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甘肃省黄河沿岸地区水资源承载能力分析
作者: 刘建兰   来源: 兰州大学 年份: 2010 文献类型 : 学位论文 关键词: 甘肃省   沿黄地区   水资源   承载能力   系统动力学  
描述: th, the demand of water resource is continuously increasing. That is to say water shortage has become a global problem. Water resources carrying capacity is the basis and prerequisite of regional socio-economic development, which is significant to realize the coordinated development of regional "water resources- ecological environment-socio-economy" composite system. So it has become the focus and hot topic in water science field nowdays.
全文:资源是人类生存和社会发展最重要的基础资源,随着世界各国经济和人口的增长,水资源的需求量不断增加,水资源短缺已经成为全球性问题。水资源承载能力对于实现区域“水资源一生态环境一社会经济”复合系统
甘肃省黄河沿岸地区水资源承载能力分析
作者: 刘建兰   来源: 兰州大学 年份: 2010 文献类型 : 学位论文 关键词: 甘肃省   沿黄地区   水资源   承载能力   系统动力学  
描述: th, the demand of water resource is continuously increasing. That is to say water shortage has become a global problem. Water resources carrying capacity is the basis and prerequisite of regional socio-economic development, which is significant to realize the coordinated development of regional "water resources- ecological environment-socio-economy" composite system. So it has become the focus and hot topic in water science field nowdays.
全文:资源是人类生存和社会发展最重要的基础资源,随着世界各国经济和人口的增长,水资源的需求量不断增加,水资源短缺已经成为全球性问题。水资源承载能力对于实现区域“水资源一生态环境一社会经济”复合系统
山丹马场休闲农业资源与休闲游憩活动规划研究
作者: 刘松杨   来源: 河北农业大学 年份: 2010 文献类型 : 学位论文 关键词: 休闲农业资源   活动规划   山丹马场   休闲游憩活动  
描述: Leisure agriculture in China is now developing gradually and the benefit has increased every year.
全文:活动、硬件设施、旅游行程进行休闲游憩活动的规划。主要结论如下: (1)休闲农业资源是所有能够投入休闲活动的农业生产、农民生活以及农业生态等要素的总和,它具有生产性和季节性、地域性、知识性、生态性、审美性
石羊河流域作物气候生产潜力及灌溉对策的研究
作者: 孙世坤   来源: 西北农林科技大学 年份: 2010 文献类型 : 学位论文 关键词: GIS   气候生产潜力   灌溉需水量   对策   CROPWAT  
描述: be given when fully and rational use of local climatic resources such as solar radiation, heat and water, while other conditions (such as soil fertility, carbon dioxide concentration, cultivation level etc.)
全文:提高。 (5)针对石羊河流域光合、光温和气候生产潜力的分析,认为可以从以下几方面提高流域气候资源利用率,进而提高现实产量。1)加强农田水利建设,保障作物生育期灌溉用水;2)选用和培育适宜的作物品种;3)提高作物降水生产潜力;4)充分利用土地自然资源,提高复种指数;5)发展设施农业。
农村公共服务的社区化问题研究
作者: 贾先文   来源: 湖南农业大学 年份: 2010 文献类型 : 学位论文 关键词: 供给机制   农村公共服务   居民参与   社区化  
描述: "three rural issues".
全文:的成效,但没有达到预期的效果。其关键原因在于公共服务供给体制和机制存在问题,作为公共服务消费者的农村居民参与不足,没有发挥农村社区应有的作用。农村公共服务社区化有利于提高公共服务资源的配置效率,有利于满足
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
西部干旱地区农户旱地种植行为实证研究
作者: 叶晶晶   来源: 南京农业大学 年份: 2010 文献类型 : 学位论文 关键词: 农户   旱地   水资源   决策   干旱风险  
描述: ncentrated v}}ith 85% of the total dry lands. and it is important for the national economy and the countr<0's strategic agricultural growth. Northwest arid areas basically depend on natural precipitation. water shortage has seriously affected the farmers practices. The decision of farmers to plant dry land is a two-stage decision-making behavior: They first have to decide whether to plant dry land, and then decide what kind of crops planted in the dry lands. It is essential to find effective ways to raise the enthusiasm of farmers planting and reasonable arrangements for dry land crop structure. However. ver}} few people study dry land farming practice from the perspective of water shortages.
全文:作物结构是十分必要的,但是很少有人从水资源短缺的角度对农户的旱地种植行为进行研究。 基于以上背景,本文选择了水资源短缺比较明显的甘肃省张掖市民乐县为研究区域。文章通过干旱条件下分析影响农户种植决策
甘肃省小杂粮产业竞争力研究
作者: 牛婷婷   来源: 甘肃农业大学 年份: 2010 文献类型 : 学位论文 关键词: 甘肃   产业链   小杂粮   产业竞争力  
描述: ting area for grain crops togther in the provinces.
全文:经营主体以及政府与相关政策等五方面对甘肃小杂粮产业竞争力的影响因素进行了分析,得出甘肃省自然资源条件优越,农村劳动力资源丰富,科研基础较好,市场需求增加,为甘肃小杂粮产业发展提供了较好的资源优势和需求
气候变暖趋势下甘肃省粮食供需问题研究
作者: 王海强   来源: 甘肃农业大学 年份: 2010 文献类型 : 学位论文 关键词: 甘肃省   粮食供需   气候变暖  
描述: Climate change have been one of the most important factors that influence the global development.
全文:气候变化已经成为影响全球发展的重要因素之一。世界政府间气候变化委员会发布的《气候变化综合报告2007》中指出气候变化将对经济、社会产生重大影响,中纬度地区的农业生产将面临较为严峻的水资源匮乏等困难
酒泉市特色农业产业发展研究
作者: 伍小玲   来源: 兰州大学 年份: 2010 文献类型 : 学位论文 关键词: 酒泉市   特色农业产业   制约因素  
描述: stics of the basic conditions for the development of agricultural industry in Jiuquan City and, the situation of and constraints in the development of featured agricultural industry, aiming at seeking an approach to futher develop the featured agricultural industry in the city of Jiuquan.
全文:丝绸之路的重要枢纽,具有独特的自然资源和悠久的历史文化,加之便利的交通,完善的基础设施和经济的快速发展,使酒泉市具备发展特色农业产业的基础条件。 第二,酒泉市坚持立足资源优势,制定农业产业发展规划,积极
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