dc.description.abstract |
City is the important area of earth's surface
material, energy, and information exchanging; also it is
the centre in national, regional political, economic,
scientific and cultural aspects. A mere 10% of the global
population were urban dwellers in 1900, but that
percentage exceeds 50% now (Grimm et al. 2008).With
the rapid economic development, city is suffering from a
series of serious problems such as air pollution, solid
waste pollution, vegetation reduction, deterioration of
water quality and living environment. According to
latest predictions, 4.9 billion people, or 60% of the
world’s population, is expected to move in urban
locations by 2030. The studies and analysis show
significant differences in urban population (Herban et
al. 2011). Those studies showed that there is a huge
discrepancy between the changes in developed regions
and the less developed regions.
Remote sensing imagery enables rapid and efficient
quantification urban eco-environment and it gives a new
insight for urban environmental research. A wide range
of urban remote sensing applications is available.
With the availability of super high resolution remotely
sensed imageries and multi-source remote sensing data,
there is a great need to transform remote sensing data
into useful information that we need for urban studies.
High resolution remote sensing data make a clear
potential to help humans to make a better
understanding of their living places, to measure the
biophysical parameters of urban vegetation, to model
the environmental process in urban areas, to map the
urban features quickly, to update the urban land covers.
Romania has many areas with different environmental
problems concerning: air quality, water quality, soil
quality, forest health, accidental pollution caused by the
chemical industry, thermal processes or oil refineries.
They represent a serious threat to the environment and
implicitly for the population. Disasters have also a
negative impact on the environment as they are an
obstacle to achieve sustainable development.
Romania has endured the most sizeable and rapid
urban change during the last decade. At the same time,
this is a territory of substantial importance due to its
significant natural and economic resources, as well as to
its sensitivity with respect to unfavourable ecological
impacts. Some of urban areas have undergone a
considerable change in the past ten years. Therefore,
urban dynamics monitoring of Romania appears to be
an essential factor to the integrated urban areas
management. So, we can work on urban environment
models in order to understand the mechanism of
environmental issues better. With the study on these
mechanisms of environmental issues, we can make a
better urban environmental planning to achieve the best
urban environmental benefits. The level of the living
environment of humans, animals and plants is rising as
a result of the improvement of the ecological
environment. This is not only beneficial to human health
but also to the protection of endangered plant and
animal species. The study has great significance to
human and nature. |
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