按文献类别分组
关键词
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:河流的开发利用带来了一定的经济效益,为经济的繁荣做出了很大的贡献。但与此同时,人为造成的自然灾害不得不越来越引起人们的广泛关注,于是近年来河道的水力特性的研究已提上日程。无论是从生态、防洪、防治污染
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:认为:在目前,发展我国农村金融的主要症结包括金融资源主体缺位,非正规金融机构法律缺失,金融风险转移机制薄弱,金融服务体系滞后,土地管理存在缺陷,金融产品创新动能不足,参与资本市场的规模偏小等诸多方面
< 1
Rss订阅