全文获取类型
收费全文 | 25278篇 |
免费 | 213篇 |
国内免费 | 268篇 |
专业分类
安全科学 | 652篇 |
废物处理 | 1271篇 |
环保管理 | 2925篇 |
综合类 | 3367篇 |
基础理论 | 6664篇 |
环境理论 | 5篇 |
污染及防治 | 6886篇 |
评价与监测 | 2063篇 |
社会与环境 | 1787篇 |
灾害及防治 | 139篇 |
出版年
2023年 | 135篇 |
2022年 | 318篇 |
2021年 | 330篇 |
2020年 | 194篇 |
2019年 | 235篇 |
2018年 | 534篇 |
2017年 | 527篇 |
2016年 | 824篇 |
2015年 | 492篇 |
2014年 | 726篇 |
2013年 | 1999篇 |
2012年 | 1187篇 |
2011年 | 1228篇 |
2010年 | 934篇 |
2009年 | 912篇 |
2008年 | 1058篇 |
2007年 | 1144篇 |
2006年 | 1045篇 |
2005年 | 1167篇 |
2004年 | 1274篇 |
2003年 | 1131篇 |
2002年 | 754篇 |
2001年 | 972篇 |
2000年 | 645篇 |
1999年 | 424篇 |
1998年 | 284篇 |
1997年 | 256篇 |
1996年 | 296篇 |
1995年 | 286篇 |
1994年 | 260篇 |
1993年 | 235篇 |
1992年 | 245篇 |
1991年 | 219篇 |
1990年 | 222篇 |
1989年 | 224篇 |
1988年 | 202篇 |
1987年 | 160篇 |
1986年 | 129篇 |
1985年 | 143篇 |
1984年 | 171篇 |
1983年 | 155篇 |
1982年 | 193篇 |
1981年 | 136篇 |
1980年 | 119篇 |
1979年 | 154篇 |
1978年 | 119篇 |
1977年 | 107篇 |
1976年 | 100篇 |
1975年 | 86篇 |
1974年 | 91篇 |
排序方式: 共有10000条查询结果,搜索用时 62 毫秒
1.
Tabriz S. S. Kader M. A. Rokonuzzaman M. Hossen M. S. Awal M. A. 《Environment, Development and Sustainability》2021,23(11):15667-15694
Environment, Development and Sustainability - Sugarcane is an industrial crop globally used for producing biofuels and bioproducts and is the only source of white sugar in Bangladesh. However,... 相似文献
2.
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
3.
Shaaban Nashwa A. El-Rayis Osman A. Aboeleneen Marwa S. 《Environmental science and pollution research international》2021,28(16):19742-19754
Environmental Science and Pollution Research - Lake Mariut Main Basin (MB) is not only one of the three basins composing Lake Mariut (LM) but is also the main source of the popular tilapia fish to... 相似文献
4.
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
5.
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
6.
This study investigated the water quality variation spanning 30 years (1986–2017) in 16 catchments of Hong Kong against different urbanization indices, namely, built area fraction; population; and product of population and built area fraction. Pearson correlations of three different periods of time (1988–1990, 1998–2000, and 2015–2017) indicated that water quality trends were dependent on the urbanization index. Total solids, nitrite-nitrogen, total phosphorus, electrical conductivity, dissolved oxygen, and flow rate had significant deteriorative trends (Pearson r > 0.5 and p < 0.05) with population and product of built area and population. Results also interpreted that built area fraction and product of built area and population were the worst and best indices that represented urbanization and/or its impacts, respectively. Mann-Kendall test for the entire 30 year period showed that water quality had improved with time with respect to certain water quality parameters (e.g., dissolved oxygen, ammoniacal nitrogen and total suspended solids). The results portrayed that although the urbanization of catchments had increased with time, the river water quality with respect to many parameters showed signs of improvement and the legislative measures implemented seemed to be effective in controlling pollution. 相似文献
7.
Fedorov N. I. Martynenko V. B. Zhigunova S. N. Mikhailenko O. I. Shendel’ G. V. Naumova L. G. 《Russian Journal of Ecology》2021,52(2):118-125
Russian Journal of Ecology - Changes in the distribution of broadleaf tree species—Tilia cordata Mill., Quercus robur L., Acer platanoides L., and Ulmus glabra Huds.—in the central part... 相似文献
8.
Tominaga Flávio Kiyoshi Silva Thalita Tieko Boiani Nathalia Fonseca de Jesus Juliana Mendonça Silva Teixeira Antonio Carlos Silva Costa Borrely Sueli Ivone 《Environmental science and pollution research international》2021,28(19):23975-23983
Environmental Science and Pollution Research - Wastewater and effluent discharges are the main causes of receiving water body pollution and important challenges in water quality management. Among... 相似文献
9.
Merçon Julia Silva Cabral Dandara Chisté Teixeira Bárbara Miura Pereira Tatiana Magalhães Bona Alliny Valadares Locateli Armini Catharina do Nascimento Agostinho Silvia Gabriela Carvalho Gomes Levy 《Environmental science and pollution research international》2021,28(47):66643-66655
Environmental Science and Pollution Research - The Fundão Dam collapsed, on November 5th, 2015, dumping more than 50 million/m3 of iron ore tailings, enriched with metals, into the Doce River... 相似文献
10.
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