Estimating the impact of hail on agricultural land is needed in order to streamline damage reduction methods. In this regard, hail risk maps were prepared for the region of Moldova for the main types of crops (wheat and rye, corn, potato, sugar beet, sunflower, vegetables, orchards and vineyards). The methodology that we used consists in determining the risk map, as the product between the hazard map (average annual number of days with hail), the exposure map (agricultural crop value) and the vulnerability map (the percentage occupied by a certain agricultural crop in the administrative units). Areas with severe hail risk are in the eastern half of Vrancea County, the western part of Galati County and the northeastern part of Iasi County, where there are large areas cultivated with vines, orchards and vegetables. In Vaslui County, the most exposed ATUs are those in the vicinity of Bârlad, Fălciu Hills and the Huși wine area. Most AUs in Bacău and Suceava counties, in the southern part of Neamț County, are included in the medium and high-risk classes due to the suitable conditions for cultivating most plants and the higher frequency of hail. The ATUs from Botosani County are included in the low and medium risk classes. The lowest level of risk is registered in the case of AUs from the mountainous area, the Curvature Subcarpathians and the areas with higher altitudes from the Central Moldavian Plateau and Tutova Hills.
The present paper aims to highlight the impact of the partial or total drying of the Nuntași and Tuzla lakes (from the Danube Delta Biosphere Reserve) as a result of intense drought phenomena on groups of waterfowl that are encountered in this region. Our analysis combined satellite remote sensing techniques with bird observations that were made monthly during the analyzed period, corroborated with the meteorological context of the time interval that was taken into account. The results of the satellite image processing show a partial drying in 2013 and a total drying in 2020 of the Nuntași and Tuzla lakes, which were caused by both natural factors (drought) and anthropogenic factors (inadequate management of the area—e.g.,: communication channels with surrounding lakes are clogged). These situations have led to repercussions for groups of birds, which behave differently depending on their ecology. Pelicans and swans are the most affected birds, they leave the area in the absence of water, whereas gulls and terns are not affected by the decrease in the water surface, they even increase their numbers in such conditions. Our study also shows that from 2010 to 2020 the largest numbers of birds (total numbers of birds), with the exception of pelicans, were recorded in 2013 and 2020, more precisely in the years when the water surface decreased considerably. Another important feature of this paper involves highlighting how fragile an ecosystem can be in the context of climate change, but also how important it is to involve human society in maintaining the adequate conditions for an ecosystem that is part of one of the most important biodiversity hotspots on the planet, the Danube Delta Biosphere Reserve.
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. IntroductionThis article aims to map out the impact of human activity in the region of Moldova-Romania. In order to realize the cummulative HII (Human Influence Index) we used a series of parameters like: Population Density, Railroads, Major Roads, Nighttime Stable Lights Values, Urban Polygons, Land Cover Categories (urban areas, irrigated agriculture, rain-fed agriculture etc.), but in our study we focused on the direct measures of human infrastructure and population that have the most immediate impact on wildlife and wild lands and for which geographic data were readily available. Although they have important consequences for terrestrial ecosystems, effects of pollution, global warming, increased exposure to ultraviolet radiation, and other global phenomena, are not included in this study. We were able to determine the degree of anthropic footprint or the level of intensity of disturbing influence in the natural landscape by monitoring the effect of anthropogenic stressors and quantifying the amount of stress within our studied area, thing that brought out also a stock of information about environmental quality and the way its being conserved. Human pressures are thought to be increasing
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