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Environment

Volume XIV |

Change of land-use patterns in a suburbanized area: The Bucharest municipality as case study

Abstract: There were realized numerous geographical, sociological and economic studies with special regard to land use change on the territories around Bucharest Municipality. Our paper is focused on the dynamics of the spatial patterns of land use types in the post-socialist period at the level of first tier of administrative-territorial units (towns and rural communes). The boundaries of the study area were defined from the viewpoint of the rural-urban fringe approach. We applied methods of multivariate statistics and hierarchical agglomerative clustering in order to identify changes in the distribution and use of land resources. Our findings confirm previous achievements about uneven development of the Bucharest’s outskirts and provide more details with regard to changing land use patterns. Thus, we identified and confirmed the opposition between north and south, different spatial patterns of land use distribution between internal and external periphery of the study area. We believe that reducing these differences through a balanced economic development policy would generate development opportunities for both the capital city and settlements in its suburban area. In order to obtain better results, each of the resulted land use cluster requires tailoring of the general economic development policy to its specific needs.

Volume XIII |

Quality assessment indicators of surface waters and soils in the vicinity of the former sulfur mine in the Călimani Mountains

Abstract: A native sulfur mineralization was quarried out intensively for a period of almost 30 years in Călimani Mountains, the Eastern Carpathians. The waste resulted from this exploitation activity was stored in four waste dumps, while the residues resulted from the processing were disposed in a settlement pond. Although mining operations closed in 1997, the remains of the former sulfur mining are listed among the major pollutants in Romania.The present paper intends to present a preliminary analysis and the current state of the impact of pollution of the former mining exploitation on different environmental factors, by assessing some quality indicators of surface waters and soils. Water and soil samples from different areas situated in the proximity of the former mine were collected and analyzed, performing pH, conductometric, turbidity, chemical and microbiological determinations.The results of this study demonstrate that the pollutant potential of the former sulfur mining from the Călimani Mountains is still very high, a fact proved by the acidic pH of the surface waters and soil, high turbidity and conductivity of the water respectively by the high number of impurities detectable through a simple preliminary chemical analysis.

Volume XIII |

The environmental impact of arable land in a protected area of community interest. Case study: ROSCI0123 Măcin Mountains, Romania

Abstract: Plant cultivation activities represent the widest form of environmental agression at global scale. Their sustainability influences the stability of natural ecosystems at local, regional and global level. In this context, the aim of this study is to assess the sustainability of arable land in ROSCI0123 Măcin Mountains using the Pimentel- Eulenstein model. The model takes into account as input data various parameters characterizing the agricultural activities in the whole area occupied by six administrative units (mechanization, chemical treatment, irrigation etc.), this way assesing the energy efficiency and sustainability of crop plants. The results show that the exploitation of arable land in ROSCI0123 Măcin Mountains is done unsustainably in terms of energy efficiency, leading to a medium risk of affecting the valuable environmental components. Under these conditions, improved farming management is a key component in the management of ROSCI0123 Măcin Mountains.

Volume XIII |

The Mateiaș limestone quarry (Southern Carpathians): changes in spatial extent and local perception on the related environmental issues

Abstract: The various natural resources and the industrialization policies implemented during the communist regime have resulted in the opening of many mines and quarries, inclunding the Mount Mateiaș exploitation. The aim of this study is to give warning against open pit mining, which has a direct and conspicuous impact on landscape dynamics and the cultural-historical value of Mount Mateiaș. The research methodology consisted in field observations, accomplished during the period 2009-2012, the analysis of limestone quarry expansion by using GIS techniques, and the application of a semi-structured interview, the results of which were processed subsequently in QSR-Nvivo 10. The analysis and processing of cartographic materials highlighted that during the interval 1979-2012 strip mining has dramatically altered the topography (by excavation works, land leveling, access road construction, accelerated slope erosion, collapses, torrential erosion etc.). These add to other processes and phenomena that have a negative impact on the environment (soil loss, massive deforestations, air pollution with suspended particles etc.). Despite these realities, most people living in the neighborhood of Mount Mateiaș (the Valea Mare-Pravăț, Dragoslavele, Stoenești and Câmpulung communes) deem that quarrying is vital for the development of local communities. Under the circumstances, the only economically productive and ecollogically protective measure advanced by the authors is the identification of possible solutions for the restauration of the quarry, given that limestone exploitation will not end in the medium term. Last, but not least, we suggest that the results of the present investigation be included in the pre- feasibility and feasibility studies of a potential future rehabilitation.

Volume XIII |

Assessing long-term changes in forest cover in the South West Development Region. Romania

Abstract: The paper is discussing the importance of assessing forest dynamics based on several statistical and cartographic supports considered to be the most representative for the last century. The selected maps are able to point out the forest cover changes for three time frames (1912-1971; 1971-1990; 1990-2006) related to the relevant multi-temporal statistical and cartographic data as well as historical events such as land reforms, political changes related to the transition to the intensive and extensive communist agriculture and the post-communist period strongly related to the decolectivisation and privatisation of agriculture leading to the emergence of new types of property, an excessive land fragmentation and deforestation (illegal logging). The authors are aiming to analyse land use conversion and forest covered areas dynamics in relation to the main socio-political and natural driving forces by means of GIS methods (binary change index and trend index) based on a series of significant cartographic documents and a large and complex geodatabase.