全文获取类型
收费全文 | 13650篇 |
免费 | 1223篇 |
国内免费 | 1429篇 |
专业分类
安全科学 | 2176篇 |
废物处理 | 194篇 |
环保管理 | 2952篇 |
综合类 | 7001篇 |
基础理论 | 1250篇 |
环境理论 | 47篇 |
污染及防治 | 482篇 |
评价与监测 | 889篇 |
社会与环境 | 1033篇 |
灾害及防治 | 278篇 |
出版年
2024年 | 61篇 |
2023年 | 169篇 |
2022年 | 246篇 |
2021年 | 384篇 |
2020年 | 405篇 |
2019年 | 376篇 |
2018年 | 343篇 |
2017年 | 645篇 |
2016年 | 678篇 |
2015年 | 702篇 |
2014年 | 660篇 |
2013年 | 956篇 |
2012年 | 1061篇 |
2011年 | 1084篇 |
2010年 | 863篇 |
2009年 | 765篇 |
2008年 | 535篇 |
2007年 | 845篇 |
2006年 | 843篇 |
2005年 | 744篇 |
2004年 | 633篇 |
2003年 | 588篇 |
2002年 | 434篇 |
2001年 | 411篇 |
2000年 | 400篇 |
1999年 | 279篇 |
1998年 | 219篇 |
1997年 | 180篇 |
1996年 | 147篇 |
1995年 | 158篇 |
1994年 | 90篇 |
1993年 | 92篇 |
1992年 | 64篇 |
1991年 | 39篇 |
1990年 | 28篇 |
1989年 | 25篇 |
1988年 | 15篇 |
1987年 | 8篇 |
1986年 | 11篇 |
1984年 | 7篇 |
1982年 | 7篇 |
1981年 | 11篇 |
1980年 | 10篇 |
1979年 | 12篇 |
1978年 | 6篇 |
1977年 | 10篇 |
1975年 | 8篇 |
1974年 | 7篇 |
1973年 | 10篇 |
1972年 | 9篇 |
排序方式: 共有10000条查询结果,搜索用时 312 毫秒
931.
932.
建设项目竣工环保验收中公众参与的探讨 总被引:1,自引:1,他引:0
建设项目竣工环境保护验收是我国环境保护管理的重要手段。阐述了建设项目竣工环境保护验收中公众参与的法律和制度基础,竣工环保验收中公众参与不仅能维护公众的环境权益,为竣工环保验收“三同时”制度的执行提供可靠依据,还可以推动环保行政主管部门决策的民主化、科学化。研究了竣工环保验收中公众意见调查的现状及存在的问题,提出加强和规范建设项目竣工环保验收公众参与的建议。 相似文献
933.
934.
住宅遭受交通噪声污染时开发商应承担的民事责任初探 总被引:1,自引:0,他引:1
从分析住宅遭受交通噪声污染时开发商民事责任的性质入手,探讨了现行声环境质量标准对开发商的适用性和合理性,阐明了开发商的责任范围,提出了完善住宅声环境质量标准的建议。主要结论:目前我国尚缺乏合理的约束开发商的住宅声环境质量标准;开发商的隔声减噪义务主要包括留出与道路之间的防噪距离和采取安装隔声窗、封闭阳台等隔声措施;应将门窗封闭状态下的室内噪声限值颁布为住宅声环境质量标准。 相似文献
935.
936.
937.
Emma Ter Mors Mieneke W.H. Weenig Naomi Ellemers Dancker D.L. Daamen 《Journal of environmental psychology》2010,30(4):347-357
This experimental research addresses the effectiveness of communication about complex environmental issues, depending on whether the same information is provided by multiple collaborating or by individual organizations (i.e., stakeholders). The information provided pertains to carbon dioxide capture and storage (CCS) technology, as an example of a complex environmental issue. In Studies 1 (N = 75) and 2 (N = 66) we found that participants perceived factual information from collaborating stakeholders to be of higher quality than when the same information was provided by individual stakeholders. As predicted, the expectation of diverse perspectives being represented in the collaborative information mediated this effect. In addition, in Study 3 (N = 79) the perceived dissimilarity of collaborating stakeholders was shown to be an important precondition for the collaboration effect observed in Studies 1 and 2. Finally, these studies indicate that occasional collaboration between different stakeholders does not necessarily harm the perceived credibility of each individual stakeholder. 相似文献
938.
939.
Co-composting of livestock manure with rice straw: Characterization and establishment of maturity evaluation system 总被引:5,自引:0,他引:5
Xiaoyong Qian Genxiang Shen Zhenqi Wang Chunxia Guo Yangqing Liu Zhongfang Lei Zhenya Zhang 《Waste management (New York, N.Y.)》2014,34(2):530-535
Composting is considered to be a primary treatment method for livestock manure and rice straw, and high degree of maturity is a prerequisite for safe land application of the composting products. In this study pilot-scale experiments were carried out to characterize the co-composting process of livestock manure with rice straw, as well as to establish a maturity evaluation index system for the composts obtained. Two pilot composting piles with different feedstocks were conducted for 3 months: (1) swine manure and rice straw (SM–RS); and (2) dairy manure and rice straw (DM–RS). During the composting process, parameters including temperature, moisture, pH, total organic carbon (TOC), organic matter (OM), different forms of nitrogen (total, ammonia and nitrate), and humification index (humic acid and fulvic acid) were monitored in addition to germination index (GI), plant growth index (PGI) and Solvita maturity index. OM loss followed the first-order kinetic model in both piles, and a slightly faster OM mineralization was achieved in the SM–RS pile. Also, the SM–RS pile exhibited slightly better performance than the DM–RS according to the evolutions of temperature, OM degradation, GI and PGI. The C/N ratio, GI and PGI could be included in the maturity evaluation index system in which GI > 120% and PGI > 1.00 signal mature co-composts. 相似文献
940.