Two mid-Holocene millenia of swamp forest in the Rhine/Meuse deltaic plain
The paleoenvironmental evolution of a Dutch deltaic swamp forest area during the mid-Holocene was strongly governed by a general rise of water level (bound to postglacial sea-level rise) and by fluctuations in this water-level rise. A phasing
of this 2.000 years period shows alternation of closed swamp forest on the one hand, and (fluvio-) lacustrine environment with swamp forest islands on the other. The refined scale of investigation permits bird's-view landscape reconstructions. These also show
Streambank contribution to the sediment budget of a forest stream.
The primary aim of this thesis is the construction of a sediment budget for a small forested catchment, special emphasis being given to the contribution of streambank erosion. The study area forms part of the Keuper region of Central Luxemburg. (AIS).
Les changements du taux d'érosion des sols dans les bassins-versants lacustres peuvent être identifiés à partir des changements des taux d'accumulation sédimentaire dans les lacs. Des sites forestés du Galloway sont comparés avec des sites non
forestés. Les bassins versants non forestés ont des taux d'accumulation lents et constants, tandis que les lacs récemment forestés ont des taux d'accumulations qui suivent leur évolution. Au Loch Grannoch le taux d'accumulation sédimentaire va de 0,1 cm
Analyse des correspondances ; Analyse multivariée ; Bassin-versant ; Cartographie thématique ; Débit ; England ; Géographie de l'Europe ; Hygrométrie ; Lande ; New Forest ; Royaume-Uni ; Sol ; Végétation
Detrended correspondence analysis is applied to information on vegetation composition for the heathland zone of a New Forest catchment. A map of runoff contributing areas is constructed from a soil moisture related gradient in the vegetation data
The A. divides the following types : a) low and high flood-plain| b) loess plains with chernozem soil| c) sandy regions (once covered with forest-mosaics)| d) fans along the edges of basin (originally agricultural regions). The evaluation gives base