细化搜索
结果 1-10 的 153
Persistent effects of ozone on needle water loss and wettability in Norway spruce.
1990
Barnes J.D. | Eamus D. | Davison A.W. | Ro Poulsen H. | Mortensen L.
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
显示更多 [+] 显示较少 [-]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
显示更多 [+] 显示较少 [-][On-site cleaning of groundwater with various organic pollutants]
1997
Aktor, H. | Oestergaard, H.
[Consumption of pesticides in a municipality]
1997
Marcher, M.B.
[Application of in-situ technique against an inorganic pollution: an example [bioventing]]
1997
Petersen, P.A. | Vestergaard, A.B.
[Correlation between soil stripping and in-situ cleanup]
1997
Knudsen, S. | Aagaard, J.
[Air sparging: soil conditions, control and finishing]
1997
Bull, N.
[Tracing of the source of nickel in groundwater in Roskilde and Storstroems County]
1997
Knudsen, C.
[Experiences with remediation of groundwater from pesticides and organic solvents]
1997
Jensen, C.B. | Harup, F.
