全文获取类型
收费全文 | 558篇 |
免费 | 24篇 |
国内免费 | 9篇 |
专业分类
安全科学 | 139篇 |
废物处理 | 8篇 |
环保管理 | 191篇 |
综合类 | 160篇 |
基础理论 | 15篇 |
污染及防治 | 22篇 |
评价与监测 | 24篇 |
社会与环境 | 28篇 |
灾害及防治 | 4篇 |
出版年
2024年 | 1篇 |
2023年 | 4篇 |
2022年 | 15篇 |
2021年 | 19篇 |
2020年 | 31篇 |
2019年 | 9篇 |
2018年 | 5篇 |
2017年 | 6篇 |
2016年 | 16篇 |
2015年 | 18篇 |
2014年 | 31篇 |
2013年 | 38篇 |
2012年 | 40篇 |
2011年 | 47篇 |
2010年 | 33篇 |
2009年 | 33篇 |
2008年 | 33篇 |
2007年 | 43篇 |
2006年 | 24篇 |
2005年 | 26篇 |
2004年 | 11篇 |
2003年 | 12篇 |
2002年 | 5篇 |
2001年 | 10篇 |
2000年 | 16篇 |
1999年 | 7篇 |
1998年 | 10篇 |
1997年 | 6篇 |
1996年 | 6篇 |
1995年 | 6篇 |
1994年 | 3篇 |
1993年 | 2篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 4篇 |
1987年 | 5篇 |
1986年 | 3篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1983年 | 3篇 |
1982年 | 1篇 |
排序方式: 共有591条查询结果,搜索用时 296 毫秒
351.
352.
为解决目前电网企业应急预案体系建设存在的内容泛化、管理成本高等问题,提出基于任务特征的应急预案体系重构思路,运用情景构建方法,开展电网企业突发事件影响场景和处置任务分析,得出7个影响场景、10类处置任务和38项子任务。结果表明:电网企业应急处置任务具有收敛性特征。通过应急预案与处置任务匹配,重构应急预案体系结构和预案定位,构建以通用性部门应急预案及现场处置方案为建设重点的新型应急预案体系,形成“通用性预案工具箱”,实现预案衔接“无缝化”、预案内容“本地化”、管理成本“聚焦化”。 相似文献
353.
POEMS: A Case Study of an Italian Wine-Producing Firm 总被引:1,自引:1,他引:0
Over the last decade, researchers paid much attention to concepts such as Design for Environment, Extended Producer Responsibility,
Responsible Chain Management, and Eco-design. Many management tools and standards (such as EMAS, ISO 14001, LCA, EPD, Ecolabel)
have been developed to support companies in the evaluation and management of their environmental performance and to pursue
continual environmental improvement. The more recent development of the aforesaid fields looks at interorganizational environmental
management. Such an approach can complement the more traditional intraorganizational corporate environmental management approaches
and tools. A typical example of this new trend is the Product Oriented Environmental Management System (POEMS), which represents
the natural evolution of the above-mentioned tools, combining the features of EMS, EPD and Ecolabel. Although the structure
of the POEMS is still not standardized, many experimental applications have yet been carried out in Europe. In developing
a POEMS, a company needs to determine all of the environmental impacts caused at all life-cycle stages of the product and,
ideally, to reduce all of them through a continual commitment. The aim of the present study was to perform a survey of the
developed POEMS models and to analyze their peculiarities and drawbacks in the application to Small and Medium Enterprises.
A case study regarding an Italian winery company is presented. The study analyzes the structure and the activities of the
examined firm, in order to estimate direct and indirect environmental impacts following a life-cycle approach. The chosen
functional unit is a 0.75-L bottle of red wine. The article also suggests some solutions to improve the environmental performances
of the firm’s products. 相似文献
354.
Outreach nurseries are favored conservation and social forestry tools globally, but, as with many integrated conservation
and development programs (ICDPs), they do not always produce anticipated results. A synopsis of the experience of South African
practitioners is provided in this study of 65 outreach nurseries. South African outreach nurseries frequently include financial
objectives, creating additional challenges in simultaneously attaining conservation and socioeconomic goals. Progress was
hindered by biophysical problems (e.g., lack of water, poor soils, etc.) as well as the harsh socioeconomic conditions facing
most communities in which nurseries had been established. Attaining financial viability was challenging. Business management
skills were often restricted, and few viability studies included adequate market research. Costs to community participants
were usually high, and benefits were limited. Conservation objectives were frequently lost in the struggle to attain financial
viability. The management of social processes also proved challenging. Although small scale and relatively straightforward
compared with many ICDPs, nurseries usually require substantial institutional support, including a range of technical, business,
and development services. Project time frames need to be reconsidered, as practitioners estimate that it takes 5–10 years
for nurseries to start meeting objectives, and donors and implementing agencies often operate on 2–3-year project cycles.
Detailed viability studies are essential, incorporating a social probe and an assessment of potential impacts of projects
on community participants. Progress needs to be continuously evaluated to enable institutions and community participants to
adapt to changing conditions as well as ensure that the spectrum of objectives are being achieved. 相似文献
355.
356.
外向型经济地区经济发达、城镇化水平高、外来人口众多,使得农村环境问题日益突出。通过对典型外向型经济地区昆山市全部行政村发放调查表并结合经验系数法,调查和统计了外向型经济地区农村固废的产生种类、产生量和处置状况。统计分析结果显示,外向型经济地区农村的主要固体废弃物为生活垃圾、农业固废、禽畜粪便和农村企业固废。根据这些污染状况,提出了农村固废处置的管理对策。 相似文献
357.
本文通过对成都市府南河及都江堰灌溉系统的水资源利用现状分析,结合我国有关环保法规、水污染防治对策及工程实例,提出了城乡结合,把府南河建设成为既是城市水景又是农灌水库的建议,为解决成都市府南河水质污染与水量不足问题提出了一条新的途径。 相似文献
358.
阐述了建筑施工企业建立安全管理体系的重要性 ;提出了安全管理体系的主要内容 ;指出了形成安全管理体系的途径 ;最后强调 ,全体员工对安全生产的态度、责任感和安全科技文化素质是安全管理体系中最重要的因素之一。 相似文献
359.
Mark V. Brady Mikael Skou Andersen Anna Andersson Emils Kilis Sanna-Riikka Saarela Martin Hvarregaard Thorse 《Ambio》2022,51(1):69
In this perspective article, we provide recommendations for strengthening the policy framework for protecting the Baltic Sea from agricultural nutrient pollution. The most striking weakness is the lax implementation of prescribed abatement measures, particularly concerning manure management, in most countries. Institutions of the EU should also be leveraged for achieving Baltic Sea Action Plan (BSAP) goals. In contrast to the Helsinki Convention, the European Union has economic, political and legal mandates to further implementation and compliance. Equally important is the need for strengthening of local institutions, particularly Water Boards and independent agricultural advisory services in the eastern Baltic Sea Region countries. There is also an urgent need for implementation of voluntary land-use measures where EU funding available to farmers is more broadly and effectively used by providing it on the basis of estimated abatement performance, which can be realized through modelling. The enormous potential for funding performance-based schemes, manure management infrastructure and advisory services through the EU’s Common Agricultural Policy are currently underutilized.Supplementary Informationhe online version contains supplementary material available at 10.1007/s13280-021-01573-3. 相似文献
360.
Martin Hvarregaard Thorse Mikael Skou Andersen Mark V. Brady Morten Graversgaard Emils Kilis Anders Branth Pedersen Samuli Pitzn Helena Valve 《Ambio》2022,51(1):36
Following decades of international collaboration to restore the Baltic Sea, we provide an assessment of the domestic implementation of measures agreed to limit diffuse agricultural pollution and the patterns of policy instruments applied. Despite the Helsinki Convention being unusually specific in detailing what measures countries should introduce, we find many shortcomings. These are most pronounced in the larger countries (Poland, Germany and Russia), while smaller countries perform better, notably Sweden and Estonia. The patterns of policy instruments applied differ, influenced by domestic politics. The limited use of complementary policy instruments suggests that other priorities overrule full and effective implementation, with engagement mirroring the advantages that a restored Baltic Sea can bring to countries. Using the European Agricultural Fund for Rural Development to support farmers in managing nutrients, particularly advisory services and investments in modern manure management technologies, represents a significant opportunity for reducing agricultural pollution in most countries.Supplementary InformationThe online version contains supplementary material available at 10.1007/s13280-021-01549-3. 相似文献