全文获取类型
收费全文 | 225篇 |
免费 | 1篇 |
国内免费 | 4篇 |
专业分类
安全科学 | 1篇 |
废物处理 | 9篇 |
环保管理 | 8篇 |
综合类 | 68篇 |
基础理论 | 41篇 |
污染及防治 | 74篇 |
评价与监测 | 11篇 |
社会与环境 | 18篇 |
出版年
2022年 | 2篇 |
2018年 | 7篇 |
2017年 | 9篇 |
2016年 | 6篇 |
2015年 | 5篇 |
2014年 | 6篇 |
2013年 | 4篇 |
2012年 | 6篇 |
2011年 | 13篇 |
2010年 | 6篇 |
2009年 | 8篇 |
2008年 | 10篇 |
2007年 | 18篇 |
2006年 | 17篇 |
2005年 | 12篇 |
2004年 | 5篇 |
2003年 | 5篇 |
2002年 | 2篇 |
2001年 | 7篇 |
2000年 | 3篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1995年 | 3篇 |
1994年 | 4篇 |
1989年 | 2篇 |
1986年 | 2篇 |
1982年 | 2篇 |
1977年 | 3篇 |
1976年 | 4篇 |
1975年 | 3篇 |
1968年 | 2篇 |
1966年 | 4篇 |
1965年 | 3篇 |
1963年 | 2篇 |
1961年 | 4篇 |
1960年 | 2篇 |
1958年 | 1篇 |
1957年 | 3篇 |
1955年 | 2篇 |
1954年 | 1篇 |
1953年 | 1篇 |
1952年 | 1篇 |
1951年 | 1篇 |
1947年 | 1篇 |
1946年 | 1篇 |
1932年 | 1篇 |
1929年 | 1篇 |
1917年 | 1篇 |
排序方式: 共有230条查询结果,搜索用时 62 毫秒
201.
Vuletić D Potočić N Krajter S Seletković I Fürst C Makeschin F Galić Z Lorz C Matijašič D Zupanič M Simončič P Vacik H 《Environmental management》2010,46(6):931-940
In this article, several findings on socio-economic conditions derived from national reports and a web-based questionnaire are discussed and related to the changing role of forestry and the future forest policy development. A number of Central and South-eastern European countries taking part in a SEE-ERA-NET project ReForMan project (www.reforman.de) participated in data acquisition: Austria, Bosnia and Herzegovina, Croatia, Germany, Serbia and Slovenia. The aim of the research was to illustrate the present structure of forestry sector, as well as investigate newly emerging topics in forestry of Central and South-eastern Europe. The results indicated certain patterns in attitudes and perceptions among stakeholders that can be related to socio-economic conditions defined for each country. Clear differences between member and non-member countries exist only in level of implementation of EU legislation. Results showed consensus on main threats to the forests among all countries, but also some country specifics in perceptions of factors influencing forestry, their importance and professional competencies. These results could be additionally explained by influence of historical conditions which shaped development of forest sector in SEE region especially in its organizational dimension as well as in perceived role of forestry expressed through recognition of main forest functions. The influence of European forest policy processes in the region is evident through adaptation of EU legislation and perceived implications of international processes on national levels. Based on this observation, two possible options for future development of the forestry sector can be foreseen: (i) focusing on the productive function of forests and fostering its' sustainable use; or (ii) putting an emphasis on environmental and social issues. In both cases supporting public participation in decision-making processes is recommendable. Another conclusion based on perceived medium to low professional competencies to cope with new topics, that there is lack of confidence and need for professional support in decisionmaking processes. 相似文献
202.
Ralf Kaegi Brian Sinnet Harald Hagendorfer Roger Vonbank Michael Burkhardt 《Environmental pollution (Barking, Essex : 1987)》2010,158(9):2900-2905
In this study we investigate the release of metallic silver nanoparticles (Ag-NP) from paints used for outdoor applications. A facade panel mounted on a model house was exposed to ambient weather conditions over a period of one year. The runoff volume of individual rain events was determined and the silver and titanium concentrations of 36 out of 65 runoff events were measured. Selected samples were prepared for electron microscopic analysis. A strong leaching of the Ag-NP was observed during the initial runoff events with a maximum concentration of 145 μ Ag/l. After a period of one year, more than 30% of the Ag-NP were released to the environment. Particles were mostly <15 nm and are released as composite colloids attached to the organic binders of the paint. Microscopic results indicate that the Ag-NP are likely transformed to considerably less toxic forms such as Ag2S. 相似文献
203.
In this study a combined approach of bioindication results correlated with an extensive set of data on air pollution and climate was used to assess the pollution status of the Man and Biosphere Reserve Wienerwald (Austria). Bryophytes served as impact indicators (via the Index of Atmospheric Purity-method IAP) at 30 sites as well as accumulation monitors for airborne trace elements (Al, Pb, V, S, Zn, Fe, Cu, Cr, Ni, Co, Mo, Cd, As, Sb and 16 EPA-PAHs) at 10 sites within the reserve. The results of these bioindication methods were subsequently correlated with further pollution (NO(2), SO(2) and dust) and climate data (precipitation, temperature and humidity). The findings obtained clearly indicate the following: Bryophyte distribution is solely influenced by the status of air quality, without interference by climatic or site-related factors, which is in contrast to several previous investigations. IAP-values correlated significantly with NO(2) (0.553; P=0.004), SO(2) winter values (0.511; P=0.013) and PM10 (dust) (0.561; P=0.013). The results obtained via chemical analyses revealed a strong correlation with data derived from the IAP methodology. In terms of the overall air quality within the biosphere reserve Wienerwald, the north-eastern part appears to be the most affected one with a most likely pollution contribution emitted by the capital city Vienna, agriculture and neighbouring countries. 相似文献
204.
Criteria and indicators assessment is one of the ways to evaluate management strategies for mountain watersheds. One framework
for this, Integrated Watershed Management (IWM), was employed at Chittagong Hill Tracts region of Bangladesh using a multi-criteria
analysis approach. The IWM framework, consisting of the design and application of principles, criteria, indicators, and verifiers
(PCIV), facilitates active participation by diverse professionals, experts, and interest groups in watershed management, to
explicitly address the demands and problems to measure the complexity of problems in a transparent and understandable way.
Management alternatives are developed to fulfill every key component of IWM considering the developed PCIV set and current
situation of the study area. Different management strategies, each focusing on a different approach (biodiversity conservation,
flood control, soil and water quality conservation, indigenous knowledge conservation, income generation, watershed conservation,
and landscape conservation) were assessed qualitatively on their potential to improve the current situation according to each
verifier of the criteria and indicator set. Analytic Hierarchy Process (AHP), including sensitivity analysis, was employed
to identify an appropriate management strategy according to overall priorities (i.e., different weights of each principle)
of key informants. The AHP process indicated that a strategy focused on conservation of biodiversity provided the best option
to address watershed-related challenges in the Chittagong Hill Tracts, Bangladesh. 相似文献
205.
Different collector types for sampling deposition of polycyclic aromatic hydrocarbons--comparison of measurement results and their uncertainty 总被引:1,自引:0,他引:1
Gladtke D Bakker F Biaudet H Brennfleck A Coleman P Creutznacher H Van Egmond BF Hafkenscheid T Hahne F Houtzager MM Leoz-Garziandia E Menichini E Olschewski A Remesch T 《Journal of environmental monitoring : JEM》2012,14(8):2054-2062
Different collector types, sample workup procedures and analysis methods to measure the deposition of polycyclic aromatic hydrocarbons (PAH) were tested and compared. Whilst sample workup and analysis methods did not influence the results of PAH deposition measurements, using different collector types changed the measured deposition rates of PAH significantly. The results obtained with a funnel-bottle collector showed the highest deposition rates and a low measurement uncertainty. The deposition rates obtained with the wet-only collectors were the lowest at industrial sites and under dry weather conditions. For the open-jar collectors the measurement uncertainty was high. Only at an industrial site with extremely high PAH deposition rates the results of open-jar collectors were comparable to those obtained with funnel-bottle collectors. Thus, if bulk deposition of PAH has to be measured, funnel-bottle combinations are proved to be the collectors of choice. These collectors were the only ones always fulfilling the requirements of European legislation. 相似文献
206.
Špela Bavec Mateja Gosar Miloš Miler Harald Biester 《Environmental geochemistry and health》2017,39(3):443-465
A comprehensive geochemical investigation of potentially harmful elements (PHEs) in household dust from the town of Idrija (Slovenia), once a world-famous Hg mining town that is now seriously polluted, was performed for the first time. After aqua regia digestion, the content of mercury (Hg), arsenic (As), cadmium (Cd), cobalt (Co), chromium (Cr), copper (Cu), molybdenum (Mo), nickel (Ni), lead (Pb) and zinc (Zn) was measured. PHE-bearing particles were recognised and observed by scanning electron microscopy and energy-dispersive spectrometry before and after exposure to simulated stomach acid (SSA). Mercury binding forms were identified by Hg thermal desorption technique and gastric bioaccessible Hg was estimated after SSA extraction by ICP-MS. With regard to rural and urban background values for Slovenia, high Hg content (6–120 mg/kg) and slightly elevated As content (1–13 mg/kg) were found. Mercury pollution is a result of past mining and ore processing activities. Arsenic content is potentially associated with As enrichment in local soils. Four Hg binding forms were identified: all samples contained Hg bound to the dust matrix, 14 samples contained cinnabar, two samples contained metallic Hg (Hg0), and one sample assumingly contained mercury oxide. After exposure to SSA, Hg-bearing phases showed no signs of dissolution, while other PHE-bearing phases were significantly morphologically and/or chemically altered. Estimated gastric Hg bioaccessibility was low (<0.006–0.09 %), which is in accordance with identified Hg binding forms and high organic carbon content (15.9–31.5 %) in the dust samples. 相似文献
207.
Kris Verheyen Margot Vanhellemont Harald Auge Lander Baeten Christopher Baraloto Nadia Barsoum Simon Bilodeau-Gauthier Helge Bruelheide Bastien Castagneyrol Douglas Godbold Josephine Haase Andy Hector Hervé Jactel Julia Koricheva Michel Loreau Simone Mereu Christian Messier Bart Muys Philippe Nolet Alain Paquette John Parker Mike Perring Quentin Ponette Catherine Potvin Peter Reich Andy Smith Martin Weih Michael Scherer-Lorenzen 《Ambio》2016,45(1):29-41
208.
Winfried Schröder Stefan Nickel Simon Schönrock Michaela Meyer Werner Wosniok Harry Harmens Marina V. Frontasyeva Renate Alber Julia Aleksiayenak Lambe Barandovski Alejo Carballeira Helena Danielsson Ludwig de Temmermann Barbara Godzik Zvonka Jeran Gunilla Pihl Karlsson Pranvera Lazo Sebastien Leblond Antti-Jussi Lindroos Siiri Liiv Sigurður H. Magnússon Blanka Mankovska Javier Martínez-Abaigar Juha Piispanen Jarmo Poikolainen Ion V. Popescu Flora Qarri Jesus Miguel Santamaria Mitja Skudnik Zdravko Špirić Trajce Stafilov Eiliv Steinnes Claudia Stihi Lotti Thöni Hilde Thelle Uggerud Harald G. Zechmeister 《Environmental science and pollution research international》2016,23(11):10457-10476
For analysing element input into ecosystems and associated risks due to atmospheric deposition, element concentrations in moss provide complementary and time-integrated data at high spatial resolution every 5 years since 1990. The paper reviews (1) minimum sample sizes needed for reliable, statistical estimation of mean values at four different spatial scales (European and national level as well as landscape-specific level covering Europe and single countries); (2) trends of heavy metal (HM) and nitrogen (N) concentrations in moss in Europe (1990–2010); (3) correlations between concentrations of HM in moss and soil specimens collected across Norway (1990–2010); and (4) canopy drip-induced site-specific variation of N concentration in moss sampled in seven European countries (1990–2013). While the minimum sample sizes on the European and national level were achieved without exception, for some ecological land classes and elements, the coverage with sampling sites should be improved. The decline in emission and subsequent atmospheric deposition of HM across Europe has resulted in decreasing HM concentrations in moss between 1990 and 2010. In contrast, hardly any changes were observed for N in moss between 2005, when N was included into the survey for the first time, and 2010. In Norway, both, the moss and the soil survey data sets, were correlated, indicating a decrease of HM concentrations in moss and soil. At the site level, the average N deposition inside of forests was almost three times higher than the average N deposition outside of forests. 相似文献
209.
Harald Geiger Karl H. Becker 《Journal of the Air & Waste Management Association (1995)》2013,63(4):425-433
Abstract Based on exhaust gas analyses from the combustion of five different types of gasoline in a passenger car operated on a chassis dynamometer, box model simulations of the irradiation of exhaust/NOx /air mixtures using an established chemical mechanism for a standardized photo-smog scenario were performed. The fuel matrix used covered wide fractional ranges for paraffinic, olefinic, and aromatic hydrocarbons. Two fuels also contained methyl tertiary butyl ether (MTBE). The different O3 profiles calculated for each run were compared and interpreted. The O3 levels obtained were strongly influenced by the exhaust gas concentrations of aromatic and olefinic hydro-carbons. The higher exhaust content of these compounds caused higher O3 production in the smog system investigated. The conclusion of the present study is that the composition of gasoline cannot be taken directly for the estimation of the emissions’ O3 creation potential from its combustion. Variation of the dilution in the different calculations showed evidence for an additional influence of transport effects. Accordingly, further detailed exhaust gas analyses followed by more complex modeling studies are necessary for a proper characterization of the relationship between fuel blend and gasoline combustion products. 相似文献
210.
This article exemplifies an approach to analyzing political arguments and press deliberation on the issue of climate change and oil policy. I apply political discourse analysis to examine an oil minister's press conference presentation of the key official document on Norway's future oil policy, and evaluate how he attempted to reconcile the country's expansive petroleum policy with its self-proclaimed ambition of being world leading in responsible climate policy. The analysis displays how the minister's argumentation served to legitimate an expansive oil policy by projecting an altruistic motivation and invoking the authority of the tradition of the industry. This is supplemented by an analysis of newspaper editorials and commentaries on the speech, identifying a major split in viewpoints between local and national newspapers. The analyses evaluate arguments in an explicit manner, for example by critically questioning their value premises, thus suggesting an approach that could benefit critical research on environmental communication. 相似文献