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Portail d'information géographique

Résultats de la recherche (8 résultats)

A decade of tree-line monitoring in the southern Swedish Scandes in Climatological extremes in the mountains, Physical background, geomorphological and ecological consequences.

A decade of tree-line monitoring in the southern Swedish Scandes in Climatological extremes in the mountains, Physical background, geomorphological and ecological consequences.
Results from long-term tree-line monitoring, based on repeat photography from fixed photopoints, are presented. The tree-line studied is a broad ecotone with sparse and mixed populations of Betula pubescens ssp. tortuosa, Picea abies and Pinus

Avohakkuualueen supan lämpoolojen vaikutus puunkasvuun Lammin Kilparistillä (The impact of the microclimate on tree growth in a kettle hole in a deforested area in Lammi, southern Finland)

Avohakkuualueen supan lämpoolojen vaikutus puunkasvuun Lammin Kilparistillä (The impact of the microclimate on tree growth in a kettle hole in a deforested area in Lammi, southern Finland)
branches of the spruces growing in the lower parts of the kettle hole, and smaller trees were totally frozen. Tree growth increased in the upper slopes of the kettle hole, where the trees have survived the radiation shock following the deforestation.

Tree story biomass in Lowland forests in South Moravia

Tree story biomass in Lowland forests in South Moravia

La géothermie en Hainaut et le sondage de Ghlin (Mons, Belgique)

In the Mons Basin, artesian hot waters (66 to 73C) sprang up from tree wells recently drilled. These waters arise from large cracks and cavities opened in Late Visean limestones and evaporite salts, and they are closely linked with fallen

Vlijanie Pistacia vera na raspredelenie atmosfernyh osadkov. (Influence du Pistacia vera sur la répartition des précipitations atmosphériques)

Solid precipitation gains soil surface in more abundant quantity. Old trunks are previous to 54 or 69 % precipitation in leafless state and to about 46-57 % when ones are covered by leaves. Trees canopy catch 4 % of annual precipitation or less. (Ed.).

Neuere Funde des Weichselspätglazials in Schleswig-Holstein. (Some new findings of late Glacial sections in Schleswig-Holstein)

of Betula pollen (tree birches). Below this a less marked Meiendorf-Interstadial is characterized by maxima of Betula nana and Hippophae.

Vlijanie lesnyh nasazdenij na stok i kacestvo vody malyh rek. (Influence des plantations forestières sur l'écoulement et la qualité de l'eau des petites rivières)

The impact of forests on the overland and base flow is considered, and their role in preserving small rivers from pollution and from becoming shallow. It is shown that trees and shrubs prevent the banks from abrasion and erosion, and also exert

Prime applicazioni di un modello econometrico a più stadi per la costruzione di carte relative alla classificazione di unità territoriali secondo il grado di sviluppo economico

d'extraire le Minimum Spanning Tree, on a obtenu une classification hiérarchique des différentes unités territoriales. (UF).