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首页> 外文期刊>Polish Journal of Environmental Studies >Changes in Water Resources of Polish Lakes as Influenced by Natural and Anthropogenic Factors
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Changes in Water Resources of Polish Lakes as Influenced by Natural and Anthropogenic Factors

机译：自然和人为因素对波兰湖泊水资源变化的影响

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摘要

Processes of lake shrinkage as a result of the action of natural and anthropogenic factors in recent decades have been considerably accelerated. On the other hand, lake capacities may have increased as a consequence of damming. These changes are typically analyzed in relation to changes in lake area, while horizontal and vertical components are excluded. The aim of this study was to assess changes in morphometry in several lakes in central western Poland and to determine changes in water resources in selected lakes as a result of changes in their morphometry. These changes were analyzed based on archival data concerning the area and capacity of lake basins, collected from studies prepared by the Institute of Inland Fisheries in the early 1960s and current bathymetric studies. These investigations showed that within approx. 50 years a considerable decrease was recorded in the area of the analyzed group of lakes, amounting to 14.8% (i.e., 172.6 ha). As a result of changes in the area and shallowing of lakes, the water resources stored in lakes decreased by a total of 7.7%, which amounts to 3.6 million m(3). Referring to the factors determining the above-mentioned transformations, it was found that both climatic and anthropogenic conditions were disadvantageous. While in the study period no trends were observed for changes in precipitation, a significant increase in temperature was found, thus contributing to increased evaporation. This situation was compounded by human activity connected with land reclamation operations or agricultural activity.
机译：近几十年来，由于自然和人为因素的作用，湖泊的萎缩过程已大大加速。另一方面，由于筑坝，湖泊的容量可能有所增加。通常将这些变化与湖泊面积的变化进行分析，而将水平和垂直分量排除在外。这项研究的目的是评估波兰中西部几个湖泊的形态变化，并确定某些湖泊由于形态变化而引起的水资源变化。这些变化是根据有关湖盆面积和容量的档案数据进行分析的，这些数据是从1960年代初期内陆渔业研究所准备的研究和当前的水深研究中收集的。这些调查表明，大约50年以来，被分析的湖泊群面积显着减少，达到14.8％（即172.6公顷）。由于湖泊面积的变化和浅水，湖泊中储存的水资源共减少了7.7％，总计360万平方米（3）。参照确定上述转化的因素，发现气候和人为条件都是不利的。虽然在研究期间没有观察到降水变化的趋势，但发现温度显着升高，因此有助于增加蒸发。与土地开垦或农业活动有关的人类活动加剧了这种情况。

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