly untill 1976 by 25,070. This increase