DIGITALNA ARHIVA ŠUMARSKOG LISTA
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ŠUMARSKI LIST 6-8/1989 str. 145     <-- 145 -->        PDF

Liljelund, J-E., Tors lesson, P. (1988): Critical Loads of nitrogen with
regards to effects on plani composition. Critical Loads for Sulphur and
Nitrogen, UN-ECE and NCM Workshop, 363—374.


Rosen , K. (1988): Effects of biomass accumulation and forestry on nitrogen
in forest ecosystems. Critical Loads for Sulphur and Nitrogen, UN-ECE and
NCM Workshop, 269—294.


Svedrup, H., Warfvinge, P. G. (1988): Assessment of critical loads of acid
deposition on forest soils. Critical Loads for Sulphur and Nitrogen, UNECE
and NCM Workshop, 81—130.


Critical Values of Loading with Sulphur and Nitrogen


Summary


Load limits for sulphur and nitrogen are given on the basis of investigation
results obtained in some of the most developed countries (Sweden, German Federal
Republic, Netherlands, Great Britain, etc.) and the results are adapted to
their conditions. However, the proposed classification should be thoroughly tested
on the large number of different ecosystems and in more countries. For this
purpose it will be necessary to realise a special programme of investigation in
Yugoslavia, and to expand and adjust it to our conditions. At the same time it
is necessary to join in relevant international research projects.


Considerable efforts should be made to improve and standardize methods
for determination of total, particularly dry, deposits. The proposed limit values
constitute a solid basis for further work on the improvement of strategy for
controlling the loading of forest and other ecosystems of sulphur and nitrogen
deposits.