期刊名称：Condition of Forests in Europe / Waldzustand in Europa
印刷版ISSN：1020-587X
出版年度：2007
卷号：1
页码：16-16
出版社：United Nations Economic Commission for Europe
摘要：Nitrogen deposition is ·· generally higher on plots in Central
Europe compared to Northern and Southern regions. This
leads to the exceedance of critical loads on two thirds of
the plots mainly located in central Europe. Nitrogen deposition
and the resulting nitrogen enrichment in the soil
thus remain a widespread threat. Studies are based on
nearly 200 monitoring plots.
··Model calculations show that on nearly 60 % of the plots,
reduction of nitrogen deposition is needed in the coming
years in order to be below critical loads. Between 1999
and 2004, however, nitrogen inputs remained unchanged
on around 80 % of the plots.
··Critical loads for acidity were only exceeded on one third
of the plots. However, it is predicted that even in 2050 the
soil acidity status will not reach pre-industrialisation
levels on most of the plots.
··The reduction of sulphur inputs and soil acidification
show some real success of clean air policies. Plots with
comparatively low sulphur inputs are mainly located in
central Europe, in the far North and South-West of the
Continent.
