全文获取类型
收费全文 | 819篇 |
免费 | 6篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 20篇 |
废物处理 | 52篇 |
环保管理 | 35篇 |
综合类 | 115篇 |
基础理论 | 210篇 |
污染及防治 | 250篇 |
评价与监测 | 102篇 |
社会与环境 | 43篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 8篇 |
2022年 | 26篇 |
2021年 | 22篇 |
2020年 | 10篇 |
2019年 | 15篇 |
2018年 | 33篇 |
2017年 | 27篇 |
2016年 | 43篇 |
2015年 | 26篇 |
2014年 | 54篇 |
2013年 | 100篇 |
2012年 | 59篇 |
2011年 | 59篇 |
2010年 | 41篇 |
2009年 | 38篇 |
2008年 | 32篇 |
2007年 | 40篇 |
2006年 | 21篇 |
2005年 | 15篇 |
2004年 | 13篇 |
2003年 | 14篇 |
2002年 | 9篇 |
2001年 | 11篇 |
2000年 | 7篇 |
1999年 | 4篇 |
1997年 | 7篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1991年 | 2篇 |
1989年 | 2篇 |
1987年 | 3篇 |
1986年 | 2篇 |
1984年 | 2篇 |
1982年 | 2篇 |
1980年 | 2篇 |
1972年 | 3篇 |
1971年 | 2篇 |
1970年 | 7篇 |
1969年 | 2篇 |
1967年 | 4篇 |
1966年 | 3篇 |
1965年 | 2篇 |
1964年 | 2篇 |
1961年 | 3篇 |
1960年 | 5篇 |
1959年 | 5篇 |
1958年 | 10篇 |
1957年 | 5篇 |
1956年 | 3篇 |
排序方式: 共有828条查询结果,搜索用时 15 毫秒
1.
Kraigher H Al Sayegh Petkovsek S Grebenc T Simoncic P 《Environmental monitoring and assessment》2007,128(1-3):31-45
Mycorrhiza is the main spatial and temporal linkage between different constituents in a forest ecosystem. The functional compatibility
and stress tolerance of ectomycorrhizal types is species specific, and therefore the information on the ectomycorrhizal community
structure can add to the understanding of processes in forest ecosystems and can also be applied as tools for bioindication
of pollution stress in forest soils. We have studied the effects of pollution (N and S) on trees and forest soils by: (1)
quantification of ECM types diversity as in situ indicators in forest stands, (2) determination and quantification of pollution-sensitive or -insensitive ECM types as passive
monitors, (3) root growth and development of ECM on nonmycorrhizal spruce seedlings, planted at the studied sites (active
monitors), and (4) ECM infection (a bioassay based on mycorrhizal inoculum potential) of seedlings in an experimental set-up
as ex situ testers. ECM species richness for Norway spruce trees (Picea abies) showed higher values in unpolluted sites than in polluted ones, while the differences were not significant for European
beech trees (Fagus sylvatica). As pollution-sensitive or -insensitive ECM species in spruce forests, we suggest Hydnum rufescens (sensitive) and Paxillus involutus (unsensitive). Mycorrhizal potential in Norway spruce seedlings as a bioassay for soil N and S pollution was effective, and
is suggested as an additional, standardized and widely comparable system in bioindication of soil pollution. 相似文献
2.
Puška Adis Stević Željko Pamučar Dragan 《Environment, Development and Sustainability》2022,24(9):11195-11225
Environment, Development and Sustainability - Disposal of healthcare waste is a key issue of environmental sustainability in the world. The amount of healthcare waste is increasing every day, and... 相似文献
3.
Guntis Brūmelis Dennis H. Brown Olgerts Nikodemus Didzis Tjarve 《Environmental monitoring and assessment》1999,58(2):201-212
Heavy metal concentrations in Hylocomium splendens collected around a metal smelter in Latvia showed very high concentrations of Zn (>200 g/g), and elevated concentrations of Pb (38.3 g/g) and Cu (18.3 g/g). In an attempt to better evaluate the potential toxicity of the high Zn concentrations, a serial elution method was used to determine the concentrations of zinc in intercellular, extracellular exchangeable cell wall, intracellular, and particle fractions. The intercellular Zn concentrations represent the water soluble component of the total concentrations, and were low with no clear trends. Zn concentrations in the extra- and intracellular and particle fractions decreased exponentially from the pollutant source. Intracellular Zn concentrations in moss close to the emission source are within the range considered to be potentially toxic, from other single element exposure studies. The proportion of Zn in the relatively insoluble particle fraction, which is least associated with environmental risk, was greater closer to the pollution source, reaching > 30% in the oldest Hylocomium splendens segments. 相似文献
4.
CO concentrations were measured in five kindergartens, one children's hospital and two homes for aged, practically without indoor sources, all situated in the city centre, for ten random days in winter and ten in summer. The indoor CO concentrations were the result of the distance from and the traffic density in the nearest street, of general pollution level, seasonal differences, day-to-day variations and daily cycle of air pollution, the vicinity of traffic having a dominant influence. Therefore location of institutions for sensitive population groups in old city centres within a block of houses seems to be a suitable solution as far as exposure to CO is concerned.Revised version of a paper presented as poster at the VIth World Congress on Air Quality, Paris 1983. 相似文献
5.
6.
7.
8.
9.
Libor Pátý 《Die Naturwissenschaften》1959,46(13):422-423
10.