全文获取类型
收费全文 | 1383篇 |
免费 | 36篇 |
国内免费 | 17篇 |
专业分类
安全科学 | 48篇 |
废物处理 | 82篇 |
环保管理 | 166篇 |
综合类 | 200篇 |
基础理论 | 303篇 |
环境理论 | 2篇 |
污染及防治 | 444篇 |
评价与监测 | 102篇 |
社会与环境 | 78篇 |
灾害及防治 | 11篇 |
出版年
2024年 | 1篇 |
2023年 | 28篇 |
2022年 | 58篇 |
2021年 | 55篇 |
2020年 | 37篇 |
2019年 | 31篇 |
2018年 | 62篇 |
2017年 | 67篇 |
2016年 | 94篇 |
2015年 | 68篇 |
2014年 | 93篇 |
2013年 | 122篇 |
2012年 | 106篇 |
2011年 | 95篇 |
2010年 | 66篇 |
2009年 | 67篇 |
2008年 | 70篇 |
2007年 | 61篇 |
2006年 | 53篇 |
2005年 | 34篇 |
2004年 | 30篇 |
2003年 | 25篇 |
2002年 | 22篇 |
2001年 | 13篇 |
2000年 | 7篇 |
1999年 | 9篇 |
1998年 | 12篇 |
1997年 | 3篇 |
1996年 | 7篇 |
1995年 | 7篇 |
1994年 | 4篇 |
1993年 | 4篇 |
1992年 | 2篇 |
1991年 | 3篇 |
1990年 | 1篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1987年 | 4篇 |
1985年 | 2篇 |
1984年 | 4篇 |
1981年 | 1篇 |
1972年 | 1篇 |
1964年 | 1篇 |
1957年 | 1篇 |
1956年 | 1篇 |
排序方式: 共有1436条查询结果,搜索用时 62 毫秒
61.
Ongoing eutrophication is changing the Baltic Sea ecosystem. Aquaculture causes relatively small-scale nutrient emissions,
but local environmental impact may be considerable. We used substance flow analysis (SFA) to identify and quantify the most
significant flows and stocks of nitrogen (N) and phosphorus (P) related to rainbow trout aquaculture in Finland. In 2004–2007,
the input of nutrients to the system in the form of fish feed was 829 t N year−1 and 115 t P year−1. Around one-fifth of these nutrients ended up as food for human consumption. Of the primary input, 70% ended up in the Baltic
Sea, directly from aquaculture and indirectly through waste management. The nutrient cycle could be closed partially by using
local fish instead of imported fish in rainbow trout feed, thus reducing the net load of N and P to a fraction. 相似文献
62.
Southern Chile encompasses one of the most extensive fjord regions of the world, the Patagonia, currently exposed to natural
and anthropogenic perturbations. These fjord ecosystems provide important services to humans, which have not been adequately
measured and valued. As a consequence, ecosystem services are commonly ignored in public policy design and in the evaluation
of development projects. Here we tackle questions that are highly relevant for the nation’s development, namely (1) understanding
fjord functioning, and (2) developing management strategies based on ecosystem services, in order to secure simultaneous and
adequate use of these ecosystems which area influenced by ecological (e.g., biogeochemical) and productive (e.g., aquaculture,
fisheries) processes. We also seek to strengthen the analysis of fjord ecosystem value from the economical (including coastal
zoning), socio-cultural, institutional, and governmental points of view. In addition, the investigation of current and future
effects of climate change on this large region offers a unique opportunity to understand the social and economic consequences
of a global phenomenon at local to regional scales. Biogeochemical and socio-economic models will be used to simulate future
scenarios under a gamut of management options. 相似文献
63.
64.
Laura B. Brentner Sachiyo T. Mukherji Jerald L. Schnoor 《Environmental pollution (Barking, Essex : 1987)》2010,158(2):470-475
Phosphor imager autoradiography is a technique for rapid, sensitive analysis of the localization of xenobiotics in plant tissues. Use of this technique is relatively new to research in the field of plant science, and the potential for enhancing visualization and understanding of plant uptake and transport of xenobiotics remains largely untapped. Phosphor imager autoradiography is used to investigate the uptake and translocation of the explosives 1,3,5-trinitro-1,3,5-triazine (RDX) and 2,4,6-trinitrotoluene within Populus deltoides × nigra DN34 (poplar) and Panicum vigratum Alamo (switchgrass). In both plant types, TNT and/or TNT-metabolites remain predominantly in root tissues while RDX and/or RDX-metabolites are readily translocated to leaf tissues. Phosphor imager autoradiography is further investigated for use in semi-quantitative analysis of uptake of TNT by switchgrass. 相似文献
65.
Riparian Bird Communities as Indicators of Human Impacts Along Mediterranean Streams 总被引:1,自引:0,他引:1
Riparian areas link aquatic and terrestrial habitats, supporting species-rich bird communities, which integrate both terrestrial
and aquatic processes. For this reason, inclusion of riparian birds in stream bioassessment could add to the information currently
provided by existing programs that monitor aquatic organisms. To assess if bird community metrics could indicate stream conditions,
we sampled breeding birds in the riparian zone of 37 reaches in 5 streams draining watersheds representing a gradient of agricultural
intensity in central Italy. As a more direct indicator of water quality, stream macroinvertebrates were also sampled for computation
of the Italian Extended Biotic Index (IBE). An anthropogenic index was calculated within 1 km of sampled reaches based on
satellite-derived land-use classifications. Predictive models of macroinvertebrate integrity based on land-use and avian metrics
were compared using an information-theoretic approach (AIC). We also determined if stream quality related to the detection
of riverine species. Apparent bird species diversity and richness peaked at intermediate levels of land-use modification,
but increased with IBE values. Water quality did not relate to the detection of riverine species as a guild, but two species,
the dipper Cinclus cinclus and the grey wagtail Motacilla cinerea, were only observed in reaches with the highest IBE values. Small-bodied insectivorous birds and arboreal species were detected
more often in reaches with better water quality and in less modified landscapes. In contrast, larger and granivorous species
were more common in disturbed reaches. According to the information-theoretic approach, the best model for predicting water
quality included the anthropogenic index, bird species diversity, and an index summarizing the trophic structure of the bird
community. We conclude that, in combination with landscape-level information, the diversity and trophic structure of riparian
bird communities could serve as a rapid indicator of stream-dwelling macroinvertebrates and, therefore, degradation of in-stream
biotic integrity. 相似文献
66.
Bernardo Hernández Ana M. Martín Cristina Ruiz M del Carmen Hidalgo 《Journal of environmental psychology》2010
Place identity and place attachment have been related to several environmental variables such as appropriation, residential satisfaction, physical care taken of the neighbourhood, restorativeness, environmental attitudes and, especially, pro-environmental behaviour. However, the role of place identity and place attachment has not been analyzed in relation to anti-ecological behaviours such as transgressions of environmental protection laws. The aim of this study is to analyze the relationship of place identity, place attachment and environmental attitudes to the personal and social norms that explain the likelihood of illegal behaviours against the environment. The sample was composed of men and women, aged from 19 to 70 years, who were resident in rural, urban or tourist areas of a territory under high environmental protection. The strongest predictor of environmental transgression is personal norms, whereas place identity and place attachment have no direct relation with future transgression or personal norms. Place identity influences environmental attitudes and social norms, which are both antecedents of personal norms. The results led us to reconsider the efficacy of interventions aimed at encouraging compliance with environmental laws by only emphasizing individuals' bonds with the environment, and the need to extend the study of the role of personal and social norms in environmental protection. 相似文献
67.
Wenying Chen Yves-Michel Le Nindre Ruina Xu Delphine Allier Fei Teng Kim Domptail Xing Xiang Laura Guillon Jiyong Chen Lingyan Huang Rongshu Zeng 《International Journal of Greenhouse Gas Control》2010,4(2):341-350
A method, based on spatial analysis of the different criteria to be taken into consideration for building scenarios of CO2 capture and storage (CCS), has been developed and applied to real case studies in the Hebei province. Totally 88 point sources (42 from power sector, 9 from iron and steel, 18 from cement, 16 from ammonia, and 3 from oil refinery) are estimated and their total emission amounts to 231.7 MtCO2/year with power, iron and steel, cement, ammonia and oil refinery sharing 59.13%, 25.03%, 11.44%, 3.5%, and 0.91%, respectively. Storage opportunities can be found in Hebei province, characterised by a strong tectonic subsidence during the Tertiary, with several kilometres of accumulated clastic sediments. Carbon storage potential for 25 hydrocarbon fields selected from the Huabei complex is estimated as 215 MtCO2 with optimistic assumption that all recovered hydrocarbon could be replaced by an equivalent volume of CO2 at reservoir conditions. Storage potential for aquifers in the Miocene Guantao formation is estimated as 747 MtCO2 if closed aquifer assumed or 371 MtCO2 if open aquifer and single highly permeable horizon assumed. Due to poor knowledge on deep hydrogeology and to pressure increase in aquifer, injecting very high rates requested by the major CO2 sources (>10 MtCO2/year) is the main challenge, therefore piezometry and discharge must be carefully controlled. A source sink matching model using ArcGIS software is designed to find the least-cost pathway and to estimate transport route and cost accounting for the additional costs of pipeline construction due to landform and land use. Source sink matching results show that only 15–25% of the emissions estimated for the 88 sources can be sequestrated into the hydrocarbon fields and the aquifers if assuming sinks should be able to accommodate at least 15 years of the emissions of a given source. 相似文献
68.
Ariela D'Angiola Laura E. Dawidowski Darío R. Gómez Mauricio Osses 《Atmospheric environment (Oxford, England : 1994)》2010,44(4):483-493
A new annual bottom–up emission inventory of criteria pollutants and greenhouse gases from on-road mobile sources was developed for 2006 for the metropolitan area of Buenos Aires, Argentina, within a four-year regional project aimed at providing tools for chemical weather forecast in South America. Under the scarcity of local emission factors, we collected data from measuring campaigns performed in Argentina, Brazil, Chile and Colombia and compiled a data set of regional emission factors representative of Latin American fleets and driving conditions. The estimated emissions were validated with respect to downscaled national estimates and the EDGAR global emission database. Our results highlight the role of older technologies accounting in average for almost 80% of the emissions of all species. The area exhibits higher specific emissions than developed countries, with figures two times higher for criteria pollutants. We analyzed the effect on emissions of replacing gasoline by compressed natural gas, occurring in Argentina since 1995. We identified (i) a relationship between number of vehicles and a compound socioeconomic indicator, and (ii) time-lags in vehicle technologies between developed and developing countries, which can be respectively applied for spatial disaggregation and the development of projections for other Latin American cities. The results may also be employed to complement global emission inventories and by local policy makers as an environmental management tool. 相似文献
69.
Fabjola Bilo Laura Borgese Davide Cazzago Annalisa Zacco Elza Bontempi Rita Guarneri Marco Bernardello Silvia Attuati Pranvera Lazo Laura E. Depero 《Environmental science and pollution research international》2014,21(23):13208-13214
Total reflection x-ray fluorescence spectroscopy (TXRF) is proposed for the elemental chemical analysis of crustal environmental samples, such as sediments and soils. A comparative study of TXRF with respect to flame atomic absorption spectroscopy and inductively coupled plasma optical emission spectroscopy was performed. Microwave acid digestion and suspension preparation methods are evaluated. A good agreement was found among the results obtained with different spectroscopic techniques and sample preparation methods for Cr, Mn, Fe, Ni, Cu, and Zn. We demonstrated that TXRF is suitable for the assessment of environmental contamination phenomena, even if the errors for Pb, As, V, and Ba are ingent. 相似文献
70.
Indication of airborne pollution by birch and spruce in the vicinity of copper smelter 总被引:1,自引:0,他引:1
Snezana M. Serbula Ana A. Radojevic Jelena V. Kalinovic Tanja S. Kalinovic 《Environmental science and pollution research international》2014,21(19):11510-11520
The aim of the study was determination of air pollution impact of the copper smelter in Bor and its surroundings (Serbia) by assessing the suitability of birch (Betula pendula Roth.) and spruce (Picea abies L.) for the purposes of biomonitoring and comparing it with previously published data from the same study area. The concentrations of Cu, Zn, Pb and Mn in leaves/needles, branches, roots and soil were determined. Sampling was performed during 2009 in two zones with high load of air pollution due to copper mining and smelting activities, and one background zone. Metal accumulation and translocation was evaluated in terms of biological factors. In addition, plant enrichment factor was calculated. According to the results, plant foliage was not enriched through soil, which indicates absorption from the air, with both species acting as excluders of Cu, Pb, Zn and Mn. Leaves were more enriched with all the metals than needles, indicating a better response of birch to airborne pollution than spruce. Cluster analysis showed different level of pollution at the sites, while correlations between Cu and Pb obtained by Principal Component Analysis indicated their anthropogenic origin. Regarding previously published results, beside birch leaves, pine needles (which showed higher level of response to pollution compared to linden leaves) could be applied in air biomonitoring surveys near copper smelters. 相似文献