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   25216篇
  免费   1581篇
  国内免费   8550篇
安全科学   2042篇
废物处理   1369篇
环保管理   1998篇
综合类   15032篇
基础理论   4088篇
环境理论   3篇
污染及防治   7291篇
评价与监测   1185篇
社会与环境   1289篇
灾害及防治   1050篇
  2024年   49篇
  2023年   446篇
  2022年   1281篇
  2021年   1169篇
  2020年   1091篇
  2019年   924篇
  2018年   1043篇
  2017年   1212篇
  2016年   1209篇
  2015年   1494篇
  2014年   1836篇
  2013年   2528篇
  2012年   2149篇
  2011年   2217篇
  2010年   1704篇
  2009年   1637篇
  2008年   1715篇
  2007年   1515篇
  2006年   1414篇
  2005年   1013篇
  2004年   745篇
  2003年   868篇
  2002年   813篇
  2001年   684篇
  2000年   683篇
  1999年   666篇
  1998年   571篇
  1997年   483篇
  1996年   455篇
  1995年   381篇
  1994年   309篇
  1993年   269篇
  1992年   219篇
  1991年   130篇
  1990年   96篇
  1989年   69篇
  1988年   66篇
  1987年   36篇
  1986年   30篇
  1985年   15篇
  1984年   20篇
  1983年   20篇
  1982年   20篇
  1981年   16篇
  1978年   9篇
  1977年   3篇
  1975年   5篇
  1974年   3篇
  1972年   4篇
  1971年   3篇
排序方式: 共有10000条查询结果,搜索用时 968 毫秒
981.
Environmental Science and Pollution Research - This paper presents a quantitative pollutant discharge model for a typical molybdenum roasting plant, which combines the best available technology and...  相似文献   
982.
Environmental Science and Pollution Research - The aim of this study was to analyze dispersion behavior characteristics and pollution hazard risk after a release of liquid chlorine. A full-scale...  相似文献   
983.
Environmental Science and Pollution Research - Globally, climate change is an alarming threat to the livestock industry. Such changes in the climate can also adversely affect the returns of...  相似文献   
984.
Environmental Science and Pollution Research - Nitrogen-doped carbon nanotubes (N-CNTs) were synthesized via a hydrothermal method and further modified with magnetic Co0.5Cu0.5Fe2O4 nanoparticles...  相似文献   
985.
Environmental Science and Pollution Research - It is of great significance for the coordinated development of the environment and the economy to study the impact of the human driving factors of...  相似文献   
986.
987.
Environmental Science and Pollution Research - Coastal ecosystem is vulnerable to heavy metal contamination. The northern Hangzhou Bay is under intensifying impact of anthropogenic activities. To...  相似文献   
988.
Environmental Science and Pollution Research - The livestock manure nitrogen load on farmland (LMNLF) is often used to assess the potential environmental pollution risk of livestock manure nitrogen...  相似文献   
989.

Characterization of the typical petroleum pollutants, polycyclic aromatic hydrocarbons (PAHs) and n-alkanes, and indigenous microbial community structure and function in historically contaminated soil at petrol stations is critical. Five soil samples were collected from a petrol station in Beijing, China. The concentrations of 16 PAHs and 31 n-alkanes were measured by gas chromatography-mass spectrometry. The total concentrations of PAHs and n-alkanes ranged from 973 ± 55 to 2667 ± 183 μg/kg and 6.40 ± 0.38 to 8.65 ± 0.59 mg/kg (dry weight), respectively, which increased with depth. According to the observed molecular indices, PAHs and n-alkanes originated mostly from petroleum-related sources. The levels of ΣPAHs and the total toxic benzo[a]pyrene equivalent (ranging from 6.41 to 72.54 μg/kg) might exert adverse biological effects. Shotgun metagenomic sequencing was employed to investigate the indigenous microbial community structure and function. The results revealed that Proteobacteria and Actinobacteria were the most abundant phyla, and Nocardioides and Microbacterium were the important genera. Based on COG and KEGG annotations, the highly abundant functional classes were identified, and these functions were involved in allowing microorganisms to adapt to the pressure from contaminants. Five petroleum hydrocarbon degradation-related genes were annotated, revealing the distribution of degrading microorganisms. This work facilitates the understanding of the composition, source, and potential ecological impacts of residual PAHs and n-alkanes in historically contaminated soil.

  相似文献   
990.
Environmental Science and Pollution Research - Inland freshwater lakes have been widely considered as significant sources of CO2 to the atmosphere. However, long-term measurements of CO2 dynamics...  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