全文获取类型
收费全文 | 4074篇 |
免费 | 130篇 |
国内免费 | 14篇 |
专业分类
安全科学 | 521篇 |
废物处理 | 61篇 |
环保管理 | 1023篇 |
综合类 | 1868篇 |
基础理论 | 191篇 |
环境理论 | 2篇 |
污染及防治 | 86篇 |
评价与监测 | 136篇 |
社会与环境 | 212篇 |
灾害及防治 | 118篇 |
出版年
2025年 | 13篇 |
2024年 | 38篇 |
2023年 | 44篇 |
2022年 | 60篇 |
2021年 | 97篇 |
2020年 | 153篇 |
2019年 | 88篇 |
2018年 | 61篇 |
2017年 | 106篇 |
2016年 | 104篇 |
2015年 | 138篇 |
2014年 | 191篇 |
2013年 | 172篇 |
2012年 | 207篇 |
2011年 | 269篇 |
2010年 | 198篇 |
2009年 | 171篇 |
2008年 | 139篇 |
2007年 | 228篇 |
2006年 | 240篇 |
2005年 | 190篇 |
2004年 | 179篇 |
2003年 | 165篇 |
2002年 | 150篇 |
2001年 | 156篇 |
2000年 | 160篇 |
1999年 | 110篇 |
1998年 | 80篇 |
1997年 | 75篇 |
1996年 | 53篇 |
1995年 | 53篇 |
1994年 | 25篇 |
1993年 | 44篇 |
1992年 | 16篇 |
1991年 | 6篇 |
1990年 | 9篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 5篇 |
1986年 | 4篇 |
1985年 | 1篇 |
1984年 | 1篇 |
1983年 | 2篇 |
1982年 | 2篇 |
1981年 | 2篇 |
1980年 | 1篇 |
1979年 | 1篇 |
1978年 | 2篇 |
1977年 | 4篇 |
1975年 | 1篇 |
排序方式: 共有4218条查询结果,搜索用时 0 毫秒
1.
2.
陈振宇 《辽宁城乡环境科技》2009,(4):24-26
通过对移动通信基站天线的电磁辐射分析和探讨,归纳了移动通信基站建设在施工期、营运期环境保护工作的重点与措施,对电磁环境影响评价制度与方法进行了系统的描述,并指出了今后的工作方向。 相似文献
3.
金雪美 《辽宁城乡环境科技》2014,(1):69-71
在酒店厨房工程设计和施工的实践工作基础上,对目前城市餐饮建设项目现状与居民生活环境之间存在的矛盾加以归纳、分析,根据问题现状,分别从城市餐饮业建筑功能规划、餐饮业厨房建筑设施建设相关的环保问题及全民参与环境保护等方面提出具体的解决对策。 相似文献
4.
Improvements on Flood Alleviation in Germany: Lessons Learned from the Elbe Flood in August 2002 总被引:1,自引:0,他引:1
The increase in damage due to natural disasters is directly related to the number of people who live and work in hazardous
areas and continuously accumulate assets. Therefore, land use planning authorities have to manage effectively the establishment
and development of settlements in flood-prone areas in order to avoid the further increase of vulnerable assets. Germany faced
major destruction during the flood in August 2002 in the Elbe and Danube catchments, and many changes have been suggested
in the existing German water and planning regulations. This article presents some findings of a “Lessons Learned” study that
was carried out in the aftermath of the flood and discusses the following topics: 1) the establishment of comprehensive hazard
maps and flood protection concepts, 2) the harmonization of regulations of flood protection at the federal level, 3) the communication
of the flood hazard and awareness strategies, and 4) how damage potential can be minimized through measures of area precaution
such as resettlement and risk-adapted land use. Although attempts towards a coordinated and harmonized creation of flood hazard
maps and concepts have been made, there is still no uniform strategy at all planning levels and for all states (Lae
nder) of the Federal Republic of Germany. The development and communication of possible mitigation strategies for “unthinkable
extreme events” beyond the common safety level of a 100-year flood are needed. In order to establish a sustainable and integrated
flood risk management, interdisciplinary and catchment-based approaches are needed. 相似文献
5.
罗立昱 《中国环境管理干部学院学报》2012,22(3):39-41,45
臭氧层损耗是重要的全球环境问题之一。最早认识到臭氧层危害的美国率先在国内立法控制相关物质,然而另一大经济体——欧共体,在这一方面却行动迟缓。在保护臭氧层的国际谈判中,美欧之间相互妥协,最终达成了对氟氯烃化合物(CFCs)进行限控的《蒙特利尔议定书》。美欧之间的分歧来自国内化工业巨头的影响,国际经济变动影响外交决策。国际环境问题背后隐藏的经济关系与大国的领导作用是影响国际环境合作的主要因素。 相似文献
6.
ADENA R. RISSMAN†† LYNN LOZIER† TOSHA COMENDANT‡ PETER KAREIVA§ JOSEPH M. KIESECKER M. REBECCA SHAW† ADINA M. MERENLENDER 《Conservation biology》2007,21(3):709-718
Abstract: Conservation easements are one of the primary tools for conserving biodiversity on private land. Despite their increasing use, little quantitative data are available on what species and habitats conservation easements aim to protect, how much structural development they allow, or what types of land use they commonly permit. To address these knowledge gaps, we surveyed staff responsible for 119 conservation easements established by the largest nonprofit easement holder, The Nature Conservancy, between 1985 and 2004. Most easements (80%) aimed to provide core habitat to protect species or communities on-site, and nearly all were designed to reduce development. Conservation easements also allowed for a wide range of private uses, which may result in additional fragmentation and habitat disturbance. Some residential or commercial use, new structures, or subdivision of the property were permitted on 85% of sampled conservation easements. Over half (56%) allowed some additional buildings, of which 60% restricted structure size or building area. Working landscape easements with ranching, forestry, or farming made up nearly half (46%) of the easement properties sampled and were more likely than easements without these uses to be designated as buffers to enhance biodiversity in the surrounding area. Our results demonstrate the need for clear restrictions on building and subdivision in easements, research on the compatibility of private uses on easement land, and greater public understanding of the trade-offs implicit in the use of conservation easements for biodiversity conservation. 相似文献
7.
环保是我国在发展中较为重视的一个工作内容,为了能够顺利地做好城市环保工作,在2016年提出了"环保管家"这个环保概念,通过这个理念推动环保服务业的发展。但是由于该理念提出的时间尚短,所以在实施阶段出现了较多的阻力,导致环保管家并没能实现方案提出的预想效果。鉴于环保管家对工业园区工作的重要性,本文将分析环保管家在工业园区开展的意义以及途径,希望能对相关从业人员的工作有所启发。 相似文献
8.
9.
Javid Manzoor Mamta Rayavarapu Jaganadha Rao 《International journal of occupational safety and ergonomics》2016,22(4):473-478
Aim. The aim of the present study was to identify and evaluate predominant noise sources in the cricket bat industry of Kashmir, India. Methods. Sound levels were measured at operator’s ear level in the working zone of the workers of seven cricket bat factories. The impact assessment was made through personal interviews with each worker separately during their period of rest. Results. On average, 62.5% of the workers reported difficulty in hearing and 24.1% of the workers have become patients for hypertension. Only 58.1% of the workers complained of headache due to high noise level. Conclusions. The workers engaged in the cricket bat industry of Kashmir are exposed to high noise levels. It is suggested that personal protective equipment like ear plugs and ear muffs be used by these workers as a protection against this hazard. 相似文献
10.
从阐述我国劳动安全卫生教育面临的一个重要方面的问题入手,提出劳动安全卫生教育必须由企业推向社会。还探讨了劳动安全卫生教育推向社会的意义、作用以及具体方法。 相似文献