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   17182篇
  免费   1001篇
  国内免费   6018篇
安全科学   1407篇
废物处理   1073篇
环保管理   1446篇
综合类   10238篇
基础理论   2628篇
污染及防治   5227篇
评价与监测   811篇
社会与环境   649篇
灾害及防治   722篇
  2024年   33篇
  2023年   289篇
  2022年   862篇
  2021年   806篇
  2020年   652篇
  2019年   552篇
  2018年   692篇
  2017年   791篇
  2016年   752篇
  2015年   973篇
  2014年   1395篇
  2013年   1754篇
  2012年   1466篇
  2011年   1531篇
  2010年   1263篇
  2009年   1226篇
  2008年   1308篇
  2007年   1095篇
  2006年   1085篇
  2005年   708篇
  2004年   516篇
  2003年   574篇
  2002年   530篇
  2001年   394篇
  2000年   476篇
  1999年   421篇
  1998年   340篇
  1997年   356篇
  1996年   317篇
  1995年   248篇
  1994年   187篇
  1993年   151篇
  1992年   146篇
  1991年   78篇
  1990年   74篇
  1989年   30篇
  1988年   31篇
  1987年   22篇
  1986年   17篇
  1985年   10篇
  1984年   7篇
  1983年   9篇
  1982年   14篇
  1981年   8篇
  1974年   1篇
  1973年   5篇
  1972年   1篇
  1971年   1篇
  1969年   1篇
  1958年   1篇
排序方式: 共有10000条查询结果,搜索用时 468 毫秒
601.
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   
602.
Environmental Science and Pollution Research - Considering the bargaining power of enterprises, this paper distinguishes between “Offering Bribes Voluntarily” (OBV) and “Offering...  相似文献   
603.
Collaborative monitoring over broad scales and levels of ecological organization can inform conservation efforts necessary to address the contemporary biodiversity crisis. An important challenge to collaborative monitoring is motivating local engagement with enough buy-in from stakeholders while providing adequate top-down direction for scientific rigor, quality control, and coordination. Collaborative monitoring must reconcile this inherent tension between top-down control and bottom-up engagement. Highly mobile and cryptic taxa, such as bats, present a particularly acute challenge. Given their scale of movement, complex life histories, and rapidly expanding threats, understanding population trends of bats requires coordinated broad-scale collaborative monitoring. The North American Bat Monitoring Program (NABat) reconciles top-down, bottom-up tension with a hierarchical master sample survey design, integrated data analysis, dynamic data curation, regional monitoring hubs, and knowledge delivery through web-based infrastructure. NABat supports collaborative monitoring across spatial and organizational scales and the full annual lifecycle of bats.  相似文献   
604.

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   
605.
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   
606.
Environmental Science and Pollution Research - Owing to the rising concerns about environmental degradation worldwide, firms in several developed and developing countries are pursuing carbon...  相似文献   
607.
Environmental Science and Pollution Research - The pollution of heavy metals (HMs) in the soil has become one of the important factors affecting the national environment and human health....  相似文献   
608.
Environmental Science and Pollution Research - Cypermethrin (CYP) is a toxic manmade chemical compound belonging to pyrethroid insecticides contaminating the environment. Plantago major (PM) has...  相似文献   
609.
Environmental Science and Pollution Research - This paper reports the synthesis of nitrogen-doped reduced graphene oxide (N-rGO)/zinc oxide (ZnO) composite photocatalysts by one-step hydrothermal...  相似文献   
610.
Environmental Science and Pollution Research - Caffeine is considered the most representative pharmaceutical emerging contaminant (PEC) because of its ubiquity, high environmental abundance,...  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