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   88925篇
  免费   1295篇
  国内免费   1038篇
安全科学   3502篇
废物处理   3350篇
环保管理   13945篇
综合类   18928篇
基础理论   26295篇
环境理论   74篇
污染及防治   15181篇
评价与监测   5530篇
社会与环境   3901篇
灾害及防治   552篇
  2022年   743篇
  2021年   806篇
  2020年   657篇
  2019年   857篇
  2018年   1081篇
  2017年   1206篇
  2016年   2209篇
  2015年   1799篇
  2014年   2587篇
  2013年   9261篇
  2012年   2227篇
  2011年   2516篇
  2010年   3316篇
  2009年   3413篇
  2008年   2057篇
  2007年   1951篇
  2006年   2344篇
  2005年   2310篇
  2004年   2618篇
  2003年   2468篇
  2002年   2037篇
  2001年   2413篇
  2000年   1990篇
  1999年   1486篇
  1998年   1350篇
  1997年   1326篇
  1996年   1465篇
  1995年   1580篇
  1994年   1483篇
  1993年   1326篇
  1992年   1334篇
  1991年   1298篇
  1990年   1248篇
  1989年   1218篇
  1988年   1057篇
  1987年   992篇
  1986年   995篇
  1985年   1060篇
  1984年   1159篇
  1983年   1169篇
  1982年   1177篇
  1981年   1095篇
  1980年   944篇
  1979年   928篇
  1978年   822篇
  1977年   717篇
  1976年   633篇
  1974年   600篇
  1973年   633篇
  1972年   629篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
1.
Environmental Science and Pollution Research - This work presents a bibliographic review of the literature regarding the simultaneous removal of contaminants of emerging concern (CECs) and...  相似文献   
2.
3.
Environmental Science and Pollution Research - The discovery of microRNAs (miRNAs) 20 years ago has advocated a new era of “small molecular genetics.” About 2000 miRNAs are present that...  相似文献   
4.
Environmental Science and Pollution Research - Marine and freshwater pollution caused by transport of invasive species in shipping ballast water is a major global problem and will increase in...  相似文献   
5.
Russian Journal of Ecology - In this paper, Ellenberg’s indicator values were estimated in order to soil nitrogen (N), pH (R) and soil moisture (M) in different subalpine grassland...  相似文献   
6.
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   
7.
Environmental Science and Pollution Research - Animal breeding for meat production based on swine, cattle, poultry, and aquaculture is an activity that generates several impacts on the environment,...  相似文献   
8.
Environmental Science and Pollution Research - We studied the removal of 61 emerging micropollutants, including illicit drugs, in a biofilter wastewater treatment plant located in the French Indies...  相似文献   
9.
Urban greening increases vegetation and can restore ecological functions to urban systems. It has ties to restoration ecology, which aims to return degraded land to diverse, functional ecosystems. Both practices can be applied to maximizing ecosystem services and habitat in vacant lots, which are abundant in post-industrial cities, including Chicago, Illinois (USA), where our study took place. We tested four methods for increasing native plant diversity in vacant lots, ranging from low input to resource-intensive: seed bombing, broadcast seeding, planting plugs, and gardening. After three growing seasons, we assessed the growth of eight target native species and all non-target species. We expected that intensive treatments would have more target species stems and flowers and fewer non-target species, but we found that less-intensive options often produce equal or better results. From this, we recommend broadcast seeding as a viable, low-cost method for improving habitat and biodiversity in vacant lots.Electronic supplementary materialThe online version of this article (10.1007/s13280-020-01383-z) contains supplementary material, which is available to authorized users.  相似文献   
10.
Environmental Science and Pollution Research - Traditional medicine (TM) also known as folk medicine consists of medical knowledge systems that were developed over generations in various countries...  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