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Adrian Ursu, Marius Andrei, Dan Adrian Chelaru and Pavel Ichim

Abstract

The study analyses the spatial and temporal changes occurred in the builtup area of Iași city and its surrounding areas using cartographic materials from different time periods. The paper aims to highlight the areas where the most significant changes took place by identifying the main evolution patterns, generated by certain natural or human-driven factors. The results of the study were achieved by using specific photo-interpretation methods of the available orthophotomaps form 2006 and 2012, mainly using the professional GIS softwares TNT Mips 7.2., ArcGIS 10.2 and Global Mapper 11. The changes have lead on the one hand to the conversion of the former industrial areas and thus, the urban regeneration, but also to the periurbanization phenomenon, with major functional and structural effects.

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Adrian Ursu, Vasile Jitariu and Alexandru Ciutea

Abstract

This paper work tries to spatialize the effects of the anthropic activity on the environment, as the human society continuous development requires space, food, energy and resources and that has a significant impact. Trying to evidentiate this kind of pressure over the environment by cartographic materials, that combines all effects is an impossible endeavor, but highlighting affected areas in an irreversible manner by an increased degree of artificiality is a necessity for the future environmental policy, so, starting from this point we were able to apply a methodology on the studied area and we obtained a seth of conclusing results.

Open access

Maurice Olivier Zogning Moffo, Maurice Tsalefac, Adrian Ursu and Corneliu Iatu

Abstract

Built on a hilly relief, the city of Yaoundé is exposed to flooding since three decades. They caused human, material and environmental damages. Efficient management of this phenomenon by public authorities should go through a proper control of variables contributing to this hazard. Through various GIS applications based on multi temporal maps and primary data, we developed a detailed mapping of the main natural and human factors responsible for this phenomenon.

Open access

Ion Constantin, Baltag Emanuel Ştefan, Ursu Adrian, Sfîcă Lucian, Ignat Alina Elena and Stoleriu Cristian Constantin

Abstract

The avian habitats in Eastern Europe are poorly managed in last decades. It is of highly noteworthy influence importance to obtain more information regarding the link between birds’ presence and environmental features in wetlands to improve this poorly managed system. In our study we investigated the effects of the various habitat, landscape fragmentation and weather variables on the bird assemblages in Eastern Romania, described by diversity, species richness and abundance of non-passerine birds in wetlands. Poisson regression modelling revealed wetland area, wetland heterogeneity, proportion of open-water, density of patches and habitats, landscape shape and temperature conditions have a noteworthy influence on the bird assemblages (p<0,05). Our results suggest that the link between environmental features and birds’ assemblage, in our study areas could be dependent on the presence of the emergent vegetation (shelter / reproduction zones), the balance between open-water area (feeding / nesting zones) and also other variables, as the temperature, the presence of the human living facilities and/or intensive fish nurseries in the neighboring zones. Waterbird distribution and abundance in eastern part of Romania are driven by similar factors to other part of the world and this study could be one of the first published on the topic in a region where It is a lack of information on waterbirds ecology. Such studies would bring valuable information about the ecologic factors influencing the lives of the birds, in the areas that were not stueid before, resulting in better conservation efforts and wetland protection, in estern part of Europe.