全文获取类型
收费全文 | 249篇 |
免费 | 10篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 15篇 |
废物处理 | 11篇 |
环保管理 | 51篇 |
综合类 | 42篇 |
基础理论 | 77篇 |
环境理论 | 1篇 |
污染及防治 | 36篇 |
评价与监测 | 12篇 |
社会与环境 | 14篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 6篇 |
2022年 | 5篇 |
2021年 | 19篇 |
2020年 | 11篇 |
2019年 | 17篇 |
2018年 | 12篇 |
2017年 | 15篇 |
2016年 | 17篇 |
2015年 | 12篇 |
2014年 | 13篇 |
2013年 | 8篇 |
2012年 | 16篇 |
2011年 | 25篇 |
2010年 | 13篇 |
2009年 | 13篇 |
2008年 | 11篇 |
2007年 | 6篇 |
2006年 | 13篇 |
2005年 | 6篇 |
2004年 | 3篇 |
2003年 | 2篇 |
2002年 | 3篇 |
2001年 | 4篇 |
1999年 | 2篇 |
1998年 | 2篇 |
1996年 | 1篇 |
1994年 | 1篇 |
1993年 | 1篇 |
1991年 | 1篇 |
1988年 | 1篇 |
1985年 | 1篇 |
1980年 | 1篇 |
排序方式: 共有261条查询结果,搜索用时 15 毫秒
171.
Oswald Marinoni Sonja Heyenga Amanda Brigden Ainsley Archer Andrew Higgins 《Environmental Modeling and Assessment》2012,17(3):315-324
Growing urbanisation causes pressures on many environmental assets such as groundwater systems, waterways, atmosphere, ecosystems
and others. To manage and mitigate the negative effects of these pressures, environmental programs are typically launched,
which comprise of eligible projects in different affected locations. The implementation of individual projects has a cost.
However, due to budget constraints, most frequently not all suggested projects can be implemented which makes necessary to
choose a subset. In this paper, we use a cost utility approach and a subsequent combinatorial optimisation based on metaheuristics
to determine a project portfolio which returns a maximum aggregated utility while keeping the budget constraint. To ensure
that the mutual exclusiveness of projects at one particular site is guaranteed, we further developed the employed metaheuristics.
We apply this approach within a waterway health program in a river catchment in Brisbane, Australia, and compare its results
to a commonly used selection process that does not involve combinatorial optimisation. We find that the use of combinatorial
optimisation leads to a considerable improvement of the selection process and can help to more effectively allocate environmental
expenditure. 相似文献
172.
173.
Motivating energy conservation in the workplace: An evaluation of the use of group-level feedback and peer education 总被引:1,自引:0,他引:1
Research suggests that curbing consumer demand for energy through behavioral interventions is an essential component of efforts to reduce greenhouse gas emissions, particularly in the short-term. Behavior within organizational settings poses a particular challenge to those wishing to promote energy conservation because employees typically have no direct financial incentive to reduce energy use and rarely have access to information regarding their level of consumption. Two relatively simple and easy-to-implement interventions were evaluated in a workplace setting during the fall of 2008. The first involved group-level feedback presented monthly to employees via e-mail. The second used peer educators to disseminate information and to encourage colleagues to reduce energy use. Both interventions were compared to an information-only control designed to educate employees about how and why to conserve energy. Results indicated that feedback and peer education resulted in a 7% and 4% reduction in energy use, respectively. Buildings that received the control increased energy use by 4%. The effect of peer education was limited by implementation failures in two buildings. The utility of these interventions will be discussed in terms of their overall potential for reducing energy use, as well as the feasibility of their being implemented in future organizational settings. 相似文献
174.
Negative attitudes of resident communities towards conservation are associated with resource decline in developing countries. In Botswana, Community-Based Natural Resource Management (CBNRM) was adopted to address this challenge. CBNRM links rural development and conservation. However, the impact of CBNRM on changes of resident attitudes towards conservation and tourism is not adequately researched. This paper, therefore, assesses the impacts of CBNRM on resident attitudes towards tourism development and conservation in the Okavango Delta, Botswana. The study purposively sampled villages of Khwai, Mababe and Sankoyo. Household data using variables like: economic benefits from CBNRM; level of satisfaction with CBNRM; co-management of natural resources between resident communities and government agencies; and collective action was collected. This data was supplemented by secondary and ethnographic data. Using qualitative and quantitative analysis, results indicate changes in resident attitudes from being negative to positive towards tourism and conservation. These changes are triggered by economic benefits residents derived from CBNRM, co-management in resource management; and, collective action of communities in CBNRM development. Positive attitudes towards conservation and tourism are the first building blocks towards achieving conservation in nature-based tourism destinations. As a result, decision-makers should give priority to CBNRM and use it as a tool to achieve conservation and improved livelihoods in nature-based tourism destinations of developing countries. 相似文献
175.
Santos de Lima Amanda Fernandes Pupo Nogueira Raquel 《Environmental science and pollution research international》2021,28(19):23767-23777
Environmental Science and Pollution Research - The effect of incorporation of different amounts of cerium on iron oxides and different heat treatment temperatures was evaluated for the degradation... 相似文献
176.
Jennifer Griffiths Megan N. Dethier Amanda Newsom James E. Byers John J. Meyer Fernanda Oyarzun Hunter Lenihan 《Marine Biology》2006,149(6):1489-1497
Marine reserves can help in maintaining biodiversity and potentially be useful as a fishery management tool by removing human-mediated impacts. Intertidal, soft-sediment habitats can often support robust recreational and commercial shellfish harvests, especially for clams; however, there is limited research on the effects of reserves in these habitats. In San Juan County, Washington, several reserves prohibit recreational clam digging. We examined the effects of these reserves on infaunal community composition through comparison with non-reserve beaches during a 6-week period. Clam abundance, overall species richness and total polychaete family richness were greater on reserve beaches compared to non-reserve beaches. Additionally, an experiment within a reserve demonstrated negative impacts of digging on non-target infauna. These effects probably resulted from local disruption and disturbance of the sediment habitat and not from increased post-digging predation, which was controlled. Intertidal reserves could play an important role in sustaining local and potentially regional biodiversity. 相似文献
177.
178.
179.