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In the polluted forests in the neighbourhood of industrial centres mass appearance of some species of aphides, particularly resistant to SO₂, has been observed. The weakened trees being attacked by aphides and by other pests are not able to defend themselves and they perish. According to the author's opinion it is indispensable to undertake the preventive spraying with a solution containing the lacking...
The conifers prevail in 90 per cent in the forests of the Katowice province. These trees characterized by a low resistance to industrial pollution are susceptible to noxious insects. It is a heritage of the policy of the Prussian authorities from the period of an early capitalism when the forests were revived by planting new trees but only pines and spruces. The enormous pollution of the atmosphere...
The intensity of making use of the forests as the aim of walking, bicycle, longer and shorter stays does not decrease. This is accompanied by an activity that not always agrees with nature protection, e.g. faulty localizations of tourist — resting bases or an excessive concentration of touristic traffic. To overcome these negative factors theoretical information about the possibilities of tourist...
Eco-development means organic socio-economic growth where respect for nature combines with use of its resources. To achieve such harmonious development we shall be fully aware of all existing ties and relationships between three main spheres: production and services, residentiail facilities and consumptipn and geo- and biosphere. The author considers scales of values, motivation and behaviour of decision...
Автор представляет современную историю Бещадов с особым учётом многолетних усилий натуралистов добиться основания самого настоящего заповедника. Парк основанный в 1973 году был небольшой, — он состоял из 2-х отдельных изолированных частей и не свершал ни одного из требований ставляемых этого типа объектам. В 1989 году территория Парка значительно расширена до 15 700 гектаров, но всё-таки она не соответствовала...
During past 40 years, eastern border areas of Upper Silesia Industrial Region have underwent changes amounting to ecological disaster. Due to progressive urban development and industrialization, intensively built-up areas now cover 31% of the region with forest cover shrinking to 24%. At the same time huge industrial complexes have been built here, affecting environment for hundreds of miles around...
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