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植物河道水流特性和稳定河相关系研究
作者: 王燕   来源: 中国海洋大学 年份: 2009 文献类型 : 学位论文 关键词: 仙农熵   水流特性   生态河流   根系加固   河相关系  
描述: made for economic prosperity. At the same time, some man-made natural disasters have been paid more and more attentions , so the research on hydraulic characteristics of the river in recent years has been put on the agenda. Considering the ecological environment, flood control, pollution prevention and control method, and in view of the perspective of the urban landscape as well as the national strategic plan for sustainable development, the research the hydraulic characteristics of river and making river reasonably repair and ecological reconstruction will become a general trend, because that is a kind of remediation measure for human to be done unreasonable exploitation, and it also will be the strong protection of river resources and sustainable model for better using river resources in the future.
全文:植被前后的水流特性变化情况与河宽动力调整过程,并进行了相应的理论研究;引入植物的种植密度,考察在不同种植密度的情况下对河宽调整的影响关系,得出相关的糙率拟合公式;在能量均衡关系的基础上,利用仙农熵的理论
我国现代农业发展中金融支持问题研究
作者: 张智河   来源: 中国海洋大学 年份: 2009 文献类型 : 学位论文 关键词: 农村金融体系   农村金融需求   现代农业   现代金融  
描述: ment. To crack the
全文:肯定金融体系对于改善农村经济状况的正相关关系。问题在于,有效地支持现代农业发展问题究竟需要何种模式的金融体系,如何解决好现代农业发展中的金融支持问题,是依靠实体经济自发的培育和内生,还是依靠外部力量
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