首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   227篇
  免费   21篇
  国内免费   1篇
安全科学   26篇
废物处理   5篇
环保管理   81篇
综合类   77篇
基础理论   26篇
环境理论   4篇
污染及防治   7篇
评价与监测   4篇
社会与环境   16篇
灾害及防治   3篇
  2023年   3篇
  2022年   4篇
  2021年   10篇
  2020年   9篇
  2019年   9篇
  2018年   11篇
  2017年   14篇
  2016年   15篇
  2015年   13篇
  2014年   11篇
  2013年   26篇
  2012年   13篇
  2011年   18篇
  2010年   14篇
  2009年   9篇
  2008年   6篇
  2007年   3篇
  2006年   13篇
  2005年   6篇
  2003年   7篇
  2002年   4篇
  2001年   6篇
  2000年   6篇
  1999年   1篇
  1998年   4篇
  1997年   1篇
  1996年   2篇
  1994年   1篇
  1993年   1篇
  1991年   1篇
  1986年   1篇
  1985年   1篇
  1980年   1篇
  1979年   1篇
  1978年   1篇
  1977年   2篇
  1973年   1篇
排序方式: 共有249条查询结果,搜索用时 31 毫秒
61.
孔宇  甄峰  李兆中  傅行行 《自然资源学报》2019,34(10):2186-2199
智慧社会的出现与发展影响着人地关系,而智能技术作为智慧社会崛起的主要动力与发展的重要支撑,正在改变着国土空间的保护、开发与治理模式,也对国土空间规划编制方法提出了新要求。当前规划编制中,智能技术在国土空间规划中的应用虽然已经有了一定的探索,在技术层面也有很多实践,但缺少对智能技术应用于国土空间规划的整体性思考。基于“生态文明”基础与“以人为本”的核心理念,在对传统规划编制与当前智能技术应用梳理的基础上,从智能感知与收集、智能分析与处理、智能评估和智能决策四个方面,系统地构建全流程的智能技术辅助国土空间规划编制的框架,以适应当前国土空间规划提出的新要求,辅助编制更合理、科学、智慧的方案。  相似文献   
62.
Community water supply programmes are seen as instrumental in achieving the goal of ‘safe’ water for all. Women, a principal target group of these programmes, are to be benefited with greater convenience, enhanced socio‐cultural opportunities and better health for themselves and their families, provided through improved water facilities. Water supply programmes largely consist of three essential components, namely: technology, people and institutions. Although such programmes are intended to benefit women members of local communities, scant attention is paid to the impacts of the socio‐cultural context of the community on these programmes. This article explores the influence of social and cultural intricacies on the implementation of community water supply programmes, and assesses their effectiveness. The article offers important lessons for the design and implementation of this type of programme. It concludes that the local socio‐cultural context sets the stage for programme implementation, being a dynamic factor that determines actual access to water sources, more so than mere physical availability, which is often used as a criterion for programme performance. The article stresses the urgent need to integrate socio‐cultural factors as a fourth dimension in designing community water supply programmes, and suggests practical measures for enhancing the effectiveness of such programmes.  相似文献   
63.
ABSTRACT: Acute criteria are assigned to the fish and wildlife propagation beneficial use in Oklahoma's water quality standards. Dye studies are analyzed to show that these criteria can be implemented through acute regulatory mixing zones. Acute regulatory mixing zones may be defined as areas in receiving streams where acute numerical criteria may be exceeded without causing acute toxicity. Acute regulatory mixing zones are used to obtain acute waste load allocations. If effluent loading does not exceed acute waste load allocation, acute criteria exceedance is confined to the acute regulatory mixing zone and there is no acute toxicity in the receiving stream. Waste load allocations for acute and chronic criteria are compared to determine which is appropriate to develop permit limits for the dye studies.  相似文献   
64.
/ In 1990, the United States officially entered the era of pollution prevention with passage of the Pollution Prevention Act. This paper analyzes EPA's implementation of the Pollution Prevention Act from its passage in 1990 to the present. It examines the barriers EPA must overcome if it is to effectively integrate pollution prevention into its existing regulatory structure, including impediments created by statutory and organizational structure, the existing relationship between EPA and the groups it regulates, the fragmented implementation scheme of national environmental regulation, the balancing of conflicting demands advanced by powerful interests, industry's economic and technical concerns, and institutional inertia. It also examines issues such as industry commitment, the limits of prevention, and measurement concerns. The findings suggest that EPA's efforts at shifting to a pollution prevention regulatory ethic that holds primacy over pollution control are mixed. Its organizational structure, statutory authority, and incentives system still reflect a single-medium pollution control focus, appropriations for pollution prevention programs and activities are paltry compared to traditional pollution control programs, and participation in the program is voluntary. Yet, the findings also point to some promising programs that are working to institutionalize a pollution prevention regulatory ethic, and many states appear very committed to the concept.KEY WORDS: Pollution prevention; Source reduction; Pollution control; Alternative regulatory design; Barriers to implementation  相似文献   
65.
The rapid growth in motor vehicle activity in India and other rapidly industrializing low-income countries is contributing to high levels of urban air pollution, among other adverse socioeconomic, environmental, health, and welfare impacts. This paper first discusses the local, regional, and global impacts associated with air pollutant emissions resulting from motor vehicle activity, and the technological, behavioral, and institutional factors that have contributed to these emissions, in India. The paper then discusses some implementation issues related to various policy measures that have been undertaken, and the challenges of the policy context. Finally, the paper presents insights and lessons based on the recent Indian experience, for better understanding and more effectively addressing the transport air pollution problem in India and similar countries, in a way that is sensitive to their needs, capabilities, and constraints.  相似文献   
66.
European Union (EU) climate/energy targets and policies are poised for the first full climate policy cycle – from adoption and implementation of the policy package for 2020, to reform for 2030. A dynamic approach to the ways in which EU policies affect policy development is developed by applying theories of domestic implementation, policy feedback and integration. Implementation experiences in Poland – the ‘least climate ambitious’ EU member state – affected Polish preferences for reformed EU policies. Existing EU policies, their ‘fit’ with Poland’s energy interests and change in anticipation of future EU policies explain much of the variation in preferences. Second, policy feedback from Poland significantly affected the EU 2030 climate and energy framework. As yet, the EU has succeeded only partly in gathering momentum through a ‘snowball’ effect whereby positive policy feedback from implementation generates further steps.  相似文献   
67.
2013年《企业环境信用评价办法(试行)》印发后,各地在健全环保信用评价制度上做了不少探索,一些专家、学者也对企业环保信用评价制度做了一些研究,但针对全国实施情况和地区实施差异性的总体研究和深度总结较少。本文在系统搜集我国31个省、自治区、直辖市所发布的企业环保信用评价政策文件的基础上,从评价范围、评价方法和评价结果等方面对结合地方特点制订的21份文件进行剖析,并对政策实施效果及执行中存在的问题进行总结归纳,最后提出加快立法进度、完善政策体系和强化结果应用等对策建议。  相似文献   
68.
This article explores the strategies that were, and are being, used to facilitate the transition from scientific developmentto operational application of the South African River Health Programme (RHP). Theoretical models from the field of the management of technology are used to provide insight into the dynamics that influence the relationship between the creation and application of environmental programmes, and the RHP in particular. Four key components of the RHP design are analysed,namely the (a) guiding team, (b) concepts, tools and methods, (c) infra-structural innovations and (d) communication. These key components evolved over three broad life stages of the programme, which are called the design, growth and anchoring stages.  相似文献   
69.
环境监测站质量管理体系内部审核是监测站自我发现问题、分析问题、解决问题,实现质量管理体系持续改进的重要环节。通过总结当前环境监测站内审时在审核策划、实施审核、结果评价及跟踪验证等4个阶段的注意事项,提出了全面细致策划、严格实施审核、客观公正评价、深入实地验证等提高内部审核质量的对策和建议。  相似文献   
70.
综合评价现行江苏省海洋功能区划实施基本情况,能够全面检测区划实施和管理中的成效与不足,进一步提高新一轮区划编制的实效性和科学性,从而增强新一轮区划对沿海地区经济社会发展的调控作用。基于海洋功能区划的特殊性和对数模型效用函数综合评价法的可行性,从区划的执行情况、协调情况、实施效益和实施影响等4个方面,设计了16个具有代表性的指标用于定量评价江苏省海洋功能区划实施基本情况。结果表明,对数模型效用函数综合评价法简便、操作性强,可信度高,评价的结果与现实情况吻合度高。现行江苏省海洋功能区划的实施情况总体良好,区划得到了有效的执行,与全国海洋功能区划和全省海洋经济发展规划协调度高,产生了显著的经济、社会与生态效益  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号