Time filter

Source Type

The agricultural irrigation has led to the development of a highly specialized agribusiness. The water supply reaches its limits in some regions due to the requirements of the Water Framework Directive. The demand for water by agriculture will increase further. In the project "AQUARIUS - Smoothing clever ways for water!" recommendations for dealing with scarce groundwater were conceived. Source

Reactive atmospheric nitrogen affects sensitive ecosystems such as forests in many respects. Forests in a region of intensive agriculture (where critical loads have been exceeded significantly) that have been exposed to ammonia in the vicinity of animal houses for a long time were selected for an investigation of potential dose response relationships. In all, 60 locations were investigated experimentally with respect to effects on Nmin pools, C/N ratios in the humus layer, nutrient element concentrations in leaves and nutrition indicator values in the ground vegetation. These entities correlated well with the additional load. For other entities (total N pool of the humus layer, soil and humus layer pH, base saturation, tree vitality) no or less significant statistical relations could be identified. Additional loads exceeding 5 kg ha-1 a-1 resulted in a significant increase of N concentrations in pine needles. The composition of the ground vegetation may be affected by even smaller additional loads. On the other hand, damage to trees caused by N occurred with additional inputs above 50 kg ha-1 a -1. The thresholds for effects of additional N inputs of 5 kg ha -1 a-1 to 50 kg ha-1 a-1 agree with those mentioned in the LAI guidelines for minor damage and the highest criterion load for forests. Source

Intensive animal production implies NH3 emissions that result in unwanted effects on soils and vegetation. Hence, any authorization of erection or extension of animal houses presupposes an assessment of existing N loads and an estimate of potential future loads. Due to the costs involved, this is achieved by application of models. This work compares measured and modelled nitrogen loads in a region with high animal densities. In parts, the results differ considerably. • NH3 concentrations measured in the proximity of sources and the additional loads derived deviate from those obtained from model calculations using the German standard procedure (TA Luft). • The additional N depositions derived from the modelled concentrations using TA Luft agree quite well with the measured additional N throughfall fluxes. Additional depositions modelled using the LAI procedure are apparently far too large. • The German Federal Environment Agency (UBA) provides data for background N depositions (MAPESI). These data exceed measured throughfall N by far. The differences cannot be explained, even if one considers the uncertainties involved. • Modelled depositions are based on assumed deposition velocities. The comparison between measured additional throughfall N and modelled additional depositions suggests that the deposition velocity proposed in TA Luft (1.0 cm s') slightly underestimates the N input in the region considered, whereas the values assumed by LAI (2.0 cm s1) definitely overestimates those inputs. Source

Mohr K.,Landwirtschaftskammer Niedersachsen
Gefahrstoffe Reinhaltung der Luft | Year: 2014

Biomonitoring with epigaecic mosses provide detailed information about the extent and spatial distribution of air pollution brought by reactive nitrogen species, e.g., NOx and NHy, which have become a significant air pollutant in Europe. The biomonitoring of nitrogen requires enhanced methodical demands regarding sampling and choice of suitable moss species. Particularly in polluted regions, the effect of canopy drip from higher trees could strongly affect mosses in the adjacent open land. Implementing an optimized method, the planned European wide moos campaign in 2015/2016 will disclose the transboundary distribution of the nitrogen deposition and its development in many parts of Europe, especially since West and Central European countries, including Germany, additionally will participate. Source

Agency: Cordis | Branch: H2020 | Program: CSA | Phase: LCE-14-2014 | Award Amount: 1.83M | Year: 2015

The aim of greenGain is to strengthen the energy use of regional and local biomass from the maintenance of areas and landscape elements, which is performed in the public interest. The scope of the biomass used, will be any material predominantly produced from nature conservation and landscape management, but not from energy-crops. The main target groups are regional and local players, who are responsible for maintenance and conservation work and for the biomass residue management in their regions. Moreover, the focus will be on service providers - including farmers and forest owners, their associations, NGOs and energy providers and consumers. The project will show strategies to build up reliable knowledge on local availability of these feedstocks and know-how on issues from logistics to storage and sustainable conversion pathways for the transformation of these feedstocks to renewable energy (heat and energy products). Furthermore political, legal and environmental aspects will be addressed in model regions. Awareness raising, governance and public acceptance actions will be focussed on. General guidelines will be prepared to guarantee a wide dissemination to other regions in the EU. The regional partners will be actively supported by Technical Partners for the project measures development and implementation. As a CSA, the project focal point will be the exchange between the model regions and other similar relevant players in the EU, by good practice exchange, a topic-specific website, several workshops and educational site visits in different regions as well as other standard public relations activities. The project team is carefully balanced between technical and scientific organisations and local demand side oriented players. Regions in northern Europe with a wide knowledge in this field are cooperating with European (south-west, middle, east) regions, having an untapped potential, that can be accessed through efficient knowledge transfer.

Discover hidden collaborations