全文获取类型
收费全文 | 949篇 |
免费 | 23篇 |
国内免费 | 10篇 |
专业分类
安全科学 | 45篇 |
废物处理 | 6篇 |
环保管理 | 173篇 |
综合类 | 518篇 |
基础理论 | 37篇 |
环境理论 | 3篇 |
污染及防治 | 25篇 |
评价与监测 | 94篇 |
社会与环境 | 50篇 |
灾害及防治 | 31篇 |
出版年
2023年 | 1篇 |
2022年 | 5篇 |
2021年 | 10篇 |
2020年 | 13篇 |
2019年 | 9篇 |
2018年 | 6篇 |
2017年 | 11篇 |
2016年 | 30篇 |
2015年 | 20篇 |
2014年 | 29篇 |
2013年 | 54篇 |
2012年 | 38篇 |
2011年 | 54篇 |
2010年 | 37篇 |
2009年 | 56篇 |
2008年 | 44篇 |
2007年 | 55篇 |
2006年 | 54篇 |
2005年 | 43篇 |
2004年 | 32篇 |
2003年 | 44篇 |
2002年 | 39篇 |
2001年 | 41篇 |
2000年 | 52篇 |
1999年 | 37篇 |
1998年 | 30篇 |
1997年 | 32篇 |
1996年 | 21篇 |
1995年 | 13篇 |
1994年 | 17篇 |
1993年 | 16篇 |
1992年 | 11篇 |
1991年 | 7篇 |
1990年 | 3篇 |
1989年 | 2篇 |
1988年 | 7篇 |
1986年 | 1篇 |
1985年 | 6篇 |
1982年 | 1篇 |
1981年 | 1篇 |
排序方式: 共有982条查询结果,搜索用时 296 毫秒
361.
近两年来,雾霾天气不断侵扰我国,尽管有关部门和各级政府采取了一系列措施,仍难产生立竿见影的效果。能否积极有效地改善环境质量特别是改善城市空气质量是考验我国生态环境治理体系和治理能力的重大课题。本文提出了将城市公交全面电力化作为突破口的有益思考。 相似文献
362.
We study the relationship between corporate governance and firms׳ environmental innovation. Exploiting changes in antitakeover legislation in the US, we show that worse governed firms generate fewer green patents relative to all their innovations. This negative effect is greater for firms with a smaller share of institutional ownership, with a smaller stock of green patents, and with more binding financial constraints. Investigating regulatory and industry variations, we also find more pronounced effects for firms operating in states with lower pollution abatement costs, and in sectors less dependent on energy inputs. Overall, our results suggest that ineffective corporate governance may constitute a major obstacle to environmental efficiency. 相似文献
363.
A company does not only generate goods and services which meet the requirements in terms of deadlines, costs, quality and environment, but it also generates knowledge that must be capitalized. In order for a company to benefit from the skills and competences acquired during the realization of a project, some processes of memorization prove to be necessary. This article fits in this context and aims at suggesting a knowledge capitalization model in order to create a capital of environmental knowledge.To illustrate our suggestion, we have chosen an Environmental Performance Contract (EPC) signed by tens of Algerian companies which are reputed for their pollution of the environment. Capitalizing this knowledge allows these companies to anticipate on their environmental management and to guarantee the success of the EPC. 相似文献
364.
Chi Zhang Wenhui Kuang Jianguo Wu Jiyuan Liu Hanqin Tian 《Frontiers of Environmental Science & Engineering》2021,15(2):29
365.
Environmental Impact Assessment Under the National Environmental Policy Act and the Protocol on Environmental Protection to the Antarctic Treaty 总被引:3,自引:0,他引:3
US government actions undertaken in Antarctica are subject to the requirements of both the Protocol and the US National Environmental
Policy Act (NEPA). There are differences in the scope and intent of the Protocol and NEPA; however, both require environmental
impact assessment (EIA) as part of the planning process for proposed actions that have the potential for environmental impacts.
In this paper we describe the two instruments and highlight key similarities and differences with particular attention to
EIA. Through this comparison of the EIA requirements of NEPA and the Protocol, we show how the requirements of each can be
used in concert to provide enhanced environmental protection for the antarctic environment. NEPA applies only to actions of
the US government; therefore, because NEPA includes certain desirable attributes that have been refined and clarified through
numerous court cases, and because the Protocol is just entering implementation internationally, some recommendations are made
for strengthening the procedural requirements of the Protocol for activities undertaken by all Parties in Antarctica.
The Protocol gives clear and strong guidance for protection of specific, valued antarctic environmental resources including
intrinsic wilderness and aesthetic values, and the value of Antarctica as an area for scientific research. That guidance requires
a higher standard of environmental protection for Antarctica than is required in other parts of the world. This paper shows
that taken together NEPA and the Protocol call for closer examination of proposed actions and a more rigorous consideration
of environmental impacts than either would alone. Three areas are identified where the EIA provisions of the Protocol could
be strengthened to improve its effectiveness. First, the thresholds defined by the Protocol need to be clarified. Specifically,
the meanings of the terms “minor” and “transitory” are not clear in the context of the Protocol. The use of “or” in the phrase
“minor or transitory” further confuses the meaning. Second, cumulative impact assessment is called for by the Protocol but
is not defined. A clear definition could reduce the chance that cumulative impacts would be given inadequate consideration.
Finally, the public has limited opportunities to comment on or influence the preparation of initial or comprehensive environmental
evaluations. Experience has shown that public input to environmental documents has a considerable influence on agency decision
making and the quality of EIA that agencies perform. 相似文献
366.
Even though “sustainable development” seems to have emerged as the development paradigm of the 1990s, a great deal of vagueness
still surrounds the meaning, definition, and theoretical underpinnings of the concept. There is also a general lack of emphasis
on the spatial dimension of sustainable development when developing relevant conceptual or environmental accounting frameworks.
In clarifying the concept, this article proposes a definition that explicitly incorporates the temporal as well as the spatial
dimension of sustainability. It also develops a logically consistent conceptual framework for the analysis and evaluation
of sustainable development, following a spatial systems approach. Five interconnected aspatial subsystems or subsets of a
spatial system are identified and their respective operational dimensions discussed. A proposed composite index calleddegree of stainable development (DSD) and its five component indicators are also outlined. The difficulties involved in operationalizing the DSD measure
and the conceptual framework are noted, and the various tasks that need to be undertaken in this regard are specified. It
is concluded that future research utilizing the proposed conceptual framework should not only foster the development of appropriate
methodologies for the comparative evaluation of sustainable development at global, national, or regional scales, but also
offer insights to appropriate decision makers at various levels regarding available options and alternative actions for the
healthy development of their respective societies. 相似文献
367.
Derek Armitage Rob C. de Lo? Michelle Morris Tom W. D. Edwards Andrea K. Gerlak Roland I. Hall Dave Huitema Ray Ison David Livingstone Glen MacDonald Naho Mirumachi Ryan Plummer Brent B. Wolfe 《Ambio》2015,44(5):353-366
In this policy perspective, we outline several conditions to support effective science–policy interaction, with a particular emphasis on improving water governance in transboundary basins. Key conditions include (1) recognizing that science is a crucial but bounded input into water resource decision-making processes; (2) establishing conditions for collaboration and shared commitment among actors; (3) understanding that social or group-learning processes linked to science–policy interaction are enhanced through greater collaboration; (4) accepting that the collaborative production of knowledge about hydrological issues and associated socioeconomic change and institutional responses is essential to build legitimate decision-making processes; and (5) engaging boundary organizations and informal networks of scientists, policy makers, and civil society. We elaborate on these conditions with a diverse set of international examples drawn from a synthesis of our collective experiences in assessing the opportunities and constraints (including the role of power relations) related to governance for water in transboundary settings. 相似文献
368.
Have research interests in environmental psychology changed over the years? If so, in which direction? What can we learn from the past to direct future research? To answer these questions, empirical studies published in Environment & Behavior (E&B) and in Journal of Environmental Psychology (JEP), from their foundation to 2005, were reviewed. The articles were classified in relation to the following criteria: mode of human–environment transaction, research topic, type of setting and function of places, socio-demographic characteristics and environmental role of people, mode of presentation of the setting, sampling procedure, and source of data. Results showed both variations through the years and differences between the journals. The main research topics can be identified as the study of the residential environment, environmental cognition, observation of actual behaviour in the environment, and concern for the ecological value of the global environment. Trends in research interests showed a stable interest in the analysis of the built environment, a more place-specific approach in the beginning, strongly anchored in observational studies, and a central concern for sustainability and conservation of the environment in recent years. With respect to journals, the central role attributed to psychology by JEP, and the stronger participation by designers and planners in E&B, are reflected in the emphases given to the different modes of human–environment transaction. Trends in research interests help address the strengths and weaknesses of the discipline, thus suggesting future directions of inquiry. 相似文献
369.
Situating Hazard Vulnerability: People’s Negotiations with Wildfire Environments in the U.S. Southwest 总被引:1,自引:1,他引:0
This article is based on a multimethod study designed to clarify influences on wildfire hazard vulnerability in Arizona’s
White Mountains, USA. Findings reveal that multiple factors operating across scales generate socially unequal wildfire risks.
At the household scale, conflicting environmental values, reliance on fire insurance and firefighting institutions, a lack
of place dependency, and social vulnerability (e.g., a lack of financial, physical, and/or legal capacity to reduce risks)
were found to be important influences on wildfire risk. At the regional-scale, the shift from a resource extraction to environmental
amenity-based economy has transformed ecological communities, produced unequal social distributions of risks and resources,
and shaped people’s social and environmental interactions in everyday life. While working-class locals are more socially vulnerable
than amenity migrants to wildfire hazards, they have also been more active in attempting to reduce risks in the aftermath
of the disastrous 2002 Rodeo-Chediski fire. Social tensions between locals and amenity migrants temporarily dissolved immediately
following the disaster, only to be exacerbated by the heightened perception of risk and the differential commitment to hazard
mitigation displayed by these groups over a 2-year study period. Findings suggest that to enhance wildfire safety, environmental
managers should acknowledge the environmental benefits associated with hazardous landscapes, the incentives created by risk
management programs, and the specific constraints to action for relevant social groups in changing human-environmental context. 相似文献
370.