甘肃农业大学农耕特色库

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甘南藏族自治州游牧人口定居的机制、模式和效应研究: 作者： 王娟娟 来源： 兰州大学 年份： 2009 文献类型： 学位论文 关键词： 机制效应甘南模式游牧人口定居; 描述： f the Qingzang plateau.Gannan is adjacent to Qinghai province in west,to Sichuan province in south,to the southern of Gansu province in east and to the Loess plateau in north.Mountainous country and plateau are its major landforms types.It is a highest; 全文：依旧的情形下，游牧方式本身的弱质性不断暴露，其存在的外在条件正在消失，游牧向定居变迁成为历史的必然。就生态环境承载力而言，无论是从因子承载力来看，还是从地区生态环境承载力来看，较之以前，甘南的可持续发展

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：水资源概况,通过构建水资源承载能力的系统动力学模型,对水资源承载能力的动态变化进行了分析。结果表明：农田灌溉面积、灌溉定额、节水技术、非农产业规模以及生态用水几个变量对水资源承载力的影响较大,为主

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：水资源概况,通过构建水资源承载能力的系统动力学模型,对水资源承载能力的动态变化进行了分析。结果表明：农田灌溉面积、灌溉定额、节水技术、非农产业规模以及生态用水几个变量对水资源承载力的影响较大,为主

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