全文获取类型
收费全文 | 2670篇 |
免费 | 259篇 |
国内免费 | 1041篇 |
专业分类
安全科学 | 264篇 |
废物处理 | 135篇 |
环保管理 | 238篇 |
综合类 | 1850篇 |
基础理论 | 413篇 |
污染及防治 | 742篇 |
评价与监测 | 121篇 |
社会与环境 | 104篇 |
灾害及防治 | 103篇 |
出版年
2024年 | 14篇 |
2023年 | 83篇 |
2022年 | 173篇 |
2021年 | 181篇 |
2020年 | 171篇 |
2019年 | 128篇 |
2018年 | 134篇 |
2017年 | 154篇 |
2016年 | 141篇 |
2015年 | 156篇 |
2014年 | 225篇 |
2013年 | 264篇 |
2012年 | 219篇 |
2011年 | 230篇 |
2010年 | 213篇 |
2009年 | 182篇 |
2008年 | 177篇 |
2007年 | 170篇 |
2006年 | 140篇 |
2005年 | 95篇 |
2004年 | 63篇 |
2003年 | 60篇 |
2002年 | 67篇 |
2001年 | 78篇 |
2000年 | 83篇 |
1999年 | 71篇 |
1998年 | 54篇 |
1997年 | 42篇 |
1996年 | 45篇 |
1995年 | 39篇 |
1994年 | 34篇 |
1993年 | 23篇 |
1992年 | 21篇 |
1991年 | 5篇 |
1990年 | 9篇 |
1989年 | 5篇 |
1988年 | 5篇 |
1987年 | 1篇 |
1986年 | 3篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1974年 | 1篇 |
1973年 | 5篇 |
1972年 | 1篇 |
1971年 | 1篇 |
1969年 | 1篇 |
排序方式: 共有3970条查询结果,搜索用时 31 毫秒
91.
随着城市生活水平的提高,室内装修装饰日益普及.各种新材料的引入,使得室内的各种有害气体总量日益增加.长期生活在这样的环境下,会对人体健康产生极为不利的影响.居民生活用煤气,在给人们生活带来便利的同时,作为一种可燃性、有毒气体,也具有极强的危害性.因此,研制一种能检测多种有害气体的实用仪器,具有很大的应用价值.本仪器为便携式多功能仪器,采用可充电电池供电,可以检测ppb的挥发性气体,显示气体浓度值,也可检测煤气,并具有声光报警功能. 相似文献
92.
Zhao Long Zhao Xinbo Li Yuanze Shi Yi Zhou Hanmi Li Xiuzhen Wang Xiaodong Xing Xuguang 《Environmental science and pollution research international》2023,30(9):22396-22412
Environmental Science and Pollution Research - The accurate prediction of daily reference crop evapotranspiration (ETO) enables effective management decision-making for agricultural water... 相似文献
93.
Chen Yujun Guan Bin Wu Xingze Guo Jiangfeng Ma Zeren Zhang Jinhe Jiang Xing Bao Shibo Cao Yiyan Yin Chengdong Ai Di Chen Yuxuan Lin He Huang Zhen 《Environmental science and pollution research international》2023,30(5):11246-11271
Environmental Science and Pollution Research - In recent years, with global climate change, the utilization of carbon dioxide as a resource has become an important goal of human society to achieve... 相似文献
94.
Li Jintao Jiang Changjun Xing Zhanjun 《Environment, Development and Sustainability》2021,23(8):12151-12168
Environment, Development and Sustainability - With the rapid development of industrialization and urbanization and the continuous improvement of social productivity, people are increasingly... 相似文献
95.
Xueqi Fan Jie Gao Wenchao Li Jun Huang Gang Yu 《Frontiers of Environmental Science & Engineering》2020,14(1):8
96.
Gong Weifeng Zhang Haixia Wang Chuanhui Wu Bin Yuan Yaqi Fan Shengjie 《Environmental science and pollution research international》2023,30(6):14641-14655
Environmental Science and Pollution Research - The Yellow River Basin is an energy-rich area. The low-carbon development of the Yellow River Basin is one of the ways to achieve ecological... 相似文献
97.
China’s large population and deteriorating environment have created great concern related to the sustainability of food production, especially since details related to this topic remain poorly studied. Thus, an integrated analysis of both crop yield and cultivated area is essential for gaining a better understanding of cereal grain production in China and for making corresponding policies designed to achieve food security. In this study, we adopt trend analysis of both provincial yield and cultivated area to assess the subsequent provincial-level cereal production sustainability between 1980 and 2011 with the goal of providing a better understanding of regional agricultural development. The results indicate that while maize shows the most promise for yield improvement, rice and wheat production is experiencing substantial yield stagnation among most provinces across mainland China. In addition, the trends in spatial patterns are prominently different from those of yields. The sizes of the main rice- and wheat-growing areas in China have declined greatly, suggesting that the related production of these cereals should attract more attention from land management planners and farmers. Specifically, the south-eastern coastal provinces have largely failed to sustain both crop yield and area, while the north-eastern provinces have witnessed thriving agricultural production during the last three decades. Moreover, we find that cereal production in China is significantly affected by governmental policies related to the agricultural sector. Thus, this analysis of food production in China will help policymakers to better understand how the potential implications of food security in China may be applicable to countries worldwide. 相似文献
98.
厌氧式折流反应器(Anaerobic Baffled Reactor,简称ABR)是一种新型高效厌氧反应器,具有工艺技术简单、建设投资费用低、运行管理方便、固液分离效果好、出水水质好、运行稳定可靠、对有毒物质适应性强等优点,是一种极具开发应用前景的废水生物处理新技术。ABR最大的特点是在反应器中设置上下折流板而在水流方向上形成依次串联的隔室,从而使其中的微生物种群沿长度方向的不同隔室实现产酸和产甲烷相的分离。该反应器具有结构简单,截留污泥能力强,系统处理效果稳定,运行管理方便等优点。分析了ABR及ABR与其它工艺的联合在果汁废水处理方面的应用。 相似文献
99.
Zhang Xiaoli Cai Xuewei Wang Zhaowei Yang Xing Li Shan Liang Guiwei Xie Xiaoyun 《Environmental science and pollution research international》2021,28(11):13375-13393
Environmental Science and Pollution Research - A large amount of biochar-derived dissolved organic matter (BDOM) will be released into the environment with biochars application into repairing... 相似文献
100.
Liu Xi Wang Xuelei Zhang Lu Fan Weiying Yang Chao Li Enhua Wang Zhi 《Environmental science and pollution research international》2021,28(2):1712-1724
Environmental Science and Pollution Research - Groundwater pollution seriously threatens water resource safety due to high-intensity land use throughout the world. However, the relationship between... 相似文献