Air Pollution: Dimensions, Trends and Interactions with a Forest EcosystemSpringer Berlin Heidelberg, 20 feb 1997 - 178 pagine In the early 1980s, forest decline became a matter of public and scientific concern when forest stands with Norway spruce (Picea abies [L. ] Karst. ) showed evident damage on a large geographical scale throughout Europe. The causes of the observed symptoms could not be elucidated on the basis of the state of knowledge at that time. Therefore, several research projects were launched both in Germany and in some other countries in order to identify the relevant pathogenic factors. In 1985, the Federal Ministry for Research and Technology decided to include the site "Postturm", forest district Farchau/Ratzeburg, in the spon sorship of the research on forest decline as a site typical for lowlands and a sphere of anthropogenic urban influence. The investigation area is situated about 40 krn east-northeast of the city of Hamburg. Since spruce trees in particular showed severe decline, emphasis was laid on this species. The programme started in 1986 and extended to 1992, with some activities con tinuing beyond this time. Working groups from 13 institutions took part in the overall project. |
Altre edizioni - Visualizza tutto
Air Pollution: Dimensions, Trends and Interactions with a Forest Ecosystem Walfried Michaelis Anteprima limitata - 2012 |
Air Pollution: Dimensions, Trends and Interactions with a Forest Ecosystem Walfried Michaelis Anteprima non disponibile - 2011 |
Parole e frasi comuni
air pollution amount of precipitation annual mean values atmosphärischer atmospheric pollutants Bauch J eds Chap CO₂ concentration crown compartment damage class decreasing deposition of trace deposition velocity determined dry deposition ecosystem element content emission environmental Fachhochschule Lübeck Fichten forest decline forest ecosystem Forschungsprogramm Waldschäden Forstamt Farchau/Ratzeburg gases GKSS Forschungszentrum Geesthacht gradient Hahnheide Hamburg heavy metal horizon impactor Jülich Lange OL long-term mean Luftverunreinigungen und Waldschäden maxima Measuring period 1987 ments meteorological mg/m²d Michaelis W eds needles nitrogen oxides Norway spruce ozone particulates Pellworm Pepelnik Picea abies plotted Prange present study Rademacher rainfall rainwater roots samples Schleswig-Holstein Schönburg Schwermetallen seasonal variation Sect SO₂ soil solution Standort Postturm Stößel RP sulphur dioxide Table temporal throughfall tion total-reflection X-ray fluorescence trace elements trees trend TXRF Ulrich Untersuchungen Waldschäden am Standort wet deposition wind direction Winter Spring X-ray fluorescence µg/g µg/m²s µg/m³