GEORGE UNGUREANU, EDUARD BOGHITA, GABRIELA IGNAT, CARMEN LUIZA COSTULEANU, ANDREI VICTOR SANDU, COSTICA BEJINARIU, CATALIN RAZVAN VINTU EFFECT OF CLIMATE CHANGE ON PEDOLOGICAL MODIFICATIONS AND SOIL ARIDITY PROCESS IN VINEYARDS The general warming of climate disturbed the evolution of natural factors: water and soil, climate changes in the vineyard ecosystems and the summers became hotter and drier, the autumns are longer, the winters are shorter and seldom excessive, droughts are common and wet periods are excessively rainy. Soil contains plant nutrients, minerals, organic matter and seeds. It can also contain pesticides and toxic heavy metals. Building disturbs and loosens soil and can create large volumes of dust and debris. We consider that the results of these researches will have a special utility for both private farmers and companies, because in this area of NE region of Romania the viticulture has tradition and brings important income to growers. The goal of this paperwork was to analyses the influence of some factors such as variety of grapes and applied agro techniques on the growth and development of the grapevine and especially the impact of the applied technology on the productive potential of the surface unit, in order to improve some maintenance technologies of this species and the choosing of the best varieties which respond the best to the climate changes. The suitability of the grapevine culture results from the interference of the main ecological requirements of the species: light (light energy), temperature (solar energy), water (soil and air humidity), soil (root culture medium), nutrients and the air (the composition) for growth and development and the natural setting, which the area can offer to the studied species. The crop yield depends primarily on variety, on the interaction with the pedo - climatic factors and the applied technology. The necessity of the chosen topic is justified by the importance of the technological factors on the grapevine culture.