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APPRECIATION ON BIODIVERSITY IN SEVERAL PERMANENT GRASSLANDS IN TIMIS COUNTY, ROMANIA. A CASE STUDY
Abstract
The biodiversity of grassland ecosystems is strongly affected by climatic changes, i.e., by the galloping progression of desertification. These aspects are more and more visible on permanent grasslands (communal pastures). Most researchers in grassland science consider as a major priority the conservation of biodiversity and of the productive potential of permanent grasslands, given that the decrease in the number of livestock has been accelerated. Thus, in recent years, they started case studies on permanent grasslands affected by different factors. They have also developed regulations and methodologies on the sustainable management of permanent grasslands in different forms of property. From this perspective, results of a case study on permanent grasslands located at different altitudes exploited differently both in terms of animal load and of their improvement measures are presented in this study. The method of inventorying the vegetation is that of the double meter or the linear method with which different indices could be quantified (Shannon-Weaver Index, PV). The method of correlations used in this case study highlights the result of the interaction of the analysed parameters as a starting point for the future modelling of the time evolution of grassland areas. The values obtained show that biodiversity is not equally affected in all analysed cases.
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