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   87874篇
  免费   1469篇
  国内免费   2079篇
安全科学   3829篇
废物处理   3192篇
环保管理   13461篇
综合类   22622篇
基础理论   25935篇
环境理论   73篇
污染及防治   13026篇
评价与监测   5273篇
社会与环境   3403篇
灾害及防治   608篇
  2022年   872篇
  2021年   930篇
  2020年   793篇
  2019年   990篇
  2018年   1174篇
  2017年   1205篇
  2016年   2234篇
  2015年   1997篇
  2014年   2781篇
  2013年   9495篇
  2012年   2214篇
  2011年   2266篇
  2010年   3355篇
  2009年   3466篇
  2008年   1710篇
  2007年   1524篇
  2006年   2021篇
  2005年   2052篇
  2004年   2369篇
  2003年   2207篇
  2002年   1743篇
  2001年   2046篇
  2000年   1908篇
  1999年   1483篇
  1998年   1369篇
  1997年   1331篇
  1996年   1448篇
  1995年   1572篇
  1994年   1463篇
  1993年   1309篇
  1992年   1283篇
  1991年   1271篇
  1990年   1205篇
  1989年   1176篇
  1988年   1010篇
  1987年   952篇
  1986年   982篇
  1985年   1049篇
  1984年   1141篇
  1983年   1161篇
  1982年   1170篇
  1981年   1088篇
  1980年   933篇
  1979年   909篇
  1978年   815篇
  1977年   706篇
  1976年   632篇
  1975年   590篇
  1973年   613篇
  1972年   619篇
排序方式: 共有10000条查询结果,搜索用时 31 毫秒
1.
Environment, Development and Sustainability - The current study explores the role of green trust, green perceived risk and green perceived quality in changing green purchase intention....  相似文献   
2.
Russian Journal of Ecology - The dynamics of the species richness, breeding density, and structure of the community of birds occupying nest-boxes upon a 50-fold reduction of atmospheric emissions...  相似文献   
3.
Russian Journal of Ecology - A study of the anthropogenic impacts on the on-shore aggregation of true seals was carried out at a haul-out located at the mouth of Piltun Bay (the northeastern part...  相似文献   
4.
Environmental Science and Pollution Research - Legacy (i.e., polybrominated diphenyl ethers (PBDEs) and hexabromocyclododecane (HBCDD)) and alternative halogenated flame retardants (HFRs) were...  相似文献   
5.

The continuous increase in waste generation warrants global management of waste to reduce the adverse economic, social, and environmental impact of waste while achieving goals for sustainability. The complexity of waste management systems due to different waste management practices renders such systems difficult to analyze. System dynamics (SD) approach aids in conceptualizing and analyzing the structure, interactions, and mode of behavior of the complex systems. The impact of the underlying components can therefore be assessed in an integrated way while the impact of possible policies on the system can be studied to implement appropriate decisions. This review summarizes various applications of SD pertinent to the waste management practices in different countries. Practices may include waste generation, reduction, reuse/recovery, recycling, and disposal. Each study supports regional-demanding targets in environmental, social, and economic scopes such as expanding landfill life span, implementing proper disposal fee, global warming mitigation, energy generation/saving, etc. The interacting variables in the WMS are specifically determined based on the defined problem, ultimate goal, and the type of waste. Generally, population and gross domestic product can increase the waste generation. An increase in waste reduction, source separation, and recycling rate could decrease the environmental impact, but it is not necessarily profitable from an economic perspective. Incentives to separate waste and knowledge about waste management are variables that always have a positive impact on the entire system.

  相似文献   
6.
Environmental Science and Pollution Research - A current environmental problem is the uncontrolled use of various pesticides that are harmful to the environment and public health. The herbicide...  相似文献   
7.
Russian Journal of Ecology - Climate change entails shifts in the ranges of woody plants along both latitudinal and altitudinal gradients in the boreal forest biome. In this study,...  相似文献   
8.
This article postulates strong endogenous relationships in lower income countries between institutional quality, financial development and sustained economic growth. These associations were investigated using the vector-error correction model (VECM) and Granger causality method for a sample of 79 countries from 2005 to 2022. The findings show that (1) these variables reinforce each other in the short run. (2) In the long run, both institutional quality and financial development can fuel economic growth. (3) The positive effect of institutional quality on economic growth is greater than that of financial development. Policy implications of these findings are that careful attention should be paid to co-development policies to enhance the institutional quality and the financial system in these economies. Policies should also consider economic growth strategies to enable sustainable economic growth rates.  相似文献   
9.
Russian Journal of Ecology - In this paper, Ellenberg’s indicator values were estimated in order to soil nitrogen (N), pH (R) and soil moisture (M) in different subalpine grassland...  相似文献   
10.
Environmental Science and Pollution Research - Nutrient source and transport study in tropical creeks adjacent to megacities are sparse on a regional and global scale. High-frequency chemical data...  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