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   32911篇
  免费   388篇
  国内免费   243篇
安全科学   984篇
废物处理   1610篇
环保管理   4066篇
综合类   5585篇
基础理论   8488篇
环境理论   14篇
污染及防治   8098篇
评价与监测   2328篇
社会与环境   2173篇
灾害及防治   196篇
  2023年   159篇
  2022年   300篇
  2021年   354篇
  2020年   220篇
  2019年   274篇
  2018年   496篇
  2017年   510篇
  2016年   787篇
  2015年   595篇
  2014年   943篇
  2013年   2638篇
  2012年   1129篇
  2011年   1447篇
  2010年   1210篇
  2009年   1261篇
  2008年   1533篇
  2007年   1483篇
  2006年   1319篇
  2005年   1169篇
  2004年   1119篇
  2003年   1090篇
  2002年   1014篇
  2001年   1162篇
  2000年   827篇
  1999年   538篇
  1998年   414篇
  1997年   416篇
  1996年   420篇
  1995年   511篇
  1994年   440篇
  1993年   371篇
  1992年   402篇
  1991年   385篇
  1990年   363篇
  1989年   353篇
  1988年   321篇
  1987年   259篇
  1986年   267篇
  1985年   282篇
  1984年   284篇
  1983年   267篇
  1982年   292篇
  1981年   239篇
  1980年   189篇
  1979年   213篇
  1978年   186篇
  1977年   162篇
  1973年   193篇
  1972年   160篇
  1967年   164篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Environmental Science and Pollution Research - Arsenic (As) concentrations and deposition fluxes were measured in snow and rime at 10 mountain-top sites near the borders between the Czech Republic...  相似文献   
2.
3.
The provision of ecosystem services is a prominent rationale for urban greening, and there is a prevailing mantra that ‘trees are good’. However, understanding how urban trees contribute to sustainability must also consider disservices. In this perspective article, we discuss recent research on ecosystem disservices of urban trees, including infrastructure conflicts, health and safety impacts, aesthetic issues, and environmentally detrimental consequences, as well as management costs related to ecological disturbances and risk management. We also discuss tradeoffs regarding species selection and local conservation concerns, as well as the central role of human perception in the interpretation of ecosystem services and disservices, particularly the uncritical assertion that ‘everybody loves trees’. Urban forestry decision-making that fails to account for disservices can have unintended negative consequences for communities. Further research is needed regarding life cycle assessments, stakeholder decision-making, return-on-investment, and framings of services and disservices in urban forestry.  相似文献   
4.
Environmental Science and Pollution Research - Harmful cyanobacterial blooms (HCB) have severe impacts on marine and freshwater systems worldwide. They cause oxygen depletion and produce potent...  相似文献   
5.
Russian Journal of Ecology - A new method for assessing the response of biota to climatic changes in the ecosystem has been tested. In the Central Forest Natural Biosphere Reserve, the average...  相似文献   
6.
Environment, Development and Sustainability - Sugarcane is an industrial crop globally used for producing biofuels and bioproducts and is the only source of white sugar in Bangladesh. However,...  相似文献   
7.
Environmental Science and Pollution Research - COVID-19 was first discovered in Wuhan, China in December 2019. It is one of the worst pandemics in human history. Recent studies reported that...  相似文献   
8.
The COVID-19 pandemic has exposed an interconnected and tightly coupled globalized world in rapid change. This article sets the scientific stage for understanding and responding to such change for global sustainability and resilient societies. We provide a systemic overview of the current situation where people and nature are dynamically intertwined and embedded in the biosphere, placing shocks and extreme events as part of this dynamic; humanity has become the major force in shaping the future of the Earth system as a whole; and the scale and pace of the human dimension have caused climate change, rapid loss of biodiversity, growing inequalities, and loss of resilience to deal with uncertainty and surprise. Taken together, human actions are challenging the biosphere foundation for a prosperous development of civilizations. The Anthropocene reality—of rising system-wide turbulence—calls for transformative change towards sustainable futures. Emerging technologies, social innovations, broader shifts in cultural repertoires, as well as a diverse portfolio of active stewardship of human actions in support of a resilient biosphere are highlighted as essential parts of such transformations.  相似文献   
9.
Environmental Science and Pollution Research - In this work, the activated persulfate oxidation of ciprofloxacin (CIP) using a low-grade titanium ore under sunlight or simulated sunlight were...  相似文献   
10.
Environment, Development and Sustainability - Globally, traditional knowledge is at stake, notwithstanding intentions recorded in international policy conventions. Egypt has accepted and ratified...  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