全文获取类型
收费全文 | 154篇 |
免费 | 1篇 |
专业分类
安全科学 | 2篇 |
废物处理 | 2篇 |
环保管理 | 15篇 |
综合类 | 2篇 |
基础理论 | 119篇 |
污染及防治 | 7篇 |
评价与监测 | 6篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 1篇 |
2021年 | 2篇 |
2015年 | 1篇 |
2014年 | 16篇 |
2013年 | 15篇 |
2012年 | 7篇 |
2011年 | 16篇 |
2010年 | 13篇 |
2009年 | 11篇 |
2008年 | 7篇 |
2007年 | 9篇 |
2006年 | 6篇 |
2005年 | 15篇 |
2004年 | 5篇 |
2003年 | 5篇 |
2002年 | 6篇 |
2001年 | 3篇 |
1999年 | 1篇 |
1997年 | 3篇 |
1996年 | 1篇 |
1995年 | 2篇 |
1994年 | 1篇 |
1991年 | 5篇 |
1987年 | 1篇 |
1986年 | 1篇 |
1984年 | 1篇 |
1983年 | 1篇 |
排序方式: 共有155条查询结果,搜索用时 213 毫秒
151.
152.
153.
Residential Water Consumption,Motivation for Conserving Water and the Continuing Tragedy of the Commons 总被引:1,自引:0,他引:1
Corral-Verdugo V Frías-Armenta M Pérez-Urias F Orduña-Cabrera V Espinoza-Gallego N 《Environmental management》2002,30(4):527-535
This paper explores the effect of the perception of externalities (PE) on residential water consumption. Externalities occur
when individuals make decisions that harm others, without concern for the impact or feeling a need to compensate for the harm.
The aim of this study was to investigate whether PE affects people's motivation to conserve water, and, consequently, the
practice of residential water consumption. Two hundred eighty Mexican citizens responded to a questionnaire investigating
how they perceived that other individuals in their community wasted water. Respondents were also asked about their motives
to conserve water, and direct observations of individual water consumption were recorded. Results were processed within a
structural equations model, which revealed that motives to conserve water significantly inhibit water consumption. Since the
perception of externalities also inhibits conservation motives, the resulting effect of PE on water consumption is positive.
This result means that the more people perceive that others waste water, the less their conservation motives, and, therefore,
the more their own water consumption. 相似文献
154.
Influence of Fragmentation and Bottlenecks on Genetic Divergence of Wild Turkey Populations 总被引:2,自引:0,他引:2
PAUL L. LEBERG 《Conservation biology》1991,5(4):522-530
Abstract: There are few empirical studies of the effects of human-induced fragmentation and bottlenecks on the genetic structure of field populations. Assessment of these effects is necessary to evaluate the relevance of predictions obtained from simulation and theoretical models to the management of wild populations. The genetic structure of populations of the Wild Turkey (Meleagris gallopavo), which have been heavily influenced by human activities, was examined using allozyme electrophoresis Allele frequencies at four polymorphic loci were estimated for 27 localities using 461 turkeys The estimated proportion of genetic variation resulting from differences among populations (Fst = 0.102) was one of the highest reported for any avian species and was also much higher than that observed between turkey populations that had not passed through known bottlenecks Almost all of the variation (89%) among populations was accounted for by differences between groups of populations with different histories of manipulation Fragmented distributions and population bottlenecks due to human activities appear to have increased genetic differentiation among populations of wild turkeys. This observation agrees with theoretical predictions concerning the effects of isolation and bottlenecks on the genetic structure of field populations. 相似文献
155.
de Abreu Íthalo Barbosa Silva de Sousa Maria Helena da Silva Andressa Pereira de Araújo Padilha Carlos Eduardo Sales Aldo Torres da Silva Antonio Samuel Alves Dutra Emmanuel Damilano Menezes Rômulo Simões Cezar 《Journal of Material Cycles and Waste Management》2023,25(3):1309-1324
Journal of Material Cycles and Waste Management - The use of food waste (FW) for the production of biofuels and value-added compounds is growing worldwide. However, the significant chemical... 相似文献