خيارات البحث
النتائج 1 - 4 من 4
A global overview of the long-term effects of air pollution on forest trees and ecosystems
2002
Bastrup-Birk, A. (Centre of Forest, Landscape and Planning, Hoersholm (Denmark)) | Kozlov, M. | Thienhoven, M. van
This paper aims to integrate existing information on effects of air pollution on main forest tree species of economic importance, mainly on growth and reproduction. Gaps in knowledge and areas for future research will be identified
اظهر المزيد [+] اقل [-]Diagnosis of pollution effect on Slovak forest ecosystems
2002
Mankovska, B. (Forest Research Institute, Zvolen (Slovak Republic))
Presented paper based on long-term and systematic research of the negative effect of pollutants and of the content of the elements in particular parts of forest environment (the years 1965/2002) proves of the importance, need and justificatin of the research on given subject. Knowing the elemental composition of pollutants as to its quality and quantity is basic precondition with diagnosing the effect of polluted air on forest environment. For the needs of practice three main pollution deposition types (acid, alkaline and ammonia) and 8 subtypes were established. They represent changes of forest ecosystems caused by different substances from pollutants
اظهر المزيد [+] اقل [-][Trials with combined chemical and biological filter for degradation of TCE in groundwater [trichlorethylene]]
2002
Soegaard, E.G. (Aalborg Univ., Esbjerg (Denmark)) | Christensen, S.R.
[Multielement mapping of metalloid pesticide residues in the soil of former plant nursery sites]
2002
Joergensen, N. | Laursen, J. (Kongelige Veterinaer- og Landbohoejskole, Copenhagen (Denmark)) | Pind, N. | Holm, P.E. | Viksna, A.
