Das Projekt "B 3.1: Efficient water use of mixed cropping systems in watersheds of Northern Thailand highlands" wird vom Umweltbundesamt gefördert und von Universität Hohenheim, Institut für Kulturpflanzenwissenschaften (340), Fachgebiet Düngung und Bodenstoffhaushalt (340i) durchgeführt. Worldwide an important part of agricultural added value is produced under irrigation. By irrigation unproductive areas can be cultivated, additional harvests can be obtained or different crops can be planted. Since its introduction into Northern Thailand lychee has developed as one of the dominating cash crops. Lychee is produced in the hillside areas and has to be irrigated during the dry season, which is the main yield-forming period. Water therefore is mainly taken from sources or streams in the mountain forests. As nowadays all the available resources are being used do to increased production, a further increase in production can only be achieved by increasing the water use efficiency. In recent years, partial root-zone drying has become a well-established irrigation technique in wine growing areas. In a ten to fifteen days rhythm one part of the root system is irrigated while the other dries out and produces abscisic acid (ABA) a drought stress hormone. While the vegetative growth and thus labor for pruning is reduced, the generative growth remains widely unaffected. Thereby water-use efficiency can be increased by more than 40Prozent. In this sub-project the PRD-technique as well as other deficit irrigation strategies shall be applied in lychee and mango orchards and its effects on plant growth and yield shall be analyzed. Especially effects of this water-saving technology on the nutrient balance shall be considered, in order to develop an optimized fertigation strategy with respect to yield and fruit quality. As shown in preliminary studies, the nutrient supply is low in soils and fruit trees in Northern Thailand (e.g. phosphate) and even deficient for both micronutrients boron (B) and zinc (Zn). Additionally, non-adapted supply of nitrogen (mineralization, fertilization) can induce uneven flowering and fruit set. Therefore, improvement is necessary. For a better understanding of possible influence of low B and Zn supply on flowering and fruit set, mobility and retranslocation of both micronutrients shall be investigated for mango and lychee. Finally, the intended system of partial root-zone fertigation (PRF) shall guarantee an even flowering and a better yield formation under improved use of the limited resource water. As this modern technique, which requires a higher level of irrigation-technology, cannot be immediately spread among the farmers in the region, in a parallel approach potential users shall be integrated in a participative process for adaptation and development. Water transport and irrigation shall be considered, as both factors offer a tremendous potential for water saving. Local knowledge shall be integrated in the participatory process (supported by subproject A1.2, Participatory Research) in order to finally offer adapted technologies for application within PRF systems for the different conditions of farmers in the hillsides of Northern Thailand.
Das Projekt "Forest management and habitat structure - influences on the network of song birds, vectors and blood parasites" wird vom Umweltbundesamt gefördert und von Universität Freiburg, Forstzoologisches Institut, Professur für Wildtierökologie und Wildtiermanagement durchgeführt. Forest structure is altered by humans for long times (Bramanti et al. 2009). The long lasting modification of forests pursuant to human demands modified the living conditions for birds as well as for many other animals. This included changes in resource availability (e.g., food, foraging, nesting sites) and changes of interspecific interactions, e.g., parasitism and predation (Knoke et al. 2009; Ellis et al. 2012). Also species compositions and the survivability of populations and even species are affected. The loss of foraging sites and suitable places for reproduction, the limitation of mobility due to fragmented habitats and the disturbances by humans itself may lead to more stressed individuals and less optimal living conditions. In certain cases species are not able to deal with the modified requirements and their populations will shrink and even vanish. Depending on the intensity of management and the remaining forest structure, biodiversity is more or less endangered. Especially in systems of two or more strongly connected taxa changing conditions that affect at least one part may subsequently affect the other, too. One system of interspecific communities that recently attracted the attention of biologists includes birds, blood parasites (haemosporidians) and their transmitting vectors. For instance, avian malaria (Plasmodium relictum) represents the reason for extreme declines in the avifauna of Hawaii since the introduction of respective vectors (e.g. Culicidae) during the 20th century (van Riper et al. 1986, Woodworth et al. 2005). With the current knowledge of this topic we are not able to predict if such incidences could also occur in Germany. All in all, different management strategies and intensity of forest management may influence the network of birds, vectors and blood parasites and change biodiversity. To elucidate this ecological complex, and to understand the interactions of the triad of songbirds as vertebrate hosts, dipteran vectors and haemosporidians within changing local conditions, I intend to collect data on the three taxa in differently managed forest areas, the given forest structure and the climatic conditions. I will try to explain the role of abiotic factors on infection dynamics, in detail the role of forest management intensity. Data acquisition takes place at three spatially divided locations: inside the Biodiversity Exploratory Schwäbische Alb, at the Mooswald in Freiburg, and inside the Schwarzwald.
Das Projekt "Impact of Landscape Level Land Use Changes with Study Sites in Nicaragua" wird vom Umweltbundesamt gefördert und von Universität Göttingen, Burckhardt-Institut, Abteilung Waldinventur und Fernerkundung durchgeführt. The main cause of loss of natural resources in Central America is the advance of the agricultural border (UICN, 2001), demanding more land area to produce the same amount of food, as a consequence of the loss of the productive capacity of the ground and the decrease sources (García 2003), the traditional farming practices as crop in the zones of greater slopes, exaggerated use of agrochemical substances and overpasturing have caused negative impacts on the ecosystems (Córdoba, 2002). At the moment livestock is one of the activities of production that have the biggest share of the regions economy (ILRI, 2004), although at the same time it has been announced one of the main causes of the natural ecosystems transformation, provocing the loss of the agrosystems sustainability (Kaimowitz 1996). Taking into account that the systems of extensive production are coming along with the degradation of natural ressources that exist in the forest, an approach of new technics, that are compatible with livestock production and the conservation of natural ressources become necessary. One of these approaches is the introduction of Silvopastoral technologies (Ibrahim et al. 1999). SilvoPastoral Systems (SPS) constitute an alternative for cattle production, where wooded perennial (trees and/or shrubs) interact with the traditional components (herbaceous covers and animals) under a system of integral handling (Ibrahim, 1996). This is a system of sustainable production that, through transformations that improve the performance in production, generates environmental services when protecting and conserving the sources (Ibrahim et al. 2003). Objectives: Identify land use of SPS by analysing satellite imagery (Lansat TM/ ETM+ and Quickbird). Identify the contribution of SPS to the recovery of forestal coverage and the cabon stock in Nicaragua by the application of GIS (Geographic Informatic Systems). Determine the duration of the carbon fixation in SPS.
Das Projekt "46th Congress of the European Societies of Toxicology, Dresden, 13.09. - 16.09.2009" wird vom Umweltbundesamt gefördert und von Universität Halle-Wittenberg, Universitätsklinikum Halle (Saale), Institut für Umwelttoxikologie durchgeführt. It is our great pleasure to invite you to our Scientific Workshop on Safety Assessment and Regulation of Nanomaterials to be held at the International Conference Centre Dresden, Germany. Nanotechnology is a powerful tool to optimize technical processes or to generate new materials with exciting functionalities. High expectations are connected to products of nanotechnology with regard to energy efficiency, new materials, electronics, solutions to decrease energy needs for information technologies or data storage. Following introduction of nanomaterials in new technologies, regulators, developers and the producers are confronted with a growing list of questions addressing the safety of nanomaterials for consumers and environment. The participants are invited to give their input into the discussion on the long term safe use of nanoproducts with regard to work place, human health and environment. The complexity of the ongoing risk discussion is a challenge to demonstrate the ability of toxicological work in academia, industry and regulation. It is also a big chance to bring our expertise into society on our common way to find the right balance between chances of new technologies and level of acceptance of remaining risks. The scientific program will be a variety of opportunities to share knowledge lecture sessions and a poster session. Perspective of Regulation and Ethical demands, Products of Nanotechnology in use and under development, Exposure and uptake, Possible health hazards, New Functionalities of nanomaterials, Information Requirements for Safety Assessment of Nanomaterials, Nanomaterials in the Environment, Wrapping up Plenum or Working group.
Das Projekt "C 4.1: Impact of land-use intensification on land -use dynamics and environmental services of tropical mountainous watersheds" wird vom Umweltbundesamt gefördert und von Universität Hohenheim, Institut für Tropische Agrarwissenschaften (Hans-Ruthenberg-Institut), Fachgebiet Pflanzenbau in den Tropen und Subtropen (490e) durchgeführt. Changing socio-economic conditions and the introduction of new technologies are rapidly altering land use in Vietnam and Thailand. In both countries farmland is often characterized by relatively steep slopes and is thus highly susceptible to land degradation by soil erosion. Intensification of agricultural systems has led to higher systems productivity but with associated increased resource use and degradation/pollution risks. The goal of this subproject is to comprehend the biophysical linkages and drivers of land-use changes in upland areas of Vietnam and Thailand and their impact on systems productivity, sustainability and environmental services. This can be only assessed by an approach, integrating the various systems and processes at stake and looking at their interconnectivity at landscape level. Of special interest is thus quantification and modelling of the interrelationships and feedback mechanisms between agricultural components within these complex ecosystems. Subproject C4.1 will develop a spatially explicit, integrated dynamic biophysical model for land use change impact assessment (LUCIA) to understand systems relationships at the landscape level and subsequently link this landscape model to the multi-agent-system (MAS) model of G1.2 (Innovations and Sustainability Strategies). In Vietnam, subproject C4.1 will investigate how nutrient and carbon losses and associated soil degradation in uplands will impact on lowland paddy rice and fish production systems. In North Thailand, an existing crop/tree model will be improved to assist in assessing the impact off-season fruit production technologies or management options on plant productivity, resource use and carbon sequestration and its modules integrated in the MAS model. The integrated biophysical and MAS models will allow assessing alternative options so that policy-relevant conclusions can then be drawn regarding the promotion of improved conservation and management systems, adapted to both the local populations and systems of governance in tropical humid mountainous watersheds from Thailand and Vietnam.
Das Projekt "Upwind: Development of Improved Wind Turbine Noise Prediction Tools for Low Noise Airfoil Design" wird vom Umweltbundesamt gefördert und von Universität Stuttgart, Institut für Aerodynamik und Gasdynamik durchgeführt. The noise regulations of various countries urge wind turbine manufacturers to reduce the aerodynamical noise emission of their turbines. To reduce the greenhouse gas emission, wind energy has been put in a very front position. EWEA estimates 12percent of worlds energy may come from wind turbines by the year 2020 (approx. 1,260,000 MW). This means wider deployment of wind turbines, at lower wind speed sites i.e. close to people & transmission lines. To reduce the transmission cost between production site and customer, onshore installations are still a cheaper solution. One of the biggest barriers for developing onshore turbines is the noise which has a negative impact on people's daily life. Thus, the goal of developing onshore wind turbines is to design silent wind turbines and silent wind farms and at the same time have a good aerodynamic efficiency. Noise emitted from an operating wind turbine can be divided into two parts, mechanical noise and flow induced noise. Mechanical noise can sufficiently be reduced by conventional engineering approaches but flow-induced noise is more complex and need more focus. The noise mechanisms associated with flow-induced noise emission have different sources. These are, inflow turbulence noise, tip noise, laminar boundary layer separation noise, blunt trailing-edge noise (BTE) and for turbulent boundary-layer trailing-edge interaction noise (TBL-TE). Acoustic field measurements within the European research project SIROCCO showed that the TBL-TE noise is the most dominant noise mechanism for modern wind turbines. Thus, accurate prediction and reduction of the TBL-TE noise is the main focus of the acoustics airfoil design methods for wind turbine rotor blade. For developing 'silent' airfoils, a routinely design fast, less expensive and accurate prediction methodology is desired. In this respect, simplified theoretical model would be the first candidate, and therefore the main goal is development of an accurate and efficient noise prediction model for the low noise wind turbine blade design.
Das Projekt "Renewable fuels for advanced powertrains (RENEW)" wird vom Umweltbundesamt gefördert und von Volkswagen AG durchgeführt. Objective: This project aims to develop, assess and train on various production chains for motor vehicle fuels ligno-cellulosic biomass sources will be used as feedstock to produce synthesis gas from which various vehicle fuels can be derived: CH4, methanol/DME, ethanol (thermo-chemical and enzymatic pathway) and a novel biomass-to-liquid (BTL) fuel. The project will develop and evaluate the respective processing technologies with a view to producing cost effective premium fuels for current and future combustion engines from a wide bandwidth of feedstock. Within 4 vertical subprojects, alternative thermo-chemical gasification, enzymatic fuel production and fuel synthesis processes will be considered, while 2 horizontal subprojects are directed towards technology assessment and training. Two pilot-produced fuels (DME and BTL) will be submitted to extensive motor-tests by 4 leading European car manufacturers within this project. Other fuels will be made available for tests in various other European R&D projects. It is envisaged that this project will lead to the introduction of favourably priced biomass-derived fuels for motor vehicles, from 2010 onwards. Apart from achieving scientific and technological results, RENEW has the vision to develop commonly agreed strategic recommendations, based on an understanding among relevant players in industry, agriculture and research concerning the technological and market potential of different bio-fuels and their production technologies. RENEW is novel and hugely important to Europe. It offers major Kyoto Protocol benefits, enhances the sustainability and security of vehicle fuel supply, and has positive Regional socio-economic impacts. RENEW involves 31 partners, including 7 SME, from 9 EU MS and AS countries. The consortium has the necessary 'critical mass' to achieve its goals and develop the technology to commercial stage beyond the end of the project.
Das Projekt "Effectiveness of low emission zones: Large scale analysis of changes in environmental NO2, NO and NOx concentrations in 17 German cities" wird vom Umweltbundesamt gefördert und von Evonik Industries AG durchgeführt. Background: Low Emission Zones (LEZs) are areas or roads where the most polluting vehicles are restricted from entering. The effectiveness of LEZs to lower ambient exposures is under debate. This study focused on LEZs that restricted cars of Euro 1 standard without appropriate retrofitting systems from entering and estimated LEZ effects on NO2, NO, and NOx (=NO2+NO) concentrations. Methods: Continuous half-hour and diffuse sampler 4-week average NO2, NO, and NOx concentrations measured inside and outside LEZs in 17 German cities of 6 federal states (2005-2009) were analysed as matched quadruplets (two pairs of simultaneously measured index values inside LEZ and reference values outside LEZ, one pair measured before and one after introducing LEZs with time differences that equal multiples of 364 days) by multiple linear and log-linear fixed-effects regression modelling (covariables: e.g., wind velocity, amount of precipitation, height of inversion base, school holidays, truck-free periods). Additionally, the continuous half-hour data was collapsed into 4-week averages and pooled with the diffuse sampler data to perform joint analysis. Results: More than 3,000,000 quadruplets of continuous measurements (half-hour averages) were identified at 38 index and 45 reference stations. Pooling with diffuse sampler data from 15 index and 10 reference stations lead to more than 4,000 quadruplets for joint analyses of 4-week averages. Mean LEZ effects on NO2, NO, and NOx concentrations (reductions) were estimated to be at most - 2 microgram/m3 (or - 4 percent). The 4-week averages of NO2 concentrations at index stations after LEZ introduction were 55 microgram/m3 (median and mean values) or 82 microgram/m3 (95th percentile). Conclusion: This is the first study investigating comprehensively the effectiveness of LEZs to reduce NO2, NO, and NOx concentrations controlling for most relevant potential confounders. Our analyses indicate that there is a significant, but rather small reduction of NO2, NO, and NOx concentrations associated with LEZs. Key words: air quality, low emission zone, NO2, NO and NOx, air pollution
Das Projekt "SuMaRio: Nachhaltige Bewirtschaftung von Flussoasen entlang des Tarim Flusses in China - AP 1.2.2 Szenariomanagement (Ökonomie & Ökologie) - AP 5.1.1 Wasserpreisgestaltung - AP 5.1.2 Sozioökonomische Analyse landwirtschaftlicher Produktionssysteme" wird vom Umweltbundesamt gefördert und von Universität Hohenheim, Institut für Landwirtschaftliche Betriebslehre, Fachgebiet Agrarinformatik und Unternehmensführung (410c) durchgeführt. We, the Institute of Farm Management (410c) are responsible for three work packages within SuMaRiO. Our work focuses on analysis and assessment of current and innovative agricultural production systems along the Tarim River at farm and regional levels with special regard to water consumption. To support a sustainable development in the region it is necessary to balance the allocation of water for human consumption and for the maintenance of natural ecosystems. The majority of the population in the Tarim River region still depends on agriculture as their main source of income. To maintain societal harmony and promote human wellbeing a steady increase of incomes of rural households is indispensable. Environmental protection is still not that prominent on the political agenda. To assess the impact of certain policy measures that aim at reducing agricultural water consumption on farm management (and farmers income), the application of farm optimization models is a powerful tool. In that respect the introduction (increase) of water prices on agricultural water usage and farm management practices are tested. Furthermore we are involved in the elaboration of frame-scenarios that build the general research reference for all subprojects of the overall project.
Das Projekt "Handbook for Approval of Hydrogen Refuelling Stations (HYAPPROVAL)" wird vom Umweltbundesamt gefördert und von Ludwig-Bölkow-Systemtechnik GmbH durchgeführt. Objective: HyApproval is a STREP to develop a Handbook (HB) facilitating the approval of hydrogen refuelling sta-tions (HRS). The project will be performed over 24 months by a balanced partnership including 25 partners from industry, SMEs and institutes which ensure the critical mass and required know how for obtaining the identified project goals. Most partners have extensive expertise from HRS projects. Key partners from China/ Japan / USA provide an additional liaison to international regulations, codes & stand ards activities. The project goals are to finalise the HRS technical guideline started under EIHP2 and to contribute to the international standard under development at ISO TC197 and in first line to provide a HB which assists com-panies and organisations i n the implementation and operation of HRS. The HB will be based on best prac-tices reflecting the existing technical know-how and regulatory environment, but also includes the flexibility to allow new technologies and design to be introduced at a later sta ge. In order to meet these goals, best practises will be developed from project experience (CUTE, ECTOS, EIHP1&2, HySafe, CEP, ZERO REGIO) and partner activities. In 5 EU countries (F/D/I/E/NL) and in China, Japan and the USA the HyApproval process wil l include a HB review by country authorities to pursue 'broad agreement' and to define 'approval routes'. After finalising the HB process the developed requirements and procedures to get 'Approval in Principle' shall be suffi-ciently advanced to seek appro val in any European country without major modifications. Not only infra-structure companies, HRS operators/owners and local authorities but also the EC will profit from the HB that is deemed to contribute to the safe implementation of a hydrogen infrastruc ture. The project complies with EU's R&D and energy policies, which aims at the introduction of 5Prozent hydrogen as motor fuel by 2020. The HB will put Europe in a position to maintain and extend its leading position
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