全文获取类型
收费全文 | 495篇 |
免费 | 5篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 16篇 |
废物处理 | 33篇 |
环保管理 | 63篇 |
综合类 | 58篇 |
基础理论 | 139篇 |
污染及防治 | 142篇 |
评价与监测 | 23篇 |
社会与环境 | 22篇 |
灾害及防治 | 6篇 |
出版年
2023年 | 2篇 |
2022年 | 6篇 |
2021年 | 5篇 |
2020年 | 3篇 |
2019年 | 4篇 |
2018年 | 5篇 |
2017年 | 19篇 |
2016年 | 14篇 |
2015年 | 10篇 |
2014年 | 16篇 |
2013年 | 36篇 |
2012年 | 20篇 |
2011年 | 36篇 |
2010年 | 19篇 |
2009年 | 21篇 |
2008年 | 31篇 |
2007年 | 29篇 |
2006年 | 29篇 |
2005年 | 20篇 |
2004年 | 18篇 |
2003年 | 19篇 |
2002年 | 22篇 |
2001年 | 22篇 |
2000年 | 10篇 |
1999年 | 5篇 |
1998年 | 6篇 |
1997年 | 7篇 |
1996年 | 3篇 |
1995年 | 3篇 |
1994年 | 6篇 |
1993年 | 4篇 |
1992年 | 11篇 |
1991年 | 2篇 |
1990年 | 4篇 |
1989年 | 6篇 |
1985年 | 3篇 |
1983年 | 3篇 |
1981年 | 3篇 |
1980年 | 1篇 |
1979年 | 4篇 |
1976年 | 1篇 |
1975年 | 1篇 |
1962年 | 1篇 |
1958年 | 2篇 |
1954年 | 1篇 |
1948年 | 1篇 |
1933年 | 1篇 |
1928年 | 2篇 |
1927年 | 1篇 |
1924年 | 1篇 |
排序方式: 共有502条查询结果,搜索用时 46 毫秒
321.
322.
Marcel Hunecke Sonja Haustein Sylvie Grischkat Susanne Bhler 《Journal of environmental psychology》2007,27(4):277-292
In this study, the relevance of psychological variables as predictors of the ecological impact of mobility behavior was investigated in relation to infrastructural and sociodemographic variables. The database consisted of a survey of 1991 inhabitants of three large German cities. In standardized interviews attitudinal factors based on the theory of planned behavior, further mobility-related attitude dimensions, sociodemographic and infrastructural characteristics as well as mobility behavior were measured. Based on the behavior measurement the ecological impact of mobility behavior was individually assessed for all participants of the study. In a regression analysis with ecological impact as dependent variable, sociodemographic and psychological variables were the strongest predictors, whereas infrastructural variables were of minor relevance. This result puts findings of other environmental studies into question which indicate that psychological variables only influence intent-oriented behavior, whereas impact-oriented behavior is mainly determined by sociodemographic and household variables. The design of effective intervention programs to reduce the ecological impact of mobility behavior requires knowledge about the determinants of mobility-related ecological impact, which are primarily the use of private motorized modes and the traveled distances. Separate regression analyses for these two variables provided detailed information about starting points to reduce the ecological impact of mobility behavior. 相似文献
323.
Bengt Lundén 《Ambio-人类环境杂志》2003,32(5):374-377
在瑞典斯卡格拉克海峡沿岸,大叶藻(Zostera
marina)是一种生长在浅水软海底上的优势显花植物.大叶藻场是许多甲壳动物和鱼类,不管是洄游种或是稳定种的重要群落生境.在20世纪80年代期间,作为海岸带管理的基础,对瑞典西海岸有大叶藻生长的沿岸浅水区的资源进行了调查.在这次研究中我们再次考察了斯卡格拉克海峡200km沿岸的5个沿海地区中的2000hm2大叶藻场.资源调查的方法(水下测量镜)与80年代的一样,但通过使用全球定位系统(GPS)增加了绘图的精确度.这次研究的结果表明,在10~15年的时间里,大叶藻的区域延伸面积减少了58%,且地区变化很大.大叶藻的减少主要限于大叶藻场的浅水部分.本文探讨了原因和生态后果. 相似文献
324.
325.
Individuals’ food choices are intimately connected to their self-images and world views. Some dietary choices adopted by consumers
pose restrictions on their use of genetically modified food (GMF). It is quite generally agreed that some kind of labeling
is necessary for respecting consumers’ autonomy of choice regarding GMF. In this paper, we ask whether the current practice of mandatory
labeling of GMF products in the European Union is a sufficient administrative procedure for respecting consumers’ autonomy. Three issues concerning this question are discussed. First,
we argue that labeling needs to be accompanied by relevant and understandable information on genetic modification, genetically
modified food, and the European practice of GMF labeling. Second, we claim that this type of informing makes it less likely
that consumers start to avoid GMF products just because labels make them suspicious of the products. It is further noted that
even though some consumers may react to labels this way, labels do not restrict their autonomy of choice. Third, a need for
more precise labels indicating the source of the transferred gene is considered. It is found out that such labels are not
morally necessary when also non-GMF products are available and no relevant differences (such as differences in price and healthiness)
exist between them and GMF products. However, in some other cases more precise labels may be needed for respecting consumers’
autonomy of choice. 相似文献
326.
327.
328.
329.
330.