The dynamics of the green space in urban areas are key components for the urban environment monitoring options and of the urban planning strategies. In the European Union, specific regulations provide the quantitative measures for green space areas necessary for each inhabitant of a city. To assess the situation in the case of Bucharest, we used the multitemporal analysis of remotely sensed imagery based on Landsat archive available. This enabled us to characterize the possibility to monitor and assess the changes in the vegetation cover over a quarter of a century, and raised a series of issues based on the remote sensing observations and image processing. The quantitative assessment of the green spaces is further developed into proposals related to the green space provisions in urban planning, but also revisions of the quantitative measures used in regulations.
According to European Directives, transposed in national legislation, the Member States should organize separate
collection systems at least for paper, metal, plastic, and glass until 2015. In Romania, since 2011 only 12% of municipal
collected waste was recovered, the rest being stored in landfills, although storage is considered the last option in the
waste hierarchy. At the same time there was selectively collected only 4% of the municipal waste. Surveys have shown
that the Romanian people do not have selective collection bins close to their residencies. The article aims to analyze the
current situation in Romania in the field of waste collection and management and to make a proposal for selective
collection containers layout, using geographic information systems tools, for a case study in Romania. Route
optimization is used based on remote sensing technologies and network analyst protocols. Optimizing selective
collection system the greenhouse gases, particles and dust emissions can be reduced.
The main objective of this paper is to demonstrate the potential of multitemporal satellite imagery to be processed and used in documenting urban changes that took place over time, with limited resources involved and taking advantage of the opportunity to be able to use the satellite imagery available as open data. The possibilities to analyse and compare the written literature regarding the chronological evolution of a city with the patterns of Land Use/Land Cover obtained from the processing of satellite remotely sensed images of the respective scenery were investigated based upon a case study of a selected city. The extent of the prospects of using remote sensing based methods and multitemporal satellite imagery is also expressed as a result of this investigation.
Monitoring urban growth process and its patterns for the city of Bucharest was the starting point in our attempt to identify and propose a more general procedure for monitoring this type of process in Romania using remote sensing data. Several important technical aspects such as comparable data sources, comparable algorithms, interoperability issues as well as final presentation standards are discussed. The paper is meant to be considered as a basis for promoting a unitary technical approach concerning urban growth monitoring in Romania using remote sensing data.
KEYWORDS: Databases, Visualization, Legal, Geographic information systems, Vegetation, Chemical elements, Climatology, Internet, Pollution, Data processing
In the last decade, reducing urban pollution and improving quality of public spaces became a more and more important issue for public administration authorities in Romania. The paper describes the development of a web-GIS solution dedicated to monitoring of the green infrastructure in Bucharest, Romania. Thus, the system allows the urban residents (citizens) to collect themselves and directly report relevant information regarding the current status of the green infrastructure of the city. Consequently, the citizens become an active component of the decision-support process within the public administration. Besides the usual technical characteristics of such geo-information processing systems, due to the complex legal and organizational problems that arise in collecting information directly from the citizens, additional analysis was required concerning, for example, local government involvement, environmental protection agencies regulations or public entities requirements. Designing and implementing the whole information exchange process, based on the active interaction between the citizens and public administration bodies, required the use of the “citizen-sensor” concept deployed with GIS tools. The information collected and reported from the field is related to a lot of factors, which are not always limited to the city level, providing the possibility to consider the green infrastructure as a whole. The “citizen-request” web-GIS for green infrastructure monitoring solution is characterized by a very diverse urban information, due to the fact that the green infrastructure itself is conditioned by a lot of urban elements, such as urban infrastructures, urban infrastructure works and construction density.
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