全文获取类型
收费全文 | 50篇 |
免费 | 1篇 |
专业分类
安全科学 | 7篇 |
环保管理 | 5篇 |
综合类 | 25篇 |
基础理论 | 4篇 |
污染及防治 | 2篇 |
评价与监测 | 5篇 |
社会与环境 | 3篇 |
出版年
2018年 | 1篇 |
2017年 | 5篇 |
2016年 | 2篇 |
2014年 | 2篇 |
2013年 | 2篇 |
2012年 | 1篇 |
2011年 | 2篇 |
2009年 | 2篇 |
2008年 | 2篇 |
2007年 | 4篇 |
2006年 | 2篇 |
2004年 | 1篇 |
2003年 | 1篇 |
2002年 | 1篇 |
2001年 | 1篇 |
2000年 | 2篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1995年 | 4篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1977年 | 1篇 |
排序方式: 共有51条查询结果,搜索用时 14 毫秒
21.
22.
In a recent paper, it was suggested that one of the reasons behind the decline in public regard toward British Columbia's
environmental movement was an increasingly negative portrayal of them by the print media. To investigate this suggestion,
we undertook a content analysis of print media reporting of forestry and environmental activities in the province's most widely
read newspaper, the Vancouver Sun, during 1993 and 1997. We hypothesized that if the print media did contribute to the decline in public regard toward the
environmental movement, we would find increasingly negative coverage of the environmental movement over the periods studied.
We also hypothesized that this would be accompanied by a decrease in the frequency of articles dealing with issues consistent
with the agenda of the environmental movement. We were not able to provide support for our initial hypothesis, nor did we
observe a decrease in coverage emphasizing the environmental issues. We did, however, observe an increase in coverage of articles
emphasizing typically proindustry issues with many more articles written with a proforestry slant in 1997 than articles written
in 1993. This suggests that there had been an agenda shift from environmentally oriented concerns in British Columbia to those
associated with the forest industry. As an explanation for the agenda shift, we point to changes in the management and reporting
philosophy at the Vancouver Sun, the emergence of an organized, proindustry counterframing strategy by the BC Forest Alliance, and the implementation of
several government policies aimed at regulating the activities of the forest industry. 相似文献
23.
24.
25.
能源规划环境影响评价内容框架实践与探讨 总被引:3,自引:0,他引:3
规划环评是环评领域一个新方向。虽然环评法已经实施,但目前在实际执行过程中,对编制的规划如何按照规划环评导则组织规划环评以及对规划环评思路和内容框架尚没有具体的研究。本文从实践出发并结合环境与发展综合决策的角度,以浙江省2010年电力发展规划及2020年展望的能源类规划环评为案例,对能源类规划环评的内容框架作初步研究。 相似文献
26.
应用ICP-AES对南京市玄武湖表层沉积物间隙水和上覆水中的金属元素进行定量测试,并对间隙水和上覆水中的金属离子浓度进行了相关性分析。结果表明,大部分间隙水中的金属离子浓度高于上覆水,且在两者中不具有相同的浓度分布趋势;相关性分析表明,除Mn外,其它元素在间隙水和上覆水中的浓度无明显相关性,但是Fe和Mn与其它金属元素之间存在明显的相关性。 相似文献
27.
针对我国环保产业发展中的不足之处,剖析了环保产业在发展方向、科技含量及发展条件等方面存在的误区,并提出了相应的对策和建议 相似文献
28.
赵承开 《湖南环境生物职业技术学院学报》1995,(1)
本文回顾了生态系统管理的进程,简述了生态系统管理的内容,提出了生态系统管理的目标,论述了森林生态系统管理的效益。森林是一种再生资源,它既具有社会环境效益,又具有经济价值;而且前者往往超过后者。 相似文献
29.
《Environmental Communication: A Journal of Nature and Culture》2013,7(2):255-276
Scholars of environmental communication acknowledge the importance of visual representations in shaping perceptions and actions in relation to environmental affairs. Unlike with other media, including newspapers, television and film, research on the visualization of nature and environmental issues in magazines is rare. This study focuses on the covers of Time magazine, one of the world's most influential news weeklies. A dataset that includes all relevant covers from 1923 to 2011 is examined using a combination of quantitative and qualitative content analysis to analyze the visual representation of nature and environmental issues. The results show that the presence of environmental issues and nature on the covers has increased over the decades. Furthermore, Time takes an advocacy position on some environmental issues, but it is a shallow one that is weakly argued through less-than-engaging imagery and fails to offer much in the way of solutions or agency to the reader. 相似文献
30.