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    STUDIA GEOGRAPHIA - Issue no. 1 / 2009  
         
  Article:   CLIMATIC AND ANTROPOGENIC CONDITIONS IN THE TRANSYLVANIAN DYNAMICS OF THE LANDSCAPES.

Authors:  V. SURDEANU, P. COCEAN, O. POP, I. RUS, I. IRIMUŞ, D. PETREA.
 
       
         
  Abstract:  

Climatic and Antropogenic Conditions in the Transylvanian Dynamics of the Landscapes. The reconstruction of the geographical landscape and of its spatial functions requires, on the behalf of the scientist, an inventory of all the factors with impact in structuring the landscape: geological, geomorphologic, climatic, hydrologic, biopedogeographic, human-made, geopolitical, cultural-historical, etc. The impact of the climatic and human-made factors is relevant for the Transylvanian factors through a substitution of the landscape functions during the last century. From a predominantly agrarian exploitation of the Transylvanian space (cultivation of cereals, technical plants, vegetables, pasturage, fishing), it turned to an increasing exploitation of construction rocks (lime stones, tuffs, sands and gravels) and wood (deciduous in particular), and also to a touristic development of the salty regions (balneal, climatic, cultural-historic and sport tourism). The methodology used in elaborating this paper comprises: an analysis of the climatic data on time series; reconstruction of the land usage systems; an analysis of the river beds dynamics as a result of the increasing exploitation of gravels and sands; an analysis of the human impact territorial models. The correlation between these precipitation values and the geomorphic processes in the Transylvanian environment, arguments the changes in the flowing regime of the rivers, the activation of some old landslides or generation of new ones, the elimination from the productive circuit of large agricultural and forested territories. The increasing of the primary resources exploitation especially that of wood and gravels, led to a major destabilization of the river-slope system, with long-term consequences. The materialization of impact is felt in the plane spatial dynamics of the Transylvanian river channels, in the mobilization on slopes of the deluvial materials, in the intensification of the linear erosion, in a decrease of the agricultural and fore

 
         
     
         
         
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