全文获取类型
收费全文 | 292篇 |
免费 | 42篇 |
国内免费 | 15篇 |
专业分类
安全科学 | 47篇 |
废物处理 | 13篇 |
环保管理 | 84篇 |
综合类 | 100篇 |
基础理论 | 42篇 |
环境理论 | 1篇 |
污染及防治 | 12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 | 25篇 |
2020年 | 17篇 |
2019年 | 20篇 |
2018年 | 18篇 |
2017年 | 12篇 |
2016年 | 27篇 |
2015年 | 16篇 |
2014年 | 9篇 |
2013年 | 17篇 |
2012年 | 15篇 |
2011年 | 18篇 |
2010年 | 14篇 |
2009年 | 15篇 |
2008年 | 14篇 |
2007年 | 9篇 |
2006年 | 16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349条查询结果,搜索用时 593 毫秒
211.
Based on the meaning of economic theory as well as analysis of relevant characteristics of watershed environmental management, a watershed environmental management framework will be created, with building systems of theory, principles, methods, and supporting measures. Through the general structure, the watershed environmental management system design can be explored to optimize the allocation of resources and achieve coordinated development of watershed economic growth and environmental protection. 相似文献
212.
耕地质量指标体系的构建 总被引:8,自引:0,他引:8
根据土地质量的概念及其影响因素,构建了耕地质量指标体系。认为耕地质量的影响因素包括自然、社会和经济因素,而PSR(压力——状态——响应)框架则是构建耕地质量指标体系的最佳思路。在此基础上提出具体评价指标,其中生态功能指标体系包括土壤质量、气候质量、生物多样性质量和景观生态质量,生产功能指标体系(即耕地生产力)则通过耕地生产潜力、耕地基础地力和耕地现实生产力进行评价。 相似文献
213.
Peng Li Lingqian Dong Han Jin Jingren Yang Yonghui Tu Chao Wang Yiliang He 《Frontiers of Environmental Science & Engineering》2022,16(12):159
214.
加强我国高校应急管理能力建设的策略分析 总被引:2,自引:0,他引:2
从不同的角度考虑可将高校应急管理系统分为4个过程、12个环节、30个指标。通过对高校应急管理能力内涵结构的过程环节分析,指出我国高校应急管理能力的预防与总结学习是目前相对薄弱的方面,并对其中2个过程的6个环节进行深入探讨。根据当前我国高校应急管理的预防与学习环节的薄弱之处,提出综合加强高校应急管理能力的若干策略。并提出开展突发事件风险控制与预警管理工作、建设高校突发事件信息与档案平台等任务,是提升我国高校应急管理能力的关键措施。 相似文献
215.
Prospects for the co‐management of mangrove ecosystems on the North Brazilian coast: Whose rights,whose duties and whose priorities? 总被引:2,自引:0,他引:2
This article describes the co‐management approach in situations of open access to and of increasing pressure on resources, using a mangrove coastal zone in North Brazil as an example. Co‐management clearly has the potential to turn nonviable, de facto open access to mangroves into effective common property management. Alliances of different political and ideological groups have been formed under the RESEX (reservas extrativistas — natural resource user reserve) model of coastal co‐management. Local economic interests have been mobilized as client constituencies. The RESEX system of co‐management assigns additional duties to both co‐managing parties, i.e., the state administration and the local users, in exchange for new rights. The authors argue that local support for the RESEX model has been gained on partially distorted premises. As the public authority passes on responsibility for management to local users under the RESEX model, this entails a number of duties for the local users. Thus local users assume the duty to implement and monitor resource management; they also appear to gain the right to take local decisions, such as excluding outsiders from resource access, and designing local resource management rules. However, as this article shows with two examples, some important new rights for local users under the RESEX co‐management concept are contrary to environmental legislation in force. This conflict is at present unresolved. It is argued that increased transparency about their precise rights for local resource co‐managers will considerably improve the prospects of coastal co‐management in Brazil. 相似文献
216.
The Guanabara Bay basin, SE Brazil, is shown as an experimental site to evaluate development and sustainability in coastal areas. We developed a Driver–Pressure–State–Impact–Response (DPSIR) framework in a practical context to integrate natural and socio-economic indicators. Sustainability reflects public policies towards the utilization of natural resources. Cost-benefit analysis (CBA) included in DPSIR evaluates losses and benefits resulting from such policies. CBA has some limitations due to the difficulty of valuating environmental goods and services. Instead of valuating them we propose to combine sustainability indicators and defensive expenditures for the implementation of public policies. This approach agrees with the environmental conservation paradigm implicit in sustainable development. It allows an estimation of the physical natural capital depreciation (PNCD), by using it to correct the gross domestic product (GDP) of the study area, and demonstrating the present non-sustainable characteristics of the current policies applied to the area. 相似文献
217.
218.
浮置板轨道结构在城市轨道交通减振降噪上的应用 总被引:11,自引:0,他引:11
随着城市轨道交通的快速发展,其引起的振动和噪声问题得到国内外的重视,如何采用有效的减振降噪措施降低振动的环境影响成为热点问题之一。浮置板轨道隔振措施在国外有几十年的历史,得到广泛的应用,并在近几年成功应用于我国的城市轨道交通系统。在目前的减振措施中,浮置板轨道减振效果最好,可达20~40dB。根据不同的分类方法,评述了浮置板轨道的种类及应用情况,运用动力学原理分析了浮置板轨道的隔振原理。详细介绍了浮置板轨道在国内外应用的实例和减振降噪实测结果,认为浮置板轨道结构是一种高效的减振降噪措施,具有广阔的发展前景。 相似文献
219.
Sylvie Pouteau 《Journal of Agricultural and Environmental Ethics》2002,15(3):289-303
Substantial equivalence (SE) has beenintroduced to assess novel foods, includinggenetically modified (GM) food, by means ofcomparison with traditional food. Besides anumber of objections concerning its scientificvalidity for risk assessment, the maindifficulty with SE is that it implies that foodcan be qualified on a purely substantial basis.SE embodies the assumption that only reductivescientific arguments are legitimate fordecision-making in public policy due to theemphasis on legal issues. However, the surge ofthe food debate clearly shows that thistechnocratic model is not accepted anymore.Food is more than physico-chemical substanceand encompasses values such as quality andethics. These values are legitimate in theirown right and require that new democraticprocesses are set up for transverse,transdisciplinary assessment in partnershipwith society. The notion of equivalence canprovide a reference scale in which to examinethe various legitimate factors involved:substance (SE), quality (QualitativeEquivalence: QE), and ethics (EthicalEquivalence: EE). QE requires that newqualitative methods of evaluation that are notbased on reductive principles are developed. EEcan provide a basis for the development of anEthical Assurance as a counterpart of QualityAssurance in the food sector. In France, asecond circle of expertise is being set up toaddress the social issues in food public policybeside classical risk assessment by the firstcircle of expertise. Since ethics is likely tobecome an organizing principle of the secondcircle, the equivalence ethical framework canprove instrumental in this context. 相似文献
220.
论生态城市与滨海型生态城市的建设 总被引:1,自引:0,他引:1
赵英姿 《辽宁城乡环境科技》2006,26(3):60-61,64
生态城市是实现可持续发展的重要基础。20世纪90年代以来,随着我国城市化进程的加快,生态城市开始成为人们聚焦的一个热点。本文就如何科学把握生态城市的内涵,如何正确设计和评价生态城市建设,以及滨海型生态城市建设目标等方面进行了探讨和研究。 相似文献