Search results for "Urbanization"
showing 10 items of 150 documents
Distribution and habitat selection of wintering birds in urban environments
1998
Habitat selection of wintering land-birds was studied in 31 human settlements in Finland. A total of 26 wintering bird species representing 5155 individuals were observed. Between-year variation (CVB%) and short-term fluctuation within one winter (CVW%) in species richness (CVB=10% CVW=15%) were low, as were total numbers of birds (CVB=22% CVW=24%) and populations of the most common bird species (CVB=20–40% CVW=15–47%). The most abundant bird species (e.g., Passer domesticus, Parus major and Pica pica) occurred in most of the study sites. The total densities of omnivorous birds, sedentary birds and bird species that commonly use feeding tables were higher in a heavily urbanized areas than i…
Modéliser la suburbanisation
2002
L’histoire de la suburbanisation de la population et de l’emploi, principalement aux Etats-Unis, permet d’identifier trois caracteristiques du phenomene. 1/ La suburbanisation se traduit par un etalement urbain tel que population et emploi s’accroissent plus en peripherie qu’au centre. 2/ La suburbanisation fait emerger de nouvelles concentrations d’activites dans la peripherie des villes-centres et donne naissance a des structures urbaines multicentriques. 3/ La suburbanisation differencie les contenus et les fonctions economiques des centres et recompose les centralites urbaines. Dans ce cadre, la suburbanisation se presente selon des modalites differentes selon les epoques et les regions…
Evaluation of historical atmospheric pollution in an industrial area by dendrochemical approaches
2019
International audience; We conducted a dendrochemical study in order to evaluate the exposure of territories and 19 populations to different types of pollutants and to characterise the history of pollution in one of the 20 most intensely industrialised areas of Europe: the industrial port zone of Fos, also heavily 21 urbanised. 22 To perform the study, two tree species have been selected, Pinus halepensis and Populus nigra, on arural plot located roughly 20 km away from the industrial harbor, an urban plot located in the city of Fos-sur-Mer and an industrial plot. Our study indicated that poplar was a more relevant model forthe dendrochemical studies exhibiting a higher bioaccumulation capa…
Contact with Nature as Essential to the Human Experience
2021
Human contact with nature is more important than ever before considering the global confinement brought about by the COVID-19 pandemic, the increased urbanization of society, and increased rates of mental disorders and threats to human well-being. This article conveys the importance of contact with nature from three perspectives: historical, sociocultural, and scientific. These perspectives convey the many ways in which contact with nature is essential to human life, the multiple ways in which this is expressed, and the broad range of benefits this has. The case for preserving the natural environment continues to be made in light of the dangers of climate change, the deleterious effects of …
Waterfront and Transformation in Contexts of Conflict
2016
This chapter defines in what way the seaside and the waterfront can be place of conflicts among infrastructures, production, unplanned urbanisation, bathing tourism and many other activities. The last section of the chapter describes synthetically the study case of Saint-Nazare Submarine base and the terms of regeneration of a typically place of conflict, like a military area connected with the waterfront. The transformations underway in the waterfront areas present a variety of complex settlement dynamics that are ascribable to the infrastructural and productive nature of many activities, such as unplanned urbanisation, the pressures of bathing tourism and mass tourism, and the system of s…
Receiving water quality assessment: comparison between simplified and detailed integrated urban modelling approaches
2010
Urban water quality management often requires use of numerical models allowing the evaluation of the cause–effect relationship between the input(s) (i.e. rainfall, pollutant concentrations on catchment surface and in sewer system) and the resulting water quality response. The conventional approach to the system (i.e. sewer system, wastewater treatment plant and receiving water body), considering each component separately, does not enable optimisation of the whole system. However, recent gains in understanding and modelling make it possible to represent the system as a whole and optimise its overall performance. Indeed, integrated urban drainage modelling is of growing interest for tools to …
Assessing land condition as a first step to achieving land degradation neutrality : A case study of the Republic of Srpska
2018
Abstract Land Degradation Neutrality (LDN) is a key voluntary and aspirational target of Sustainable Development Goal (SDG) 15 which urges countries to protect, restore and promote sustainable use of terrestrial ecosystems, sustainably manage forests, combat desertification, and halt and reverse land degradation and halt biodiversity loss. A first and critical important step in the implementation of LDN is assessing the current land condition using not only active restoration of degraded land, but also targeting land degradation drivers behind the land degradation process. In a first step to achieve these goals, countries were provided a global dataset for three sub-indicators of land degra…
Urbanisation and Urban Regionalisation Processes in the Metropolitan Area of Palermo
2021
This article provides empirical evidence that helps to answer several key questions relating to the regionalisation processes in Southern European cities. Several studies have documented the effects produced by the urban regionalisation process, especially in terms of territorial resource consumptions and the formation of new territorial patterns, overlooking the evaluation of public information that has been lost in terms of space and prerogatives of public action in the new post- metropolitan urban space. Starting from this theoretical framework, the interpretation of the post-metropolitan transition of Palermo through the filter of living in its dual dimension of being the outcome of soc…
Forms and Processes of Settlement Pressure on Natural Systems
2021
The process of urbanisation is considered one of the most significant anthropic alterations of the environmental framework, and the present study attempts to understand the spatial characteristics of urban growth and their impacts on envi- ronmental components in two metropolitan areas of Sicily. Such rapid and unplanned urbanisation in Sicily has increased during the last three decades causing severe pres- sure on various natural resources. In this situation, the level of fragmentation and isolation of natural areas risks becoming worse. The question assumes a particular relevance in those local territorial portions, such as some urban and periurban areas, presenting relevant conditions of…
ENVIRONMENTAL AND GEOLOGIC INDUCED RISK: A CASE STUDY IN ALCAMO MARINA (TRAPANI, SICILY)
2009
Human activities often interfere with the natural evolution of the environment, even more so when any rule or criterion of respect for the environment or urban planning is followed. This, in addition to perturb the natural system, determines conditions for geological and environmental risks, particularly when acting on vulnerable areas, poorly suited for urbanization. In the present study, risk conditions for the site of Alcamo Marina, in the territory of the town of Alcamo (TP), are analyzed, which are determined due both to the geomorphologic setting of the territory and to a large number of human interventions. carried out under an irrational approach since the 70s, in this stretch of co…