对观光农业空间类型分布的探索

作者： 卢冲   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 聚类分析法   农业观光   西安   乡镇   SAS软件  

描述： y to become "the green economy" under the big background onekind of natural selection.

全文：而导致惨淡经营。 本论文就以西安地区的20乡镇为例,运用数学统计方法-聚类分析法对20个乡镇进行类型的区分,最终将20个样本(乡镇)聚类为六种类型:山区型、沿河型、河谷型、沿山型、平原型、丘陵型。结合

关中地区史前动物遗存研究

作者： 赵晨   来源： 吉林大学 年份： 2009 文献类型 ： 学位论文 关键词： 动物遗存   关中地区   骨器   环境   旧石器时代   家畜   新石器时代  

描述： the faunal remains in this region, it

全文：本文通过对关中地区史前动物遗存资料的收集、整理和分析,详细阐述了关中地区史前各个时期的的自然环境面貌,进一步揭示自然环境变化与人类活动的关系以及与人类文化进程的的密切联系。通过对旧石器时代不同

明清时期三陇地区的农田水利研究

作者： 康小兰   来源： 西北师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 三陇地区   农田水利   明清时期  

描述： in agriculture. In recent years, the Western Development Drive (WDD) has been carried out, however, the problem of lack of water has still not been solved fundamentally.

全文：我国的西北地区自古就是一个干旱、半干旱区,缺水是这一地区农业面临的最大困难。近年来,西部大开发已经轰轰烈烈地开展了,然而缺水的问题仍然没有从根本上得到解决。中国历史源远流长,在古代,西北地区的先民们

明清时期西北地区农业灾害研究

作者： 彭莉   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 明清时期西北地区   自然灾害   农业   农村   农民  

描述： cultivation development process to be especialty difficult, frequent occurrence of multiple disasters, the development of the Northwest Territories are important constraints, the reduction of agricultural land, agriculture, the substantial loss of population, agriculture, infrastructure damage, agricultural ecological environment and the poor. Based on this, the north-west areas of the process of agricultural drought introduced varieties, select a variety of agricultural disaster mitigation technology. In this paper, the Northwest Territories to explore the Ming and Qing Dynasties of natural disasters on agricultural production hazards, damage the rural economy and livelihood of the affected farmers. By the six parts.

全文：明清时期西北地区农业灾害严重,频繁发生的多种灾害是西北地区发展重要的制约因素,农业耕地的减少、农业人口的大量流失、农业设施的破坏、农业生态环境的恶化等。基于此,西北地区开展农耕的过程中引进了抗旱品种

河套地区新石器时代环境考古学初步研究

作者： 何抚顺   来源： 西北大学 年份： 2009 文献类型 ： 学位论文 关键词： 环境考古研究   河套地区   新石器时代  

描述： o study the spatial and temporal scales between Longshan era and Yangshao era's archeology .Sought in the region of the

全文：本文以包括陕西北部及内蒙古中南部的河套地区新石器时代(约距今7000～4000年)为研究的时空范围,力图通过对这一区域仰韶时代和龙山时代考古学文化演变过程与自然环境变化的关系研究,来探讨人类文化与

陕北地区特色农业发展战略研究

作者： 卢小雅   来源： 西北农林科技大学 年份： 2009 文献类型 ： 学位论文 关键词： 战略研究   特色农业发展   陕北地区   农业可持续发展  

描述： as well as improving market competitive power to highlight the regional characteristic and allocate production factors according to the entire resources superiority and characteristic as well as market demand by advanced technology so as to establish the non-balanced and distinctive agricultural production system characterized by moderate scale, favorable benefit and strong market competitive power.

全文：特定生产对象或生产目的为目标,形成规模适度、特色突出、效益良好和产品具有较强市场竞争力的非均衡农业生产体系。特色农业的发展是适应当前社会消费需求、世界经济一体化和全球农业市场细分需要的必然结果。陕北地区

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

清末民初关中地区的农田水利纠纷及其解决途径

作者： 赵淑清   来源： 陕西师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 清末民初   关中地区   解决途径   农田水利纠纷   特征  

描述： society. The central Shaanxi Province lies in the northwest inner-land, lacking in water resources. Although there have been major farmland irrigation projects and perfect management system in the Qin and Han Dynasty, the times of the Sui and Tang Dynasty, the situation of water depletion could not be changed radically.

全文：农田水利纠纷的特征,鉴于水资源不足依然是今天关中地区农业发展的颈瓶,故本文的研究对完善非常态下的应对机制有深刻的启迪意义。 本文的创新之处有以下几点:1、在文献方法上多使用档案、统计、碑刻资料,通过典型水利

清末民初关中地区的农田水利纠纷及其解决途径

作者： 赵淑清   来源： 陕西师范大学 年份： 2009 文献类型 ： 学位论文 关键词： 清末民初   解决途径   关中地区   农田水利纠纷   特征  

描述： society. The central Shaanxi Province lies in the northwest inner-land, lacking in water resources. Although there have been major farmland irrigation projects and perfect management system in the Qin and Han Dynasty, the times of the Sui and Tang Dynasty, the situation of water depletion could not be changed radically.

全文：农田水利纠纷的特征,鉴于水资源不足依然是今天关中地区农业发展的颈瓶,故本文的研究对完善非常态下的应对机制有深刻的启迪意义。 本文的创新之处有以下几点:1、在文献方法上多使用档案、统计、碑刻资料,通过典型水利