خيارات البحث
النتائج 1 - 10 من 21
Throughfall and canopy interactions in five different tree species in Denmark
2002
Hansen, K. | Bastrup-Birk, A. | Hovmand, M.F. (Danish Forest and Landscape Research Institute, Hoersholm (Denmark))
Acidification of forest soils is dependent on the tree species for several reasons. One reason is that the deposition to deciduous tree species normally is considered lower than to coniferous tree species. This study therefore considers the differences in deposition to different tree species in Denmark. Canopy throughfall and precipitation were collected during the period 1986 to 1999 at three trial species experimental sites in Denmark. At each site the species Norway spruce, sitka spruce, Douglas fir, beech and oak were studied. The paper presents and discusses the differences in canopy exchange processes and dry deposition in different tree species and at different locations
اظهر المزيد [+] اقل [-]Forms - an integrated forest monitoring system in Denmark
2002
Bastrup-Birk, A. | Johannsen, V.K. (Centre of Forest, Landscape and Planning, Hoersholm (Denmark))
A FORest Monitoring System (FORMS) has been implemented in Denmark in order to gain and deliver knowledge and information for operational and strategic decisions concerning nature and environment. FORMS integrate four national monitoring programmes. Forest condition monitoring is performed on 52 permanent plots distributed on a 16 x 16 km grid. FORMS gives a systematic and representative assessment of the resources in and development of the forests in Denmark, includes the monitoring of important processes in the forest ecosystem and follows the use of forest for recreational purposes
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.
[Pilot study with stimulated reductive dechlorination adding HRC (TM) Jaegersborg Alle, Gentofte [Hydrogen Release Compound]]
2002
Jacobsen, T.H. | Mossing, C. (Hedeselskabet, Viborg (Denmark))
Xenobiotic organic compounds in wastewater: a matter of concern?
2002
Eriksson, E. | Baun, A. | Henze, M. | Ledin, A. (Danmarks Tekniske Univ., Lyngby (Denmark))
[Leaching of glyphosate estimated from three field trials]
2002
Kjaer, J. | Ullum, M. | Lindhardt, B. | Olsen, P. | Joergensen, J.O.
[Importance of geochemical and hydraulic parameters for natural degradation of benzene pollution in groundwater]
2002
Jensen, I.H. (Danmarks Tekniske Univ., Lyngby (Denmark))
[Map of net precipitation: an example of detailed regional net precipitation mapping]
2002
Thirup, C.
[Nickel problems in the groundwater in Roskilde county]
2002
Olsen, M., Hartelius, E. | Pratt, A. | Terkelsen, M. | Aktor, H.
[Leaching of wastewater in the countryside: environmental consequences for the groundwater and suggestions for future conditions for leaching]
2002
Ludvigsen, L. | Jensen, T.F. | Lund, E.
