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   33921篇
  免费   360篇
  国内免费   474篇
安全科学   1047篇
废物处理   1631篇
环保管理   3989篇
综合类   5604篇
基础理论   8835篇
环境理论   19篇
污染及防治   8875篇
评价与监测   2307篇
社会与环境   2246篇
灾害及防治   202篇
  2023年   160篇
  2022年   367篇
  2021年   355篇
  2020年   251篇
  2019年   303篇
  2018年   522篇
  2017年   534篇
  2016年   810篇
  2015年   610篇
  2014年   968篇
  2013年   2698篇
  2012年   1168篇
  2011年   1590篇
  2010年   1299篇
  2009年   1329篇
  2008年   1594篇
  2007年   1626篇
  2006年   1416篇
  2005年   1216篇
  2004年   1106篇
  2003年   1214篇
  2002年   1058篇
  2001年   1395篇
  2000年   959篇
  1999年   582篇
  1998年   371篇
  1997年   399篇
  1996年   385篇
  1995年   465篇
  1994年   485篇
  1993年   395篇
  1992年   406篇
  1991年   395篇
  1990年   438篇
  1989年   375篇
  1988年   333篇
  1987年   312篇
  1986年   270篇
  1985年   285篇
  1984年   296篇
  1983年   290篇
  1982年   281篇
  1981年   242篇
  1980年   197篇
  1979年   215篇
  1978年   198篇
  1975年   155篇
  1974年   143篇
  1972年   151篇
  1971年   142篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
991.
Environmental Science and Pollution Research - The scientific knowledge produced by academic research can be valued in all sectors of human activity, including private sector. The ROVALTAIN...  相似文献   
992.
Environmental Science and Pollution Research - The process TiO2/PAC/UV-vis has been under study and compared with the isolated treatments of adsorption and photocatalysis determining possible...  相似文献   
993.
Environmental Science and Pollution Research - Acrylamide (AA) is a hazardous chemical that is widely used in industrial practices. Spirulina platensis (SP) is a blue green alga that is rich in...  相似文献   
994.
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   
995.
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   
996.
Environmental Science and Pollution Research - Trophic status in surface waters has been mostly monitored by measuring soluble reactive phosphorus (SRP) and total phosphorus (TP). Additional to...  相似文献   
997.
Environmental Science and Pollution Research - Persistent organic pollutants (POPs) are still globally distributed and can exert different effects on ecosystems. Little is known about the...  相似文献   
998.
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   
999.
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   
1000.
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   
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