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   32643篇
  免费   353篇
  国内免费   235篇
安全科学   864篇
废物处理   1264篇
环保管理   4232篇
综合类   5175篇
基础理论   9150篇
环境理论   25篇
污染及防治   8843篇
评价与监测   2051篇
社会与环境   1428篇
灾害及防治   199篇
  2022年   298篇
  2021年   289篇
  2020年   200篇
  2019年   259篇
  2018年   518篇
  2017年   473篇
  2016年   725篇
  2015年   572篇
  2014年   864篇
  2013年   2450篇
  2012年   1054篇
  2011年   1454篇
  2010年   1166篇
  2009年   1153篇
  2008年   1429篇
  2007年   1499篇
  2006年   1332篇
  2005年   1101篇
  2004年   1089篇
  2003年   1021篇
  2002年   996篇
  2001年   1271篇
  2000年   882篇
  1999年   571篇
  1998年   431篇
  1997年   438篇
  1996年   450篇
  1995年   500篇
  1994年   449篇
  1993年   405篇
  1992年   418篇
  1991年   378篇
  1990年   381篇
  1989年   416篇
  1988年   348篇
  1987年   303篇
  1986年   278篇
  1985年   309篇
  1984年   286篇
  1983年   322篇
  1982年   325篇
  1981年   272篇
  1980年   244篇
  1979年   271篇
  1978年   230篇
  1977年   196篇
  1976年   201篇
  1975年   195篇
  1973年   172篇
  1972年   199篇
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
891.
Environmental Science and Pollution Research - In this work, the activated persulfate oxidation of ciprofloxacin (CIP) using a low-grade titanium ore under sunlight or simulated sunlight were...  相似文献   
892.
Environmental Science and Pollution Research - Banana is one of the most important agricultural products of Ecuador. It relies on intensive monoculture cropping systems with a large volume of...  相似文献   
893.
Environmental Science and Pollution Research - This paper presents the synthesis of a hybrid material through the use of natural pozzolan and titanium(IV) isopropoxide using the sol-gel method and...  相似文献   
894.
Environmental Science and Pollution Research - Nowadays, the use of different nanoscale structures has been introduced to a large number of research areas. One of these is the treatment and...  相似文献   
895.
Environmental Science and Pollution Research - The photo-Fenton process was performed with four radiation settings to treat clinical analysis laboratory wastewater (CALWW) from a hospital, with the...  相似文献   
896.
Environmental Science and Pollution Research - Graphene oxide (GO) has a multitude of applications in areas of nanomedicine, electronics, textile, water purification, and catalysis among others. GO...  相似文献   
897.
Environmental Science and Pollution Research - Environmental arsenic exposure in adults and children has been associated with a reduction in the expression of club cell secretory protein (CC16) and...  相似文献   
898.
The COVID-19 pandemic has exposed an interconnected and tightly coupled globalized world in rapid change. This article sets the scientific stage for understanding and responding to such change for global sustainability and resilient societies. We provide a systemic overview of the current situation where people and nature are dynamically intertwined and embedded in the biosphere, placing shocks and extreme events as part of this dynamic; humanity has become the major force in shaping the future of the Earth system as a whole; and the scale and pace of the human dimension have caused climate change, rapid loss of biodiversity, growing inequalities, and loss of resilience to deal with uncertainty and surprise. Taken together, human actions are challenging the biosphere foundation for a prosperous development of civilizations. The Anthropocene reality—of rising system-wide turbulence—calls for transformative change towards sustainable futures. Emerging technologies, social innovations, broader shifts in cultural repertoires, as well as a diverse portfolio of active stewardship of human actions in support of a resilient biosphere are highlighted as essential parts of such transformations.  相似文献   
899.
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   
900.
Environmental Science and Pollution Research - This work describes the production/characterization of low molar mass chitosan nanoparticles derived from waste shrimp shells (SSC), as well as from a...  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