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   4655篇
  免费   230篇
  国内免费   1528篇
安全科学   331篇
废物处理   253篇
环保管理   383篇
综合类   2677篇
基础理论   759篇
污染及防治   1461篇
评价与监测   194篇
社会与环境   164篇
灾害及防治   191篇
  2024年   9篇
  2023年   80篇
  2022年   245篇
  2021年   202篇
  2020年   155篇
  2019年   127篇
  2018年   166篇
  2017年   205篇
  2016年   205篇
  2015年   230篇
  2014年   397篇
  2013年   448篇
  2012年   414篇
  2011年   430篇
  2010年   341篇
  2009年   337篇
  2008年   381篇
  2007年   321篇
  2006年   273篇
  2005年   177篇
  2004年   141篇
  2003年   142篇
  2002年   125篇
  2001年   129篇
  2000年   104篇
  1999年   100篇
  1998年   102篇
  1997年   84篇
  1996年   74篇
  1995年   59篇
  1994年   36篇
  1993年   44篇
  1992年   36篇
  1991年   21篇
  1990年   14篇
  1989年   15篇
  1988年   10篇
  1987年   11篇
  1986年   5篇
  1985年   2篇
  1984年   4篇
  1983年   3篇
  1982年   2篇
  1981年   3篇
  1977年   2篇
  1971年   1篇
  1970年   1篇
排序方式: 共有6413条查询结果,搜索用时 203 毫秒
991.
Environmental Science and Pollution Research - Agricultural materials input (fertilizer and pesticide, etc.), together with straw burning, rice planting, and livestock breeding, constitute the...  相似文献   
992.
Liu  Jiutan  Ma  Yuanyuan  Gao  Zongjun  Zhang  Yuqi  Sun  Zengbing  Sun  Tianzhu  Fan  Haibin  Wu  Bin  Li  Mingbo  Qian  Lili 《Environmental science and pollution research international》2022,29(23):34302-34313
Environmental Science and Pollution Research - The present study, with the aid of GIS, utilizes high-density groundwater (GW) sampling data (1398 samples) to analyze the spatial variation...  相似文献   
993.

Investors and other stakeholders are starting to pay attention to firms’ carbon emissions and carbon disclosure. This study investigated the effects of voluntary carbon disclosure information and carbon emissions on firm value from listed companies in the Shanghai and Shenzhen 300 (CSI 300) Index. We also apply the Probit model to predict the probability of voluntary carbon disclosure information. The results indicate that the increase in carbon emissions has a negative impact on firm value. The action that companies select to disclose carbon emissions has a positive impact on firm value. The effect of leverage ratio on VCDI is increasing year by year. What is more, the probability of the average size firm carbon disclosure was 30.73% in 2020. Company management needs to pay attention to the risks caused by carbon emissions and ensure the quality of carbon disclosure information, especially the authenticity and reliability of the information.

  相似文献   
994.
Environmental Science and Pollution Research - Many advanced technologies have shown encouraging results in removing antibiotics from domestic wastewater. However, as activated sludge treatment is...  相似文献   
995.
Environmental Science and Pollution Research - The present study sought to determine the effects of multi-walled carbon nanotubes (MWCNTs) concentrations (0–10 mg L?1) on tetracycline...  相似文献   
996.
Environmental Science and Pollution Research - Air pollution is one of the biggest environmental health problems in the world; accumulative studies have shown that air pollution was closely related...  相似文献   
997.

Environmental sustainability is the foundation and of great significance for the sustainable development of urban agglomerations. Taking the Beijing-Tianjin-Hebei urban agglomeration as an example, we developed a method to effectively assess long-term regional environmental sustainability based on the Google Earth Engine (GEE) platform. We used the GEE to obtain 5206 Landsat remote sensing images in the region from 1983 to 2016 and developed the comprehensive environmental index (CEI) to assess regional environmental sustainability based on the theme-oriented framework proposed by the United Nations Commission on Sustainable Development. We found that the environmental sustainability of the urban agglomeration showed a trend of first rising, then falling, and then rising again in the past 30 years. The average CEI increased from 0.621 to 0.631 from 1985 to 1990, dropped to the lowest value of 0.618 in 2000, and then rose to the highest value of 0.672 in 2015. In particular, the extent of areas in which environmental sustainability improved (56% of the region) was greater than the extent of areas in which environmental deterioration occurred. The environmental sustainability of Hengshui, Xingtai, and Cangzhou in the southeast of the region has been significantly improved. The method proposed in this study provides an automatic, rapid, and extensible way to assess regional environmental sustainability and provides a scientific reference for improving the sustainability of the regional environment.

  相似文献   
998.
Environmental Science and Pollution Research - As persistent and ubiquitous contaminants in water, iodinated X-ray contrast media (ICM) pose a non-negligible risk to the environment and human...  相似文献   
999.
Environmental Science and Pollution Research - Phoxim is one of the main organophosphorus pesticides used in agricultural production. However, little information is known about how it affects the...  相似文献   
1000.
Environmental Science and Pollution Research - Nitrogen fertilizer has considerable effects on soil carbon fluxes. However, the responses of soil CO2 emission to N fertilizer remain controversial....  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