全文获取类型
收费全文 | 399篇 |
免费 | 1篇 |
国内免费 | 7篇 |
专业分类
安全科学 | 14篇 |
废物处理 | 23篇 |
环保管理 | 34篇 |
综合类 | 74篇 |
基础理论 | 52篇 |
污染及防治 | 139篇 |
评价与监测 | 48篇 |
社会与环境 | 22篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 7篇 |
2022年 | 7篇 |
2021年 | 16篇 |
2020年 | 9篇 |
2019年 | 10篇 |
2018年 | 16篇 |
2017年 | 7篇 |
2016年 | 19篇 |
2015年 | 12篇 |
2014年 | 20篇 |
2013年 | 32篇 |
2012年 | 19篇 |
2011年 | 36篇 |
2010年 | 27篇 |
2009年 | 26篇 |
2008年 | 29篇 |
2007年 | 17篇 |
2006年 | 15篇 |
2005年 | 12篇 |
2004年 | 19篇 |
2003年 | 13篇 |
2002年 | 7篇 |
2001年 | 1篇 |
1999年 | 1篇 |
1998年 | 2篇 |
1997年 | 1篇 |
1996年 | 2篇 |
1995年 | 1篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 2篇 |
1991年 | 1篇 |
1990年 | 2篇 |
1988年 | 1篇 |
1986年 | 3篇 |
1985年 | 3篇 |
1983年 | 2篇 |
1982年 | 1篇 |
1970年 | 1篇 |
1964年 | 1篇 |
排序方式: 共有407条查询结果,搜索用时 553 毫秒
331.
Joana D’Arc de Paula Flávio Jesus Luizão Maria Teresa Fernandez Piedade 《Environmental science and pollution research international》2016,23(12):11461-11470
Despite the strong representativeness of streams in the Amazon basin, their role in the accumulation of coarse particulate organic carbon (CPOC), fine particulate organic carbon (FPOC), and dissolved organic carbon (DOC) in transport, an important energy source in these environments, is poorly known. It is known that the arboreal vegetation in the Amazon basin is influenced by soil fertility and rainfall gradients, but would these gradients promote local differences in organic matter in headwater streams? To answer this question, 14 low-order streams were selected within these gradients along the Amazon basin, with extensions that varied between 4 and 8 km. The efficiency of the transformation of particulate into dissolved carbon fractions was assessed for each stream. The mean monthly benthic organic matter storage ranged between 1.58 and 9.40 t ha?1 month?1. In all locations, CPOC was the most abundant fraction in biomass, followed by FPOC and DOC. Rainfall and soil fertility influenced the distribution of the C fraction (p?=?0.01), showing differentiated particulate organic carbon (POC) storage and DOC transportation along the basin. Furthermore, the results revealed that carbon quantification at the basin level could be underestimated, ultimately influencing the global carbon calculations for the region. This is especially due to the fact that the majority of studies consider only fine particulate organic matter and dissolved organic matter, which represent less than 50 % of the stored and transported carbon in streambeds. 相似文献
332.
Rodrigo Kerr Letícia C. da Cunha Ruy K. P. Kikuchi Paulo A. Horta Rosane G. Ito Marius N. Müller Iole B. M. Orselli Jannine M. Lencina-Avila Manoela R. de Orte Laura Sordo Bárbara R. Pinheiro Frédéric K. Bonou Nadine Schubert Ellie Bergstrom Margareth S. Copertino 《Environmental management》2016,57(3):740-752
333.
De-Gao Wang Helena SteerTara Tait Zackery WilliamsGrazina Pacepavicius Teresa YoungTimothy Ng Shirley Anne SmythLaura Kinsman Mehran Alaee 《Chemosphere》2013
A comprehensive surveillance program was conducted to determine the occurrence of three cyclic volatile methylsiloxanes (cVMS) octamethylcyclotetrasiloxane (D4), decamethylcyclopentasiloxane (D5), and dodecamethylcyclohexasiloxane (D6) in environmental compartments impacted by wastewater effluent discharges. Eleven wastewater treatment plants (WWTPs), representative of those found in Southern Ontario and Southern Quebec, Canada, were investigated to determine levels of cVMS in their influents and effluents. In addition, receiving water and sediment impacted by WWTP effluents, and biosolid-amended soil from agricultural fields were also analyzed for a preliminary evaluation of the environmental exposure of cVMS in media impacted by wastewater effluent and solids. A newly-developed large volume injection (septumless head adapter and cooled injection system) gas chromatography – mass spectrometry method was used to avoid contamination originating from instrumental analysis. Concentrations of D4, D5, and D6 in influents to the 11 WWTPs were in the range 0.282–6.69 μg L−1, 7.75–135 μg L−1, and 1.53–26.9 μg L−1, respectively. In general, wastewater treatment showed cVMS removal rates of greater than 92%, regardless of treatment type. The D4, D5, and D6 concentration ranges in effluent were <0.009–0.045 μg L−1, <0.027–1.56 μg L−1, and <0.022–0.093 μg L−1, respectively. The concentrations in receiving water influenced by effluent, were lower compared to those in effluent in most cases, with the ranges <0.009–0.023 μg L−1, <0.027–1.48 μg L−1, and <0.022–0.151 μg L−1 for D4, D5, and D6, respectively. Sediment concentrations ranged from <0.003–0.049 μg g−1 dw, 0.011–5.84 μg g−1 dw, and 0.004–0.371 μg g−1 dw for D4, D5, and D6, respectively. The concentrations in biosolid-amended soil, having values of <0.008–0.017 μg g−1 dw, <0.007–0.221 μg g−1 dw, and <0.009–0.711 μg g−1 dw for D4, D5, and D6, respectively, were lower than those in sediment impacted by wastewater effluent in most cases. In comparison with the no-observed-effected concentrations (NOEC) and IC50 (concentration that causes 50% inhibition of the response) values, the potential risks to aquatic, sediment-dwelling, and terrestrial organisms from these reported concentrations are low. 相似文献
334.
Willemien Anaf Benjamin Horemans Teresa I. Madeira M. Luisa Carvalho Karolien De Wael René Van Grieken 《Environmental science and pollution research international》2013,20(3):1849-1857
In the 1970s, a large ambulatory of the National Tile Museum, Lisbon, was closed with glass panes on both ground and first floor. Although this design was meant to protect the museum collection from ambient air pollutants, small openings between the glass panes remain, creating a semi-enclosed corridor. The effects of the glass panes on the indoor air quality were evaluated in a comparative study by monitoring the airborne particle concentration and the extent of particle deposition at the enclosed corridor as well as inside the museum building. Comparison of the indoor/outdoor ratio of airborne particle concentration demonstrated a high natural ventilation rate in the enclosed corridor as well as inside the museum building. PM10 deposition velocities on vertical surfaces were estimated in the order of 3?×?10?4 m s?1 for both indoor locations. Also, the deposition rates of dark-coloured and black particles in specific were very similar at both indoor locations, causing visual degradation. The effectiveness of the glass panes in protecting the museum collection is discussed. 相似文献
335.
Abamectin is used as an acaricide and insecticide for fruits, vegetables and ornamental plants, as well as a parasiticide for animals. One of the major problems of applying pesticides to crops is the likelihood of contaminating aquatic ecosystems by drift or runoff. Therefore, toxicity tests in the laboratory are important tools to predict the effects of chemical substances in aquatic ecosystems. The aim of this study was to assess the potential hazards of abamectin to the freshwater biota and consequently the possible losses of ecological services in contaminated water bodies. For this purpose, we identified the toxicity of abamectin on daphnids, insects and fish. Abamectin was highly toxic, with an EC50 48 h for Daphnia similis of 5.1 ng L−1, LC50 96 h for Chironomus xanthus of 2.67 μg L−1 and LC50 48 h for Danio rerio of 33 μg L−1. 相似文献
336.
Artigas J Arts G Babut M Caracciolo AB Charles S Chaumot A Combourieu B Dahllöf I Despréaux D Ferrari B Friberg N Garric J Geffard O Gourlay-Francé C Hein M Hjorth M Krauss M De Lange HJ Lahr J Lehtonen KK Lettieri T Liess M Lofts S Mayer P Morin S Paschke A Svendsen C Usseglio-Polatera P van den Brink N Vindimian E Williams R 《Environmental pollution (Barking, Essex : 1987)》2012,160(1):201-206
New concerns about biodiversity, ecosystem services and human health triggered several new regulations increasing the need for sound ecotoxicological risk assessment. The PEER network aims to share its view on the research issues that this challenges. PEER scientists call for an improved biologically relevant exposure assessment. They promote comprehensive effect assessment at several biological levels. Biological traits should be used for Environmental risk assessment (ERA) as promising tools to better understand relationships between structure and functioning of ecosystems. The use of modern high throughput methods could also enhance the amount of data for a better risk assessment. Improved models coping with multiple stressors or biological levels are necessary to answer for a more scientifically based risk assessment. Those methods must be embedded within life cycle analysis or economical models for efficient regulations. Joint research programmes involving humanities with ecological sciences should be developed for a sound risk management. 相似文献
337.
338.
María Teresa García-Álvarez Isabel Soares 《Environment, Development and Sustainability》2018,20(1):83-108
Sustainable consumption and production policies have been developed by the EU as part of the United Nations 10-year framework programme on sustainable consumption and production. In this context, the study of energy consumption and production patterns might be especially relevant as the importance of energy input. This paper develops the Sustainable Energy Market Aggregated Index in the EU-28 that provides information about the achieved effects of sustainable consumption and production policies on energy efficiency, energy dependence, generation mix based on clean production technologies and competitive market structure. The results suggest that Denmark, Sweden, UK, Italy, the Netherlands have the better scores. Reinforcing measures are proposed for member states with the lowest results (Slovakia, Luxembourg, Estonia, Czech Republic and Belgium) in order to move towards more competitive energy markets. 相似文献
339.
Cañete SJ Palad LJ Enriquez EB Garcia TY Yulo-Nazarea T 《Environmental monitoring and assessment》2008,142(1-3):337-344
Phosphogypsum (PG), the major waste material in phosphate fertilizer processing, has been known to contain enhanced levels of naturally-occurring radionuclides especially (226)Ra.The lack of radioactivity data regarding Philippine phosphogypsum and its environmental behavior in the Philippine setting has brought concern on possible contamination of groundwater beneath the phosphogypsum ponds in Isabel, Leyte, Philippines. The radioactivity of Philippine phosphogypsum was determined and the leaching of (226)Ra from phosphogypsum and through local soil was quantified. Level of (226)Ra in groundwater samples in Isabel, Leyte, Philippines was also quantified to address the primary concern. It was found that the (226)Ra activity in Philippine phosphogypsum is distributed in a wide range from 91.5 to 935 Bq/kg. As much as 5% of (226)Ra can be leached from Philippine PG with deionized water. In vitro soil leach experiments suggest that the soil in the phosphate fertilizer plant area would be able to deter the intrusion of (226)Ra into the water table. Compared to reported values of natural groundwater levels of (226)Ra, the concentration of this radionuclide in Isabel, Leyte groundwater suggest that there is no (226)Ra intrusion brought about by the presence of phosphogypsum ponds in the area. 相似文献
340.
Assessing dam implementation impact on threatened carnivores: the case of Alqueva in SE Portugal 总被引:2,自引:0,他引:2
Santos MJ Pedroso NM Ferreira JP Matos HM Sales-Luís T Pereira I Baltazar C Grilo C Cândido AT Sousa I Santos-Reis M 《Environmental monitoring and assessment》2008,142(1-3):47-64
Large dam construction in water deficient areas is a management decision often controversial. Besides providing water storage, economical benefits, and a source of renewable energy, the construction and flooding caused by large dams cause disruptions in natural systems. We monitored the pre- and post-Alqueva dam impacts on the threatened carnivore species (polecat, otter, wildcat and Iberian lynx) populations in SE Portugal, and assessed which factors mostly contribute to post-dam distribution. Major short term impacts of large dams are: (1) increase in accessibility and human presence; (2) movement of heavy machinery and dam-workers; (3) deforestation with habitat loss and fragmentation; (4) change from lotic to lentic system; (5) lower prey availability and harsher capture; and (6) changes in land use adjacent to the reservoir. Thus, the response to those impacts can be predicted as a decline of polecat, wildcat and lynx distribution ranges, and a recovery of the otter from the severe short term impacts. Our results corroborate this hypothesis for all the species, especially during deforestation/early flooding. Otter's distribution range increased in the phase of greater impact, with a subsequent decrease with flooding. Our results suggest carnivores used "escape" areas with favourable habitat and prey conditions, however, the areas with higher probability of species presence decreased by two fold showing a drastic range reduction. To ensure populations' survival of these charismatic threatened carnivore populations of Mediterranean landscapes of south-east Portugal, we propose continuing the monitoring program and the development of a conservation program for the subsisting areas of optimal and suboptimal habitats. 相似文献