唐代西北地区政治地理格局变动研究

作者： 魏昀   来源： 陕西师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 唐朝   疆域   羁縻府州   屯田   交通  

描述： th about three of culture and materials the country's territory changed a lot. The country's territory was in an extending period before and the An-Shi Armed Rebellion, and once extended to the Central Asia area.At the same time, the Tang government founded the Ji-Mi-Fu-Zhou system in the Western Regions. The situation changed rapidly when the An-Shi Armed Rebellion broke out. Then the central government mobilized the troops in the Western Regions to participating in putting down the Rebellion, so the border defence was weakened. Tu-bo took the chance to occupy a large amount of territory. Almost Long You Area was oppupied by Tu-bo later in Tang Dynasty. The thesis is divided into five chapters: political geography circumstance in northwest area in early Tang Dynasty，including the situation of physical geography and the nation regime; the political geography situation in the extending period of territory from Tai Zong to Gao Zong;the political geography situation in the stable period of territory from Wu-zhou era to An-Shi Armed Rebellion;the political geography situation in the shrinking period of territory after An-Shi Armed Rebellion;relationship between the change of political geography situation and economy and traffic. Conclusion: From A.D. 7th to 9th century，Asia-Erope Continent was a place where Tang, Da-shi and Tu-bo contended for political space. The country's power of politics, economy and military strengthened before An-Shi Armed Rebellion, and part of the Central Asia area belonged to Tang government. The territory reached to an unparalleled scale at that time, which can be divided into three parts: the capital area where Chang-an and Luoyang were located in was the empire's center of politics, culture and military; the Zheng-zhou that around the captals was where the finance of central government stemmed from; the Ji-mi-fu-zhou system Tang government founded in the frontier area was the military buffer zone with nation regimes in vicnity. At the same time, Tu-bo appeared in the stage of history in A.D 7th century. After the King Song-zan-gan-bu unified the Tibet plateau, Tu-bo's power strengthed rapidly and harassed Tang's frontiers inceasingly. The Tang government put the defense police actively into effect so as to resist Tu-bo's aggression and defend country's benefit in Long-you area. When An-Shi Armed Rebellion broke out, Tu-bo took the chance to occupy vast territory of Tang Dynasty, like Minzhou, Lanzhou, Kuozhou, Guazhou, and so on. Eventually, almost all Long-you areas belonging to Tang Dynasty was occupid by Tu-bo. In the field of geopolitics, the national power strengthened in the earlier stage of Tang Dynasty and stronger than Tu-bo. Tu-bo didn't have the strength contending with Tang Dynasty, even harassed the frontier once a while. Until the An-Shi Armed Rebellion, the Tang government had no more advantage and the national power was weakened.

全文：曾一度到达今天的中亚地区,并在那里建立了羁縻府州体系,国家疆域的范围达到了空前规模。随着安史之乱的爆发,形势急转,中央政府抽调边兵前往内地参与平叛。吐蕃势力趁唐朝西北边备空虚之际,不断蚕食唐土。唐军虽然

隋唐时期青海草原战争与生态环境研究

作者： 来霞霞   来源： 陕西师范大学 年份： 2010 文献类型 ： 学位论文 关键词： 生态环境   吐谷浑   吐蕃   青海草原  

描述： t Territories distributed a few mature Minority forces,for example: TuYuhun, Tibet, Party items.

全文：。 中国古代社会发展带有一定的周期性,对这种周期性影响很大的因素便是生态环境被破坏-恢复这个周期。以战争为直接动力,完成“生态移民”后,人们在一个新的社会组织体系和自然环境中获得生存和发展。人口迅速膨胀

隋唐时期青海草原战争与生态环境研究

作者： 来霞霞   来源： 陕西师范大学 年份： 2010 文献类型 ： 学位论文 关键词： 生态环境   吐谷浑   吐蕃   青海草原  

描述： t Territories distributed a few mature Minority forces,for example: TuYuhun, Tibet, Party items.

全文：。 中国古代社会发展带有一定的周期性,对这种周期性影响很大的因素便是生态环境被破坏-恢复这个周期。以战争为直接动力,完成“生态移民”后,人们在一个新的社会组织体系和自然环境中获得生存和发展。人口迅速膨胀

榆中生态示范区建设研究

作者： 张俊红   来源： 兰州大学 年份： 2009 文献类型 ： 学位论文 关键词： 生态示范区   可持续发展   评价指标体系   生态综合指数   生态文化   生态经济   生态县  

描述： Ecological Demonstration Area is a region with benign recycle. It coordination opment of the economy and environment.

全文：和生态省的创建活动,将生态示范区建设扩展到了更大的范围和区域。生态示范区的建设是符合我国国情国力的切实可行的发展模式. 1995～2007年,全国已经开展了八批生态示范区建设试点,这些试点地区均编制了生态

兰州市古树名木调查及保护研究

作者： 刘秀琴   来源： 兰州大学 年份： 2009 文献类型 ： 学位论文 关键词： 古树养护与复壮技术   古树后续资源   保护性开发建议   兰州市   古树名木  

描述： e are scarce are one of the and nonrenewable of city devel engrave epoch stamp, They are often named "Green Antique" and "Live opment, Cultural relic" by having high ecological, social, economic value, scientific research, high ornamental and tourist, and historical memorial meaning.

全文：管理状况的调查与分析,提出了存在的主要问题和今后发展的建议:(1)加强领导,落实责任,增加投入;(2)加强古树名木养护复壮技术研究并加以实施;(3)尽快划定古树群重点保护区并切实加以保护;(4)充分发挥古树名木重要价值并加强后续资源保育。

基于文化视角的农民专业合作社品牌培育

作者： 刘文生   来源： 福建农林大学 年份： 2009 文献类型 ： 学位论文 关键词： 品牌   农民专业合作社   文化  

描述： elopment of farmer specialized cooperatives and make them modern agricultural management organizations which lead farmers to take part in the competition of domestic and foreign markets

全文：党的十七届三中全会明确指出,要扶持农民专业合作社加快发展,使之成为引领农民参与国内外市场竞争的现代农业经营组织。2009年中央1号文件也对农民专业合作社给予了高度关注,提出了一系列旨在加快发展农民

文明传播视野下的汉代河西开发

作者： 刘俊玲   来源： 青海师范大学 年份： 2010 文献类型 ： 学位论文 关键词： 河西   汉代   开发   文明  

描述： ral environments make the cultural dissemination possible. In archeological materials we can see plenty of Neolithic culture and Bronze culture,which may be nomads. Ywati, Wusun, Hun were lived here.Befor Han Dynastie ,the area was regarded as wild and woolly place.the Hun sprang up during Qin and Han Dynastie, Gansu Corridor became more and more imporant in military and politics affairs. After the establish of Western Han Dynasty ,the imperium rehabilitated for tens of years . Emperor han wudi change the plant to the Hun. I n the second year of yuanshou of Emperor han wudi(121BC),Huoqubing go on an expedition to Gansu Corridor,and wan,because the Hunye king killed the Xiutu king . The Hunye king surrenderred and leaded his man about 40000 .This is significant to the history of culture diaaemination. From then on,Han culture hold the dominant position in the war.The pattern of dissemination were war,politics and valueas.And the policy which Han made decision of the dissemination and the speed. After long time Interaction,the two change the hisroy of this area.Although some rejection and degradation happened,the new trail was certainty. Agricultural civilization took new tools to the area,and finally the Silk Road was freely.It made a contribution to culture dissemination.However,the aggressive e x p a n s i o n m a d e t h e immigrate and armies too huge,and led the crisis of ecologyand resource. Qiang civilians uprising during the Eastern Han Dynastie made the land desertificated. The process was not at one stroke,but a long time. Rely on force was to set up a unified ,multinational country.

全文：,建立了新的生产技术体系,同时也保证了丝绸之路的畅通,为中外文明传播作出了积极的贡献;但是,农业文明的大肆扩张,也使得河西出现了前所未有的生态和资源危机。随着河西屯田的进行,移民和戍卒大量涌入这个资源

魏晋南北朝北方地区生态环境研究

作者： 武冠芳   来源： 山西大学 年份： 2009 文献类型 ： 学位论文 关键词： 生态环境   魏晋南北朝   北方  

描述： ecological environment sometimes changed the process of the history of society" .

全文：生活方式来说,是由游牧社会渐转为农耕社会的过程。北方少数民族移民南下的根本目的是希冀通过新的经济活动空间的开拓,调节由于气候变迁引起的自然条件的恶化,造成人口相对过剩与生产资料来源相对缩减的矛盾,缓解游牧民族为此而面临的生存危机。

杨屾农桑试验研究

作者： 刘伟   来源： 西北农林科技大学 年份： 2012 文献类型 ： 学位论文 关键词： 农学   杨屾   蚕桑   理学  

描述： 杨屾生于康乾治世、列于关学谱系，一生从事农桑试验与推广，且《清史稿》无传，《续修陕西通志》和民国重修《兴平县志》等也只着重记述他在家乡推广桑蚕及其学术上的成就，较少涉及其他方面。本文以事写人，以杨屾农桑试验为节点，力图廓清一代关中学人的思想、实践及其与社会的互动过程，勾勒清代前期一人、一地、一时之历

全文：农业提供了充足的人力资源，另一方面受到关中地权分散的影响，个体农户的生存压力有所增大，加之一定的气象灾害影响，使得个体定居农业生产要么选择从商或者移民转移富余劳动力，要么想方设法“与地争利”，加速推进

周秦汉晋时期农业灾害和农业减灾方略研究

作者： 卜风贤   来源： 西北农林科技大学 年份： 2001 文献类型 ： 学位论文 关键词： 周秦汉晋   减灾方略   农业灾害   历史研究  

描述： 农业灾害的历史与农业生产的发展相始终。在古代社会，中国农业灾害频繁发生，对农业生产和国民经济造成严重危害和破坏。在现代灾害学昌兴的新的历史形势下，农业灾害史的研究需要汲取灾害学的理论成果，重新审视古代灾害的发生发展及农业减灾的措施和成效。为此，本文研究了周秦汉晋时期的农业灾害和农业减灾方略。全文由三

全文：。 针对历史农业灾害史料处理中存在的法则零乱问题，本文提出了灾害史料灾度等级量化办法，根据现代灾害学中的灾度理论，确立了1度灾害的基准线，在此基础上，依据历史灾害资料的有关信息，以灾区大小、灾情状况和灾期