排序方式: 共有44条查询结果,搜索用时 15 毫秒
41.
Uwe Buczko Michael van Laak Bettina Eichler-Löbermann Wolfgang Gans Ines Merbach Kerstin Panten Edgar Peiter Thomas Reitz Heide Spiegel Sabine von Tucher 《Ambio》2018,47(1):50-61
Phosphorus (P) fertilizer recommendations in most European countries are based on plant-available soil P contents and long-term field experiments. Site-specific conditions are often neglected, resulting in excessive P fertilizer applications. P fertilization experiments including relevant site and soil parameters were evaluated in order to analyze the yield response. The database comprises about 2000 datasets from 30 field experiments from Germany and Austria. Statistical evaluations using a classification and regression tree approach, and multiple linear regression analysis indicate that besides plant-available soil P content, soil texture and soil organic matter content have a large influence on the effectiveness of P fertilization. This study methodology can be a basis for modification and specification of existing P fertilization recommendations and thus contribute to mitigate environmental impacts of P fertilization. 相似文献
42.
The paper discusses the role of visions within sustainability assessment and governance for sustainable development in Europe.
Currently, our societies (still) develop along an unsustainable path, which results in a number of persistent problems (climate
change, loss of biodiversity, poverty, etc.). Integrated sustainability assessment (ISA) is one approach designed to initiate
transitions towards sustainability. Visions of a sustainable future form an important part of ISA. These visions support the
process of discussing how the transition from today’s societies/systems to a sustainable future can be achieved. According
to the principles of ISA, visions should be developed in a participatory way, thus including the ideas and perceptions of
stakeholders, decision-makers, experts and/or citizens. The paper starts with an introduction of the concepts of visions and
scenarios and describes exemplary methods for their participatory development. Then, the main concepts for integrated sustainability
assessment in comparison with other impact assessments are discussed. The main body of the paper presents experiences in three
projects (ARTEMIS, ALARM, ECOCHANGE) in which visions and scenarios of sustainable futures were developed with stakeholders.
The paper concludes with lessons learned and suggestions for future applications for participatory scenario development. 相似文献
43.
Webster L Walsham P Russell M Hussy I Neat F Dalgarno E Packer G Scurfield JA Moffat CF 《Chemosphere》2011,83(6):839-850
Halogenated persistent organic pollutants [polychlorinated biphenyls (PCBs) and polybrominated diphenyl ethers (PBDEs)] along with total lipid, were measured in the liver and muscle of three species of deep water fish (black scabbard, black dogfish (liver only) and roundnose grenadier) collected from the Rockall fishing area, to the west of Scotland, between 2006 and 2008. Both contaminant groups were detected in the muscle and liver, with concentrations of PCBs being higher than PBDEs. There were no significant differences in the PCB or PBDE concentrations between the three species, or different sampling locations in the Rockall fishing area. PCB concentrations (ΣICES (International Council for the Exploration of the Sea)7 PCBs) greater than 500 μg kg−1 lipid weight were found in 26 of the 106 liver samples. PCB concentrations were compared to OSPAR assessment criteria, concentrations were above background but below Environmental Assessment Criteria. Estimated Toxic Equivalent (TEQ) concentrations, calculated using published models, in the fish muscle and liver indicated that consumption of deep water fish is unlikely to represent a risk to human health. The high squalene content in some of the black dogfish liver necessitated an additional clean-up step, involving gel permeation chromatography, when analyzing for PBDEs. Concentrations of PBDEs were low with many congeners being below detection limits, particularly in the muscle. There are currently no assessment criteria available for PBDEs. Furthermore, there is only very limited data on PBDEs in deep water fish. However, the concentrations observed in this study were similar to the concentrations recently reported in Mediterranean deep water fish. 相似文献
44.
Jabeur Fadoua Mechri Sondes Mensi Fethi Gharbi Ines Naser Yosri Ben Kriaa Mouna Bejaoui Nejla Bachouche Samir Badis Abdelmalek Annane Rachid Djellali Mostapha Sadok Saloua Jaouadi Bassem 《Environmental science and pollution research international》2022,29(24):36023-36039
Environmental Science and Pollution Research - The diversity of marine biomasses is a set of exploitable and renewable resources with application in several sectors. In this context, a co-culture... 相似文献