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51.
Erik Meers Pieter Vervaeke Filip M.G. Tack Noel Lust Marc Verloo Els Lesage 《补救:环境净化治理成本、技术与工艺杂志》2003,13(3):87-97
Remediation of heavy metal contamination in soil is a widespread environmental issue. Conventional remediation techniques are invasive and often too expensive, particularly if large areas of soil are contaminated. Phytoremediation is the use of plants to remediate soil and groundwater. Phytoremediation of inorganic comtaminants such as metals can be further catagorized into phytostabilization and phytoextraction. These techniques have gained an increasing amount of attention and research over the last ten years. Phytoextraction of heavy metals and periodical removal of harvestable plant parts results in a gradual decrease of pollutant levels in the top soil. Woody species such as Salix sp. (willow) do not represent the fastest phytoextraction procedure compared to uptake by herbaceous species; however, they offer the added advantage of possible reuse of the produced biomass (wood) for the production of renewable energy. Here we present the results of a field experiment conducted to evaluate the use of Salix to remediate soil contaminated with cadmium and zinc at a dredged sediment disposal site in Flanders, Belgium. © 2003 Wiley Periodicals, Inc. 相似文献
52.
The recycling sector in India, which consists of a comprehensive trade and production sector, is rather complex. Nevertheless, it creates important benefits for both the economy and the environment. In order to comprehend the system, a case study has been performed on the recycling sector (paper, plastic, glass and non-ferrous metal) in Bangalore (India), focussing on the market structure, the scale of operation, employment effects, constraints, and recent developments. It was found that this highly competitive and labour-intensive industry is largely dependent on cheap labour and the supply of solid waste from the local trade system. Its mostly informal nature results from the ‘unregisteredness’ of the materials. Consequently, government involvement is avoided as much as possible. With present growth rates, prospects of recycling in Bangalore are advancing. Yet, problems such as lack of supply and loss of quality emerge. Therefore, quality control and market conditions should be improved. 相似文献
53.
This paper discusses the major developments in regional policy in the Netherlands by relating the policy instruments and locations to stages in the socio‐economic and political development of the Netherlands from 1945 onwards. It concludes that, at present, the spatial dimension of economic policy has lost importance, and the support for peripheral regions is restricted. 相似文献
54.
Hanneke Kruize Peter P. J. Driessen Pieter Glasbergen Klaas Van Egmond Ton Dassen 《Journal of Environmental Planning and Management》2007,50(6):699-726
This paper examines the impact of the interplay between market forces and government policy on environmental equity in the vicinity of Amsterdam Airport in the Netherlands. Despite pressure on space and the presence of the international airport, exposure to the higher levels of traffic noise, NO2 and external safety risks, and accumulation of traffic noise and NO2 (‘bads’) was rather limited and generally distributed fairly equally among income categories, probably as a result of environmental regulations. However, lower-income categories had less access to lower levels of traffic noise, NO2 and public green space (‘goods’) than higher-income categories, which may be explained by both historical processes and market forces. Policy makers seem to accept a higher environmental burden on the regional population because of the benefits for the national economy generated by Amsterdam Airport. 相似文献
55.
High bat (Chiroptera) diversity in the Early Eocene of India 总被引:1,自引:0,他引:1
Smith T Rana RS Missiaen P Rose KD Sahni A Singh H Singh L 《Die Naturwissenschaften》2007,94(12):1003-1009
The geographic origin of bats is still unknown, and fossils of earliest bats are rare and poorly diversified, with, maybe,
the exception of Europe. The earliest bats are recorded from the Early Eocene of North America, Europe, North Africa and Australia
where they seem to appear suddenly and simultaneously. Until now, the oldest record in Asia was from the Middle Eocene. In
this paper, we report the discovery of the oldest bat fauna of Asia dating from the Early Eocene of the Cambay Formation at
Vastan Lignite Mine in Western India. The fossil taxa are described on the basis of well-preserved fragments of dentaries
and lower teeth. The fauna is highly diversified and is represented by seven species belonging to seven genera and at least
four families. Two genera and five species are new. Three species exhibit very primitive dental characters, whereas four others
indicate more advanced states. Unexpectedly, this fauna presents strong affinities with the European faunas from the French
Paris Basin and the German Messel locality. This could result from the limited fossil record of bats in Asia, but could also
suggest new palaeobiogeographic scenarios involving the relative position of India during the Early Eocene. 相似文献
56.
57.
Archetypical patterns and trajectories of land systems in Europe 总被引:1,自引:0,他引:1
Levers Christian Müller Daniel Erb Karlheinz Haberl Helmut Jepsen Martin Rudbeck Metzger Marc J. Meyfroidt Patrick Plieninger Tobias Plutzar Christoph Stürck Julia Verburg Peter H. Verkerk Pieter J. Kuemmerle Tobias 《Regional Environmental Change》2018,18(3):715-732
Regional Environmental Change - Assessments of land-system change have dominantly focused on conversions among broad land-use categories, whereas intensity changes within these categories have... 相似文献
58.
Anabela Carvalho Margit van Wessel Pieter Maeseele 《Environmental Communication: A Journal of Nature and Culture》2017,11(1):122-135
In this article, we call for a refocusing of research on citizens’ political engagement with climate change. In doing so, we argue that communication practices not only help create the conditions for political engagement but they also comprise the modes of such engagement. Our argument proceeds in four steps. First, we review the literature on public engagement with climate change, concluding that there is a lack of attention to issues regarding the political. Consequently, we make the case for a refocusing of research on political engagement. Second, we explain how the notion of political subjectivity helps us to understand the relation between communication practices and engagement with the politics of climate change. Third, we discuss examples of dominant communication practices that constrain citizen political engagement by depoliticizing climate change, and alternative communication practices that have the potential to politicize. We end by outlining the many research questions that relate to the study of political engagement with climate change. 相似文献
59.
Christoph Plutzar Christine Kroisleitner Helmut Haberl Tamara Fetzel Claudia Bulgheroni Tim Beringer Patrick Hostert Thomas Kastner Tobias Kuemmerle Christian Lauk Christian Levers Marcus Lindner Dietmar Moser Daniel Müller Maria Niedertscheider Maria Luisa Paracchini Sibyll Schaphoff Peter H. Verburg Pieter J. Verkerk Karl-Heinz Erb 《Regional Environmental Change》2016,16(5):1225-1238
Understanding patterns, dynamics, and drivers of land use is crucial for improving our ability to cope with sustainability challenges. The human appropriation of net primary production (HANPP) framework provides a set of integrated socio-ecological indicators that quantify how land use alters energy flows in ecosystems via land conversions and biomass harvest. Thus, HANPP enables researchers to systematically and consistently assess the outcome of changes in land cover and land-use intensity across spatio-temporal scales. Yet, fine-scale HANPP assessments are so far missing, an information important to address site-specific ecological implications of land use. Here, we provide such an assessment for Europe at a 1-km scale for the years 1990, 2000, and 2006. The assessment was based on a consistent land-use/biomass flow dataset derived from statistical data, remote sensing maps, and a dynamic global vegetation model. We find that HANPP in Europe amounted to ~43 % of potential productivity, well above the global average of ~25 %, with little variation in the European average since 1990. HANPP was highest in Central Europe and lower in Northern and Southern Europe. At the regional level, distinct changes in land-use intensity were observed, most importantly the decline of cropland areas and yields following the breakdown of socialism in Eastern Europe and the subsequent recovery after 2000, or strong dynamics related to storm events that resulted in massive salvage loggings. In sum, however, these local dynamics cancelled each other out at the aggregate level. We conclude that this finding warrants further research into aspects of the scale-dependency of dynamics and stability of land use. 相似文献
60.
Pieter Strydom 《现代职业安全》2008,(12):80-81
随着金融危机的不断升级,世界各国都不同程度地感受到了经济衰退带来的影响。针对这种现状,IGH安瑞塔斯全球控股有限公司的风险管理专家Pieter Strydoro博士,将就全面风险管理的全球真实案例发表系列文章,旨在向中国的企业家们推广实用的、系统的风险管理框架。 相似文献