全文获取类型
收费全文 | 297篇 |
免费 | 46篇 |
国内免费 | 19篇 |
专业分类
安全科学 | 48篇 |
废物处理 | 16篇 |
环保管理 | 84篇 |
综合类 | 109篇 |
基础理论 | 43篇 |
环境理论 | 1篇 |
污染及防治 | 11篇 |
评价与监测 | 4篇 |
社会与环境 | 34篇 |
灾害及防治 | 12篇 |
出版年
2023年 | 6篇 |
2022年 | 16篇 |
2021年 | 28篇 |
2020年 | 20篇 |
2019年 | 21篇 |
2018年 | 18篇 |
2017年 | 13篇 |
2016年 | 27篇 |
2015年 | 17篇 |
2014年 | 9篇 |
2013年 | 19篇 |
2012年 | 15篇 |
2011年 | 18篇 |
2010年 | 14篇 |
2009年 | 15篇 |
2008年 | 15篇 |
2007年 | 9篇 |
2006年 | 17篇 |
2005年 | 15篇 |
2004年 | 8篇 |
2003年 | 6篇 |
2002年 | 6篇 |
2001年 | 10篇 |
2000年 | 5篇 |
1999年 | 5篇 |
1997年 | 5篇 |
1995年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1986年 | 1篇 |
排序方式: 共有362条查询结果,搜索用时 15 毫秒
191.
192.
中国近岸海域环境监测技术路线研究 总被引:5,自引:5,他引:0
针对中国"十二五"期间近岸海域环境形势和管理需求,在分析国内外监测技术发展趋势的基础上,提出现阶段近岸海域环境监测技术路线应以优化布点、现场采样、实验室分析、浮标自动监测和卫星遥感为基本手段,重点针对河口、海湾区域富营养化和生态效应问题,依托国家、省/分站、地(市)和县(区)四级监测运行模式,完善近岸海域质量、海岸带环境、陆源输入通量、监控预警和事故应急监测方法,构建基于生态目标的近岸海域环境综合监测和评价体系,并对各类监测点位、监测指标和监测频次进行了优化筛选。 相似文献
193.
This paper presents the results of an analysis of deliberative norms in the framework for Environmental Impact Assessment (EIA) in roads planning in Sweden. The more specific question is how this framework has responded to the shift towards more deliberative approaches to planning and decision making, advocated in planning theory and policy literature over the last decade. The analysis, which compares the current framework and guidance with an earlier iteration, identifies a shift towards deliberation; deliberative norms are present, and even dominate recent guidance. However, an instrumental norm permeates both the former and the current guidance, suggesting that even as a language of consultation is replaced by one of deliberation, the intention remains to secure and legitimise a smooth development pathway. Evidence from interviews with professionals working in the Swedish EIA system highlights the difficulties of navigating these uncertainties in practice. By opening up critical analysis of deliberative norms as they shape the conditions for practice, this study contributes to the continuous development of planning practice, by supporting a more normatively reflexive approach to framework-design. 相似文献
194.
建立健全生态产品价值实现机制是践行习近平生态文明思想的重要举措。随着"绿水青山就是金山银山"理念转化探索实践的不断深入,围绕生态产品供给和价值实现形成的新产业、新业态、新模式不断涌现,生态产品产业有望成为经济高质量发展的新动力和生态文明建设的新模式。本文基于生态产品价值实现的理论和实践,首次提出了生态产品第四产业的概念及内涵特征,初步分析了生态产品第四产业的形成机制和构成要素。结合不同市场属性生态产品的价值实现路径,初步梳理了生态产品第四产业形态,界定了其产业范围,设计了衡量生态产品第四产业核算与发展指标体系,并从供给、消费、交易和利益分配等维度提出了促进生态产品第四产业的政策保障。研究认为,我国生态产品第四产业发展具有很好的基础和前景,应以习近平生态文明思想为指导,加快完善生态产品价值实现机制,让生态产品第四产业发展成为我国新时期的朝阳绿色产业。 相似文献
195.
The EU Water Framework Directive (WFD) aims to protect the ecological status of coastal waters. To establish acceptable boundaries between good and moderate ecological status, the WFD calls for reference conditions practically undisturbed by human impact. For Denmark, the nitrogen (N) concentrations present around year 1900 have been suggested to represent reference conditions. As the N load of coastal waters relates closely to runoff from land, any reduction in load links to agricultural activity. We challenge the current use of historical N balances to establish WFD reference conditions and initiate an alternative approach based on parish-level land-use statistics collected 1896/1900 and N concentrations in root zone percolates from experiments with year 1900-relevant management. This approach may be more widely applicable for landscapes with detailed historic information on agricultural activity. Using this approach, we find an average N concentration in root zone percolates that is close to that of current agriculture. Thus, considering Danish coastal waters to be practically unaffected by human activity around year 1900 remains futile as 75% of the land area was subject to agricultural activity with a substantial potential for N loss to the environment. It appears unlikely that the ecological state of coastal waters around year 1900 may serve as WFD reference condition. 相似文献
196.
为促进西部大开发战略的实施和西部地区可持续发展 ,就西部地区环境政策框架和环境管理能力建设两方面进行了初步研究 ,提出了一些建议 相似文献
197.
Jana Moldanov Ida-Maja Hassellv Volker Matthias Erik Fridell Jukka-Pekka Jalkanen Erik Ytreberg Markus Quante Jenny Trltzsch Ilja Maljutenko Urmas Raudsepp K. Martin Eriksson 《Ambio》2022,51(3):754
Shipping is an important source of pollution affecting both atmospheric and aquatic environments. To allow for efficient mitigation of environmental degradation, it is essential to know the extent of the impacts of shipping in relation to other sources of pollution. Here, we give a perspective on a holistic approach to studies of the environmental impacts of operational shipping through presentation of an assessment framework developed and applied on a case of shipping in the Baltic Sea. Through transfer of knowledge and concepts, previously used in assessments of air pollution, now applied to assessments of marine pollution and underwater noise, the horizon of understanding of shipping-related impacts is significantly improved. It identifies the main areas of environmental degradation caused by shipping and potential improvements through legislation and technological development. However, as the vast majority of contaminants discharged into the sea are not routinely monitored and assessed, the links between pressure of contaminants from shipping and environmental state and impacts will not be caught in the current environmental regulatory frameworks. 相似文献
198.
5.12汶川特大地震灾害引起了社会和学术界对地震灾后重建规划广泛的关注。地震灾后重建规划几乎包含了当前规划领域中的所有挑战,是速度和质量兼顾、人性与理性权衡、社会经济与环境效益统一、多方博弈的过程,对灾后重建规划环评也从理论到实践层面提出了新的挑战。本文在对灾后重建规划特点进行归纳的基础上提出灾后重建规划环评相应具备的特点,即早期介入、与规划过程融合、增加灾害情景、突出规划协调性分析和应用反规划思路等特点,并进一步以《国家汶川地震灾后重建总体规划》为例说明了与灾后规划融合的环评流程、灾后规划环评的关键内容和评价思路。在对常用规划环评方法从信息成本、工作成本、客观和量化程度等原则进行评价后认为灾后重建规划环境评价中应有效利用比较评价法、GIS叠图法、生态承载力评价法等相对快捷、成熟或客观的方法。 相似文献
199.
中国绿色经济战略研究 总被引:1,自引:0,他引:1
以联合国"里约+20"会议为背景,在梳理世界主要国家绿色经济发展进程、绿色经济理论研究和实践探索,分析当前绿色经济发展现状和政策的基础上,探讨了我国绿色经济发展战略框架问题。认为:政府层面要加强对绿色产业发展引导、努力完善激励约束政策,保障绿色经济的稳健发展,重视绿色科技人才队伍建设,增强绿色产业自主创新能力。目前要解决的问题,一是通过建立排污权交易市场,实现环境价值的货币化;二是建立健全与绿色经济核算相关的法规制度;三是实施绿色GDP考核制度,从根本上改变经济增长方式。企业层面要重视绿色科技人才队伍建设,增强绿色产业自主创新能力,实现绿色产业的发展与调整。行业层面要着重节能建筑、可再生能源、可持续交通、可持续农业和生态基础设施建设等。消费者层面要加强绿色理念宣传,积极倡导绿色消费。从国际贸易的角度,应积极争取发达国家提供技术支持和技术培训,以帮助环保商品和服务行业的发展。 相似文献
200.
The Chinese government has recently been attaching increasing importance to the application of effective legal tools to tackle land degradation (LD) issues. Based on the concept of sustainable development, China began developing and reaping the benefits of environmental and natural resources legislation including LD control regulations in the 1990s. In the past three years, some central‐western provinces in China have been implementing a “ People's Republic of China/Global Environment Facility (PRC/GEF ) Partnership on LD Control of Dryland Ecosystems”, which is based on an integrated ecosystem management (IEM) approach. IEM is designed to achieve a balanced, scientific and participatory approach to natural resources management, which creates the potential to improve the quality of Chinese environmental law and policy procedures. The paper studies the existing Chinese national laws and regulations pertinent to LD control within 9 areas covering land, desertification, soil erosion, grassland, forest, water, agriculture, wild animals and plants, and environment protection in detail, against IEM principles and basic legal elements. The main objective is to identify problems and provide feasible solutions and recommendations for the improvement of the existing laws and regulations. The authors conclude that the development of an improved national legislative framework is essential if LD control is to be successfully achieved. The paper is partly based on Component 1 — Improving Policies, Laws and Regulations for Land Degradation Control under PRC/GEF Partnership on Land Degradation in Dryland Ecosystems (TA 4357). 相似文献