共查询到20条相似文献,搜索用时 0 毫秒
1.
2.
本文根据对尼罗河流域文明区地理环境变迁研究的结果,认为正是由于距今9000-4000年前亚非季风势力增强、季风雨量增加给尼罗河流域带来的湿润气候,为文明的形成和初步发展创造了优越的地理环境。因而尼罗河流域文明不仅仅是"尼罗河的赠礼",而应当更准确地说它是"季风雨的赠礼"。也正是由于季风雨的多寡在很大程度上制约着文明的盛衰,因此,由于从距今4000年前后开始的季风势力衰退和季风雨量锐减而导致的干旱化、沙漠化,则逐步吞噬了这一古老的文明。 相似文献
3.
本文提出与国家主权空间相对的非主权空间概念。讨论了主权空间与非主权空间的现时界线。阐明了非主权空间的性质、阐述了非主权空间研究的意义,并且讨论了围绕人类主要问题的非主权空间地理学研究内容和课题。 相似文献
4.
5.
6.
7.
The geochemical and engineering geological properties of the tuffs used in the rock‐cut cliff tombs of the Etruscan necropolis of Norchia were investigated to evaluate their susceptibility to different weathering agents and confirm their origin. For the first time, materials were characterized by X‐ray powder diffraction (XRD), Fourier‐transform infrared spectroscopy (FT–IR), thermogravimetric analyses (TGA, DGA and DTG), scanning electron microscopy (SEM–EDS) and energy‐dispersive X‐ray fluorescence (ED–XRF), and their different origins confirmed. Tests of material properties indicate that both tuffs are poorly durable, but one of them is less susceptible to weathering. Although tombs made with the more resistant material show limited surface weathering, they undergo severe structural damage because of stress release and plant root infiltration. This, combined with the microclimatic conditions established inside river canyons, can trigger rock falls, leading ultimately to the complete destruction of these tombs. 相似文献
8.
The use of fixed assets data as a geographical research tool is illustrated with reference to a rural rayon [minor civil division] of Kaluga Oblast, southwest of Moscow. The value of fixed assets by places is correlated with population size, the position of places within the system of settlement of particular state farms or collective farms, and distance from towns. The share of productive assets (farm buildings and equipment) is found to reach a maximum in places with populations of 100 to 200. In larger places, the share of productive assets declines because of the higher value of housing and the presence of most service facilities. The share of productive assets also tends to be low in suburban places where a substantial portion of the population commutes to nearby towns. 相似文献
9.
论中国东北地缘关系及因应对策 总被引:6,自引:0,他引:6
本文以历史、现状、未来的视角对中国东北及东北亚地区地缘关系的发展变化进行了总结和趋势判断。在此基础上,提出了因应对策,即:在地缘政治方面与俄罗斯合作,防御日美联合及其构建地区性防御体系;在地缘经济方面与日韩合作,促进东北亚经济的共同发展;在具体策略方面,推进对国内和对国外两个开放,以开放促开发,促进区际联系和国际合作,用地缘经济促进地缘政治的良性发展,为东北区快速发展营造良好的外部条件。 相似文献
10.
11.
A. F. Trëshnikov 《Eurasian Geography and Economics》2013,54(5):375-388
Academician N. I. Vavilov (1887-1943) served as president of the Geographical Society of the USSR from 1931 to 1940. A distinguished plant breeder, geneticist, explorer for wild ancestors of cultivated plants, and geographer, he traveled widely and reported regularly to the Society on his explorations and discoveries. Together with Yu. N. Shokal'skiy, then the honorary president, he brought many new initiatives to the activities of the Society. They arranged for the transfer of the Society from the People's Comissariat of Education of the RSFSR to the Academy of Sciences of the USSR. The First All-Union Congress of Geographers of the USSR was held in 1933, participation in international congresses was arranged, international co-operation was sponsored, membership was increased sharply, sections and commissions were established or revived, a series of public lectures was organized, a lecture hall was opened, and the scientific archives were enriched. Vavilov was especially interested in the work of the Section on History of Geographical Knowledge and participated actively in special issues of Izvestiya of the Society and in commemorative meetings at the Society devoted to individual geographers who had made particularly significant contributions to geographical knowledge (translated by Chauncy D. Harris, University of Chicago, Chicago, Illinois 60637-1583). 相似文献
12.
<正>目次一地面封土与陵园建筑二墓道及过洞天井三墓室结构四随葬品组合五墓主身份六结语北魏由拓跋鲜卑建立,墓葬体现了多民族文化融合的特征。随着考古材料不断积累,纪年墓的资料日渐丰富,为探讨北魏中后期墓葬等级、丧葬制度提供了直接证据。目前发现的北魏墓葬近两千座,经考古发掘的不到一半,其中纪年墓信息较完整者有七十四座(附表)。纪年墓主要分布于平城和洛阳地区,墓葬年代则集中于北魏中晚期,其中最早的为太延元年(435年)破多罗太夫人墓,最晚是永熙三年(534年)李仲胤夫妇墓。本文主要通过墓葬地面封土、墓道规模、墓室结构、随葬品组合、墓主身份等反映的文化因素讨论北魏中后期墓葬的等级规制, 相似文献
13.
14.
本文从三个方面论述了东亚经济发展模式。首先,从历史的角度分析了东亚经济发展模式的产生、特点及其局限性。然后,进一步指出在经济全球化和信息化加速发展新的历史条件下,东亚发展模式已不能适应时代发展的要求,东亚发展模式与这次东亚经济危机存在着内在的必然的联系。最后,对东亚经济发展模式的发展与变革提出了自己的观点。 相似文献
15.
16.
从地理学视角看城市历史文化景观集体记忆的研究 总被引:5,自引:2,他引:3
通过对国内外文献的分析,总结了景观、记忆与地理学的研究进展,指出景观、记忆与地方认同联系密切,而且景观与记忆的研究大多与历史文化景观相关。由于集体记忆所体现出的社会性,通过物质的和象征性的城市历史文化景观,去探究其集体记忆的认知空间和情感空间更具有现实意义。文章探讨了GIS和认知地图方法在城市集体记忆研究中的应用,并对佛山城市历史文化景观的集体记忆进行了实证研究。认为在全球化、城市化趋势下,从地理学视角,透过对历史文化景观集体记忆的分析,将有助于城市历史文化遗产持续性地保护和塑造城市地方感。 相似文献
17.
18.
19.
20.
地理学和地理教育需要顺应国家经济发展的形式,在理论与实践层面不断创新,尤其是在应用层面将人文与自然要素结合起来,建立一个符合市场运作需求的综合理论体系。地理策划是策划人通过创新性思维和理念,发现、发掘、提升和实现地理系统要素价值的过程,是地理研究成果转化成价值的关键环节。它不仅包括区域性课题,还包括广泛的地理要素和地理事件的价值发现与创造过程。通过对地理策划关键问题的梳理,构建了地理策划的基本理论框架,以使地理学更直接地面向市场。 相似文献