大连市农村居民环境意识调查分析

研究农村居民的环境意识对于确立环境管理的理论及把握农民的环境意识状况具有重要的意义。本文采用了问卷和访谈的方法调查了大连市农村居民的环境意识,并运用spas软件对调查数据进行了统计分析,得出大连市农村居民的环境意识水平高于2006年国家环保总局调查的全国公众环境意识的平均水平,但这一水平仍有待提高。最后,文章提出增强大连市农村居民的环境意识可以通过提高人们的文化水平、增加环境保护知识的宣传等途径来实现。     

岩溶塌陷的致塌力学模型研究——以泰安市东羊娄岩溶塌陷为例

2003年5月泰安市东羊娄村发生大型岩溶塌陷地质灾害,仅塌陷坑面积就达750m2。经调查研究,真空吸蚀致塌和重力致塌是该岩溶塌陷形成的致塌力学机制,致塌力主要为覆盖层土体自身重力和地下水快速下降过程中形成的真空负压吸蚀力。根据岩溶塌陷形成机理的分析结果,分3部分建立了岩溶塌陷的致塌力学综合模型,即基于普氏天然平衡拱理论的土洞极限平衡高度公式、基于极限平衡理论的桶状塌陷坑形成判别公式和基于莫尔-库伦强度理论的漏斗状塌坑形成判别公式,经东羊娄村岩溶塌陷后验分析,计算结果与岩溶塌陷的实际情况基本吻合。     

Coincidence and Upgrade: A Typical Case Study of Rural Ecotourism Development

Abstract

At present, internal rural tourism is at the stage of upgrading and renewing, and ecotourism has been considered to be the main direction. This paper discussed the concepts and criteria of rural tourism and ecotourism, analyzed a typical case of Nongke Village of Chengdu City-being considered to be the first rural tourism site in China, went deep into the problems of the contents and criteria of the development of rural ecotourism, and tried to probe into the principles of the development of rural ecotourism both theoretically and practically so as to understand the rules of the development of rural ecotourism.