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   19507篇
  免费   4723篇
  国内免费   28676篇
安全科学   1840篇
废物处理   908篇
环保管理   1719篇
综合类   33607篇
基础理论   3664篇
环境理论   2篇
污染及防治   8158篇
评价与监测   1824篇
社会与环境   478篇
灾害及防治   706篇
  2024年   14篇
  2023年   207篇
  2022年   616篇
  2021年   501篇
  2020年   976篇
  2019年   2152篇
  2018年   2371篇
  2017年   2518篇
  2016年   2340篇
  2015年   2846篇
  2014年   3478篇
  2013年   3805篇
  2012年   3552篇
  2011年   3145篇
  2010年   2770篇
  2009年   2804篇
  2008年   2553篇
  2007年   2387篇
  2006年   1850篇
  2005年   1388篇
  2004年   1192篇
  2003年   1066篇
  2002年   866篇
  2001年   856篇
  2000年   954篇
  1999年   845篇
  1998年   652篇
  1997年   636篇
  1996年   654篇
  1995年   561篇
  1994年   363篇
  1993年   302篇
  1992年   348篇
  1991年   309篇
  1990年   257篇
  1989年   206篇
  1988年   150篇
  1987年   75篇
  1986年   80篇
  1985年   56篇
  1984年   55篇
  1983年   43篇
  1982年   46篇
  1981年   35篇
  1979年   2篇
  1978年   3篇
  1976年   2篇
  1974年   2篇
  1972年   7篇
  1971年   6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 - The existing literature on the environmental Kuznets curve (EKC) fails to investigate the spatial attribute of the “pollution halo” effect...  相似文献   
2.
Environmental Science and Pollution Research - A mechanical harvesting technology based on coupling flocculation with a rotary drum filter (RDF, 35-μm) was applied to remove cyanobacterial...  相似文献   
3.
Environmental Science and Pollution Research - Growing environmental pressure urges China to develop in a sustainable and low carbon way, and thus China strives to achieve a carbon peak by 2030 and...  相似文献   
4.
Environmental Science and Pollution Research - The impact of high concentrations of air pollution on COVID-19 has been a major air quality and life safety issue in recent studies. This study aimed...  相似文献   
5.
Environmental Science and Pollution Research - Phosphorus is an essential macro-mineral nutrient for poultry, needed for the body growth, development of bones, genomic function, good...  相似文献   
6.
Tang  Zhi  Li  Yilian  Yang  Zhe  Liu  Danqing  Tang  Min  Yang  Sen  Tang  Ye 《Environmental science and pollution research international》2019,26(20):20277-20285
Environmental Science and Pollution Research - The sorption/desorption behaviors of benzene, toluene, ethylbenzene, and xylene (BTEX) on soil organic matter (SOM) have a significant influence on...  相似文献   
7.
Environmental Science and Pollution Research - A Correction to this paper has been published: https://doi.org/10.1007/s11356-021-15526-6  相似文献   
8.
M. Baumg  rtner  E. Bock  R. Conrad 《Chemosphere》1992,24(12):1943-1960
Atmospheric NO2 was taken up by samples of various soils and building stones. The NO2 uptake rate constants were highest in soil samples taken during the summer months. However, the NO2 uptake rate constants of the soils and building stones were not significantly correlated with any of the following variables: moisture, pH, ammonium, nitrite, or nitrate. NO2 uptake by soil and stone was not abolished by autoclaving indicating a chemical uptake process. NO2 uptake by acidic and air-dry soils and stones resulted in nearly stoichiometric reduction of NO2 to NO. This reduction was enhanced by the addition of ferrous iron and was further enhanced by incubation under 1 ppmv SO2. The results suggest that NO2 reduction may be coupled to oxidation of ferrous to ferric iron which may be reduced again by atmospheric SO2 thus regenerating the ferrous iron content of the soil or stone. Conversion of NO2 to NO was not observed in neutral or/and moist soils and stones. NO2 was also taken up by purified and sterilized quartz sand moistend with water. This uptake was enhanced by addition of humic material but not by addition of bacteria which both had been extracted from genuine soil. Under most conditions, only uptake but no release of NO2 was observed. However, NO2 was released in air-dry soils that were heated to 45–65°C, or in ammonium-fertilized soil or stone that was drying up at room temperature. Under the latter conditions mimicking field practice, the NO2 release reached rates that were similar to the NO release rates.  相似文献   
9.
针对某乡镇企业十分发达地区的跨行政(市县)区域水污染死鱼事故的剖析,本文提出了处理解决跨行政区域水污染纠纷事故的若干对策建议。  相似文献   
10.
各位理事、各位来宾、同志们、朋友们: 为期三天的中国安全防范产品行业协会第三届第三次理事(扩大)会议,完成了各项预定议程,顺利结束.  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