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Leizerovich EE 《Soviet geography》1980,11(8):501-507
The author provides an analysis of trends in population distribution for selected areas of the Soviet Union. Changes in the degree of population concentration in the Russian SFSR are examined within various economic regions and micro-regions, and factors contribution to population decline are discussed 相似文献
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白云鄂博地区碳酸岩墙及岩墙旁侧石英岩中的包裹体研究 总被引：11，自引：6，他引：11
白云鄂博的碳酸岩墙中包裹体类型有多子晶包裹体、两相水溶液包裹体、含CO_2三相包裹体和含子晶三相包裹体,岩相学和显微测温结果表明,这些包裹体与国外典型的碳酸岩中的包裹体具有很大程度的一致性,反映了其岩浆成因特点;碳酸岩墙中旁侧的白云鄂博H2石英岩中含有大量的流体包裹体,主要类型为NaCl-H_2O包裹体、CO_2包裹体和H_2O±CO_2±固体的包裹体。包裹体的岩相学、显微测温、阴极发光特征、包裹体成分ICP-MS测定,激光拉曼研究等,揭示出石英岩中的包裹体捕获了来自碳酸岩墙的碳酸岩浆流体,提供了一种不可多得的直接研究碳酸岩流体的手段。 相似文献
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V.P. Butusova V.V. Vladimirov E.E. Leizerovich F.M. Listengurt E.M. Pertsik P.K. Vladimirov Yu P. Shulenin 《Geoforum》1976,7(3):215-221
Research of the interrelation between regional planning, division into economic districts and urban-planning, division into economic districts and urban planning is here emphasised. In the USSR development of a network of territorial economic complexes, economic districts including subregions of the II and III order, economic subregions and microdistricts is continuous. The outlook of regional planning is defined by the elaboration of its scientific theory including the geographical concept of regional planning. The use of geographical methods widens the scientific basis for the development of a systems approach and improves forecasting, the choice of aims and strategy of developing production, population distribution and the solution of ecological problems. The efficiency of regional planning depends not only on purely economic advantages, but on a more sensible use of nature. Regional planning is concerned with bio-economic systems, and must avoid conflict between the most important subsystems, natural and anthropogenic. Preservation of ecological balance has become the most important task of regional planning. When locating industrial enterprises in the process of regional planning, ecological factors are taken into account to an ever-increasing degree. The main tasks of regional planning concerning the distribution of agriculture stem from the aim of interrelated development of all elements of the agrarian and industrial complex. During the scientific and technical revolution the distribution of production orientates more and more and not towards individual towns but towards a system of populated areas. Systematic improvement of conurbations and their transformation into group systems of populated areas, regulated according to plan and having a broader economic and territorial base, are the most important task of regional planning and urban development. 相似文献
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