The NITREX project (nitrogen saturation experiments)Funded under: FP3-ENV 1C
The NITREX project investigates the role of nitrate and ammonium in acidification of coniferous forest ecosystems across a pollution gradient in northern and central Europe. Nitrogen deposition is experimentally changed to entire forest ecosystems at seven sites; nitrogen addition at sites of relatively low present-day deposition and nitrogen removal by roofs at sites with high present-day deposition. Ecosystem input-output budgets and each of the major components of the ecosystem are investigated (water, soil, vegetation, fauna) and integrated at two levels: (i) by studying the transfer of nitrogen within the entire ecosystem by means of 15N tracer studies and nitrogen cycling models; (ii) by studying the response to treatments among the same components in different ecosystems in the network (cross-site comparisons). The first phase of NITREX (1991-93) involves 12 research institutions in 6 nations. The individual sites and investigations in NITREX are described and preliminary results to date are summarised.
Bibliographic Reference: EUR 14319 EN (1991) 102 pp.
Availability: Available from P Mathy, CEC, DG XII, 200 rue de la Loi, B-1049 Bruxelles (BE)
ISBN: ISBN 2-87263-077-5
Record Number: 199310464 / Last updated on: 1994-11-29
Original language: en
Available languages: en