全文获取类型
收费全文 | 20295篇 |
免费 | 758篇 |
国内免费 | 7040篇 |
专业分类
安全科学 | 1462篇 |
废物处理 | 1293篇 |
环保管理 | 1675篇 |
综合类 | 10936篇 |
基础理论 | 3279篇 |
环境理论 | 8篇 |
污染及防治 | 7104篇 |
评价与监测 | 782篇 |
社会与环境 | 692篇 |
灾害及防治 | 862篇 |
出版年
2024年 | 6篇 |
2023年 | 300篇 |
2022年 | 903篇 |
2021年 | 741篇 |
2020年 | 563篇 |
2019年 | 544篇 |
2018年 | 728篇 |
2017年 | 877篇 |
2016年 | 810篇 |
2015年 | 1108篇 |
2014年 | 1587篇 |
2013年 | 2071篇 |
2012年 | 1695篇 |
2011年 | 1858篇 |
2010年 | 1405篇 |
2009年 | 1369篇 |
2008年 | 1481篇 |
2007年 | 1164篇 |
2006年 | 1065篇 |
2005年 | 802篇 |
2004年 | 602篇 |
2003年 | 735篇 |
2002年 | 659篇 |
2001年 | 535篇 |
2000年 | 577篇 |
1999年 | 603篇 |
1998年 | 544篇 |
1997年 | 527篇 |
1996年 | 486篇 |
1995年 | 419篇 |
1994年 | 286篇 |
1993年 | 271篇 |
1992年 | 207篇 |
1991年 | 160篇 |
1990年 | 113篇 |
1989年 | 76篇 |
1988年 | 65篇 |
1987年 | 29篇 |
1986年 | 32篇 |
1985年 | 20篇 |
1984年 | 18篇 |
1983年 | 17篇 |
1982年 | 16篇 |
1981年 | 10篇 |
1975年 | 1篇 |
1974年 | 2篇 |
1973年 | 1篇 |
1972年 | 2篇 |
1971年 | 1篇 |
1968年 | 1篇 |
排序方式: 共有10000条查询结果,搜索用时 531 毫秒
1.
Liu Shun Jia Xu Xin Long 《Environmental science and pollution research international》2021,28(16):20157-20173
Environmental Science and Pollution Research - The existing literature on the environmental Kuznets curve (EKC) fails to investigate the spatial attribute of the “pollution halo” effect... 相似文献
2.
Liu Xin Li Shunlong 《Environmental science and pollution research international》2021,28(46):65200-65215
Environmental Science and Pollution Research - Growing environmental pressure urges China to develop in a sustainable and low carbon way, and thus China strives to achieve a carbon peak by 2030 and... 相似文献
3.
Zhu Rong Wang Shixin Srinivasakannan C. Li Shiwei Yin Shaohua Zhang Libo Jiang Xiaobin Zhou Guoli Zhang Ning 《Environmental Chemistry Letters》2023,21(3):1611-1626
Environmental Chemistry Letters - The demand for lithium is growing rapidly with the increase in electric vehicles, batteries and electronic equipments. Lithium can be extracted from brines, yet... 相似文献
4.
Liu Qiang Xu Shengxia Lu Xiaoli 《Environmental science and pollution research international》2021,28(28):37231-37243
Environmental Science and Pollution Research - The impact of high concentrations of air pollution on COVID-19 has been a major air quality and life safety issue in recent studies. This study aimed... 相似文献
5.
Yan Mi He Lei Prabowo Bayu Fang Zhumin Lin Jie Xu Zhang Hu Yanjun 《Journal of Material Cycles and Waste Management》2018,20(3):1594-1604
Journal of Material Cycles and Waste Management - Efforts to improve the performance of hydrothermal treatment (HT) in producing high-quality solid fuel from sewage sludge were carried out by... 相似文献
6.
Journal of Material Cycles and Waste Management - The iron ore tailing (IOT) is an industrial waste, in which large accumulations represent a serious environmental threat. To reduce the... 相似文献
7.
Shu-Yii Wu Yong-Fang Liu Ya-Chieh Li Chun-Min Liu 《International Journal of Green Energy》2015,12(10):1025-1030
The CO2 absorption capacities of potassium glycinate, potassium sarcosinate (choline, proline), mono-ethanolamine (MEA), and tri-ethanolamine were evaluated to find the optimal absorbent for separating CO2 from gaseous products by a CO2 purification process. The absorption loading, desorption efficiency, cost, and environmental tolerance were assessed to select the optimal absorbent. MEA was found to be the optimum absorbent for separating the CO2 and H2 mixture in gaseous product. The maximum absorption loading rate was 0.77 mol CO2 per mol MEA at temperature of 20°C and absorbent concentration of 2.5 mol/L, whereas desorption efficiency was 90% by heating for 3 h at 130°C. MEA was found to be an optimal absorbent for the purification process of CO2 during gaseous production. 相似文献
8.
Abbasi Farzana Fakhur-un-Nisa Tahmina Liu Jingbo Luo Xuegang Abbasi Imtiaz Hussain Raja 《Environmental science and pollution research international》2019,26(10):9469-9479
Environmental Science and Pollution Research - Phosphorus is an essential macro-mineral nutrient for poultry, needed for the body growth, development of bones, genomic function, good... 相似文献
9.
Tang Zhi Li Yilian Yang Zhe Liu Danqing Tang Min Yang Sen Tang Ye 《Environmental science and pollution research international》2019,26(20):20277-20285
Environmental Science and Pollution Research - The sorption/desorption behaviors of benzene, toluene, ethylbenzene, and xylene (BTEX) on soil organic matter (SOM) have a significant influence on... 相似文献
10.
Land degradation is a global problem that seriously threatens human society. However, in China and elsewhere, ecological restoration still largely relies on a traditional approach that focuses only on ecological factors and ignores socioeconomic factors. To improve the effectiveness of ecological restoration and maximize its economic and ecological benefits, a more efficient approach is needed that provides support for policy development and land management and thereby promotes environmental conservation. We devised a framework for assessing the value of ecosystem services that remain after subtracting costs, such as the opportunity costs, costs of forest protection, and costs for the people who are affected by the program; that is, the net value of ecosystem services (NVES). To understand the difference between the value of a resource and the net value of the ecosystem service it provides, we used data on VES, timber sales, and afforestation costs from China's massive national afforestation programs to calculate the net value of forest ecosystem services in China. Accounting for the abovementioned costs revealed an NVES of ¥6.1 × 1012 for forests in 2014, which was 35.9% less than the value calculated without accounting for costs. As a result, the NVES associated with afforestation was 55.9% less than the NVES of natural forests. In some regions, NVES was negative because of the huge costs of human-made plantations, high evapotranspiration rates (thus, high water opportunity costs), and low forest survival rates. To maximize the ecological benefits of conservation, it is necessary to account for as many costs as possible so that management decisions can be based on NVES, thereby helping managers choose projects that maximize both economic and ecological benefits. 相似文献