全文获取类型
收费全文 | 294篇 |
免费 | 11篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 15篇 |
废物处理 | 4篇 |
环保管理 | 61篇 |
综合类 | 42篇 |
基础理论 | 72篇 |
污染及防治 | 74篇 |
评价与监测 | 12篇 |
社会与环境 | 19篇 |
灾害及防治 | 9篇 |
出版年
2023年 | 4篇 |
2022年 | 8篇 |
2021年 | 6篇 |
2020年 | 8篇 |
2019年 | 6篇 |
2018年 | 9篇 |
2017年 | 16篇 |
2016年 | 13篇 |
2015年 | 15篇 |
2014年 | 14篇 |
2013年 | 29篇 |
2012年 | 10篇 |
2011年 | 25篇 |
2010年 | 14篇 |
2009年 | 10篇 |
2008年 | 10篇 |
2007年 | 6篇 |
2006年 | 11篇 |
2005年 | 4篇 |
2004年 | 12篇 |
2003年 | 14篇 |
2002年 | 10篇 |
2001年 | 6篇 |
2000年 | 6篇 |
1999年 | 4篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1995年 | 5篇 |
1994年 | 2篇 |
1993年 | 3篇 |
1992年 | 4篇 |
1990年 | 2篇 |
1989年 | 1篇 |
1988年 | 2篇 |
1987年 | 2篇 |
1986年 | 2篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1982年 | 2篇 |
1978年 | 2篇 |
1972年 | 2篇 |
1964年 | 1篇 |
1958年 | 1篇 |
排序方式: 共有308条查询结果,搜索用时 31 毫秒
191.
Kirsten Maclean Helen Ross Michael Cuthill Bradd Witt 《Journal of Environmental Planning and Management》2017,60(3):519-537
Resilience thinking has developed separately in the bodies of literature on social-ecological systems, and that published principally within developmental psychology and mental health on the resilience of individuals. This paper explores what these bodies of literature might learn from the other towards a more integrated and enriched understanding of both social-ecological systems and social resilience. The psychology-based literature recognises a strong set of factors that enhance the strengths of individuals and communities, but lacks a sophisticated integration of the physical environmental context. The social-ecological systems literature offers an excellent foundation in complex adaptive systems, but tends to superimpose ecological concepts of system function onto the human domain, and needs to include an array of core social science concepts that are important to a full understanding of social-ecological systems. An example on north eastern Australia suggests how a converged understanding of social resilience could assist managers to acknowledge, enhance and foster social resilience in linked social-ecological systems. 相似文献
192.
Györgyi Bela Taru Peltola Juliette C. Young Bálint Balázs Isabelle Arpin György Pataki Jennifer Hauck Eszter Kelemen Leena Kopperoinen Ann Van Herzele Hans Keune Susanne Hecker Monika Suškevičs Helen E. Roy Pekka Itkonen Mart Külvik Miklós László Corina Basnou Joan Pino Aletta Bonn 《Conservation biology》2016,30(5):990-999
The number of collaborative initiatives between scientists and volunteers (i.e., citizen science) is increasing across many research fields. The promise of societal transformation together with scientific breakthroughs contributes to the current popularity of citizen science (CS) in the policy domain. We examined the transformative capacity of citizen science in particular learning through environmental CS as conservation tool. We reviewed the CS and social‐learning literature and examined 14 conservation projects across Europe that involved collaborative CS. We also developed a template that can be used to explore learning arrangements (i.e., learning events and materials) in CS projects and to explain how the desired outcomes can be achieved through CS learning. We found that recent studies aiming to define CS for analytical purposes often fail to improve the conceptual clarity of CS; CS programs may have transformative potential, especially for the development of individual skills, but such transformation is not necessarily occurring at the organizational and institutional levels; empirical evidence on simple learning outcomes, but the assertion of transformative effects of CS learning is often based on assumptions rather than empirical observation; and it is unanimous that learning in CS is considered important, but in practice it often goes unreported or unevaluated. In conclusion, we point to the need for reliable and transparent measurement of transformative effects for democratization of knowledge production. 相似文献
193.
Helen Kopnina 《中国人口.资源与环境(英文版)》2014,(4):290-300
This article will briefly discuss the implications of recognition of ecological justice in relation to environmental education(EE) and education for sustainable development(ESD).It is argued that the present conception of environment taught through EE and ESD negates the subjectivity of non-human species and ignores the ethical imperatives of ecological justice.Evocating environmental ethics,major directions integrating ecological justice into EE and ESD are proposed. 相似文献
194.
195.
Helen Kopnina 《The Environmentalist》2014,34(2):312-322
This article aims to interrogate manifold features, uses and manifestations of the term sustainability through critical reflection on paradoxes of “sustainable development.” This article will discuss the implication of the environmental Kuznets curve hypothesis, postmaterialist values theory, and ecological modernization theory all of which expresses a certain relationship between the wealth of a nation and their environment impact. According to these theories, during early industrialization and development, economies use materially intensive resources, until a threshold is reached after which the economic and technological changes allow for more sustainable material use. Simultaneously, it is believed that concerns about environment are secondary to economic concerns and that satisfaction of material needs will lead to higher environmental awareness. The aim of this article is to reflect upon a gap in the literature of empirical case studies to support or refute these theories. While there is a wealth of publications detailing various unsustainable practices in different countries, studies addressing the implication of the accuracy of the triple theories for the global enterprise of development are rare. To compensate for this oversight, this article will address the case of Dutch Queen’s day celebrations in April 2013, based on the document analysis. In generalizing the case of Dutch Queen’s day celebrations to global consumption patterns, this article considers consequences of Western consumption model for the enterprise of global development. It is argued that the Dutch case supports evidence of the (un)sustainability of a consumptive economy operating within a global market. Alternative framework based on cradle-to-cradle and circular economy approaches is proposed. 相似文献
196.
Neal C Rowland P Neal M Jarvie HP Lawlor A Sleep D Scholefield P 《Journal of environmental monitoring : JEM》2011,13(8):2153-2164
Dissolved aluminium concentrations ([Al]) in the <0.45 μm filtered fraction are described for 54 UK river sites covering rural, acidic/acid sensitive, agricultural and urban typologies, and wide pH range (4 to 11). High [Al] occurred under acidic conditions and for acid runoff neutralised by bicarbonate rich groundwater. Thermodynamic analysis indicates Al hydroxide/hydroxy-silicate oversaturation at circumneutral pH across the rivers, but undersaturation at lower/higher pH. The oversaturation reflects in part the presence of Al bearing colloids as indicated by (1) [Al] being correlated with components associated with both lithogenic (Fe, Ti and lanthanides) colloids and organic carbon, (2) baseflow studies using cross-flow ultrafiltration and (3) comparison of our data with Acid Waters Monitoring Network (AWMN) information on labile and non-labile Al. Tree harvesting and emission reductions of SO(x) in acidic and acid sensitive catchments in mid-Wales led to acidification reversal, lower [Al] and changing [H(+)] - [Al] relationships. The [Al] decline was confined to acidic conditions while [Al] increased during the later part of the monitoring period with a peak around 2002 for moorland and forested systems. Colloidal production across the flow range was indicated late in the record by comparison of our data with information collected by the AWMN for a site in mid-Wales. This production seems interlinked with organic carbon and with dissolved CO(2) changes. In order for further understanding of Al hydrogeochemistry in river systems there is a need to integrate research that moves from equilibrium to kinetic and colloidal consideration including the critical issues of organic and inorganic controls within the context of bioavailability and aquatic stress. The colloidal Al may well be of low environmental concern to fish and other factors such as habitat may well be critical. 相似文献
197.
Frans J. Los Cardi van den Berg Hajo I. J. Wildschut Helen Brandenburg Nicolette S. den Hollander Ernst M. Schoonderwaldt Leen Pijpers Robert Jan H. Galjaard Diane Van Opstal 《黑龙江环境通报》2001,21(13):1150-1158
First-trimester chorionic villus sampling has not reached the popularity of second-trimester amniocentesis in prenatal cytogenetic diagnosis, in contrast to initial expectations. We investigated whether a difference inthe diagnostic performances of cytogenetic investigation in amniotic fluid (AF) cells and chorionic villi in favour of AF-cells might justify this. Diagnostic performance was measured as laboratory failure rate, karyotype quality (G-band score, rate of follow-up samples, rate of wrong diagnoses), and karyotype representativity (rate of follow-up samples, rate of wrong diagnoses). From 1993–1999, 11 883 AF-samples were investigated (AF-cells). In chorionic villi, short term culture preparations solely were karyotyped from 1993–1996 (n=3499) (STC-villi), short and long-term culture preparations simultaneously provided a sufficient amount of tissue being available from 1997 onwards (n=1829) ((STC+LTC)-villi). Laboratory failure rates were the same after amniocentesis (0.40%) and chorionic villus sampling (0.50%). G-band scores (mean±SD) were equal in AF-cells (373±38.1) and LTC-villi (364±32.6) but significantly lower in STC-villi (311±34.6) (p=0.001). Follow-up sampling rates because of quality reasons were the same in AF-cells (0.14%), STC- villi (0.13%) and (STC+LTC)-villi (0.11%). Two wrong diagnoses turned up among AF-cells. Follow-up sampling rates because of representativity reasons differed significantly between AF-cells (0.10%), (STC+LTC)-villi (1.31%), and STC-villi (1.99%) (p<0.001). However, the ratios of the total numbers of follow-up samples and uncertain or abnormal cytogenetic results in STC, and (STC+LTC)-villi at cytogenetic risks ⩾3% (0.132 and 0.160, respectively) were equal to that in AF-cells at risks <3% (0.155). Two wrong diagnoses were made in STC-villi. Diagnostic performance improved in the rank order of STC-villi, (STC+LTC)-villi and AF-cells. At cytogenetic risks ⩾3%, (STC+LTC)-villi showed a diagnostic performance equal to that in AF-cells. This might justify a selective use of chorionic villus sampling. Copyright © 2001 John Wiley & Sons, Ltd. 相似文献
198.
Ernst ten Heuvelhof 《生态毒理学报》2001,23(1):59-61
公用事业已经对环境质量产生重要的影响,特别是在市区 .初看起来,放宽限制或公用事业的私有化似乎提供不了任何环境效益 .然而,如果在一个合适的管理法律体制内发生这样一个变化,结果实际上是提高了人们对可持续发展的注意 .关于这一点,给出了一个关于改善公路运输的可持续发展性机会的实例研究 . 相似文献
199.
Helen J. Byron Joanna R. Treweek William R. Sheate Stewart Thompson 《Journal of Environmental Planning and Management》2000,43(1):71-97
Environmental impact assessment (EIA) has been required for certain proposed road developmentsin the UK since EC Directive (85/337) was implemented in 1988. The extent to which the requirements of the EIA Directive are met with respect to ecological issues has been explored in earlier reviews of road statements (Treweek et al., 1993) and of UK environmental impact statements (EISs) in general (Thompson et al., 1997). This paper describes the results of a further review of 40 EISs produced between 1993 and 1997 and also examines recent changes in the political context for EIA of proposed road developments,including developments in UK transport policy and the UK biodiversity process. The results of the review suggest that the ecological assessment of proposed road developments has improved in some respects, but also highlights the persistence of many shortcomings identified in earlier reviews. The reasons for ongoing failure to address these issues are explored. Key findings include a marked improvement in the extent of reference to consultation with statutory consultees and an increase in the proportion of EISs reporting the results of new ecological surveys. However, while potential ecological impacts were discussed in all the EISs reviewed, many still failed to predict the full range of potential ecological impacts. 相似文献
200.
Nicholas Lench Angela Barrett Sarah Fielding Fiona McKay Melissa Hill Lucy Jenkins Helen White Lyn S. Chitty 《黑龙江环境通报》2013,33(6):555-562
Recently, we have witnessed the rapid translation into clinical practice of non-invasive prenatal testing for the common aneuploidies, most notably within the United States and China. This represents a lucrative market with testing being driven by companies developing and offering their services. These tests are currently aimed at women with high/medium-risk pregnancies identified by serum screening and/or ultrasound scanning. Uptake has been impressive, albeit limited to the commercial sector. However, non-invasive prenatal diagnosis (NIPD) for single-gene disorders has attracted less interest, no doubt because this represents a much smaller market opportunity and in the majority of cases has to be provided on a bespoke, patient or disease-specific basis. The methods and workflows are labour-intensive and not readily scalable. Nonetheless, there exists a significant need for NIPD of single-gene disorders, and the continuing advances in technology and data analysis should facilitate the expansion of the NIPD test repertoire. Here, we review the progress that has been made to date, the different methods and platform technologies, the technical challenges, and assess how new developments may be applied to extend testing to a wider range of genetic disorders. © 2013 John Wiley & Sons, Ltd. 相似文献