全文获取类型
收费全文 | 44151篇 |
免费 | 467篇 |
国内免费 | 604篇 |
专业分类
安全科学 | 1336篇 |
废物处理 | 2079篇 |
环保管理 | 5442篇 |
综合类 | 6944篇 |
基础理论 | 11611篇 |
环境理论 | 24篇 |
污染及防治 | 11586篇 |
评价与监测 | 3213篇 |
社会与环境 | 2704篇 |
灾害及防治 | 283篇 |
出版年
2023年 | 195篇 |
2022年 | 435篇 |
2021年 | 466篇 |
2020年 | 338篇 |
2019年 | 401篇 |
2018年 | 702篇 |
2017年 | 716篇 |
2016年 | 1100篇 |
2015年 | 801篇 |
2014年 | 1238篇 |
2013年 | 3586篇 |
2012年 | 1503篇 |
2011年 | 2001篇 |
2010年 | 1686篇 |
2009年 | 1710篇 |
2008年 | 2015篇 |
2007年 | 2109篇 |
2006年 | 1844篇 |
2005年 | 1530篇 |
2004年 | 1470篇 |
2003年 | 1551篇 |
2002年 | 1398篇 |
2001年 | 1817篇 |
2000年 | 1263篇 |
1999年 | 778篇 |
1998年 | 549篇 |
1997年 | 540篇 |
1996年 | 552篇 |
1995年 | 608篇 |
1994年 | 613篇 |
1993年 | 513篇 |
1992年 | 520篇 |
1991年 | 494篇 |
1990年 | 531篇 |
1989年 | 490篇 |
1988年 | 442篇 |
1987年 | 395篇 |
1986年 | 319篇 |
1985年 | 348篇 |
1984年 | 389篇 |
1983年 | 373篇 |
1982年 | 387篇 |
1981年 | 326篇 |
1980年 | 272篇 |
1979年 | 309篇 |
1978年 | 271篇 |
1977年 | 206篇 |
1976年 | 192篇 |
1975年 | 200篇 |
1974年 | 187篇 |
排序方式: 共有10000条查询结果,搜索用时 390 毫秒
1.
Wasaya Allah Saleem Muhammad Abid Ahmad Jamil Nazam Muhammad Khan M. Mohsin Ali Ishfaq Mohammad 《Environment, Development and Sustainability》2021,23(9):13418-13435
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 - 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
3.
Galal Tarek M. Essa Basma Al-Yasi Hatim 《Environmental science and pollution research international》2021,28(28):37158-37171
Environmental Science and Pollution Research - Heavy metals are well known for their toxicity and become significant environmental pollution with a continually rising technology and public outcry... 相似文献
4.
Carvalho Laíse M. Soares-Filho Antônio F. Lima Maciel S. Cruz-Filho João F. Dantas Taisa C. M. Luz Geraldo E. 《Environmental science and pollution research international》2021,28(7):7774-7785
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
5.
Petrov I. A. Shushpanov A. S. Golyukov A. S. Dvinskaya M. L. Kharuk V. I. 《Russian Journal of Ecology》2021,52(5):399-405
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
6.
Rudra P. Pradhan Mahendhiran S. Nair Mak B. Arvin John H. Hall 《Natural resources forum》2023,47(3):435-483
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
7.
The Science of Nature - We present the first study that compares phenological variation in parasite load and inflammatory response in a lizard with asynchronous male and female gonadal cycles.... 相似文献
8.
9.
Safar Korai M. Bux Mahar R. Aslam Uqaili M. 《Journal of Material Cycles and Waste Management》2018,20(2):1239-1247
Journal of Material Cycles and Waste Management - Power generation from municipal solid waste plays significant role to mitigate the environmental pollution. The power generation potential of... 相似文献
10.
Rushdya R. A. Hassan Maisa M. A. Mansour 《Journal of Polymers and the Environment》2018,26(7):2698-2707
The current study is interested in evaluating the decay of cotton, Whatman and chemical pulp caused by Trichoderma harzianum and Paecilomyces variotii. The structural changes of the paper were evaluated by Infrared Spectroscopy (FTIR) and Scanning Electron Microscope (SEM). The SEM results show differences in hyphae colonization and paper decay patterns between studied species under the current study; P. variotii caused an eroded structure in the cotton (cavity forming), whereas the initial T. harzianum colonization produced rupture and erosion (soft-rot decay type II) for the three types of paper ,the gaps were elongated with sharp pointed ends, which consisted either of individual cavities or in chains. Moreover, FTIR results confirmed that there a relationship could be observed between fungal decay and crystalline cellulose content because the intensity of peaks at 1335 and 1111 cm?1 significantly decreased due to the fungal decay. Furthermore, the intensity of O–H stretching absorption slightly decreased, and this may be attributed to hydrolysis of cellulose molecules. 相似文献