Ecosystem CO2 exchange from the Sahel to the Arctic - in a global change perspective
Afrique ; Changement global ; Cycle du carbone ; Dioxyde de carbone ; Domaine aride ; Ecosystème ; Espagne ; Groenland ; Modèle ; Photosynthèse ; Réchauffement climatique ; Sahel ; Savane ; Suède ; Toundra ; Zone climatique ; Zone froide
Africa ; Arid area ; Carbon cycle ; Carbon dioxide ; Climatic warming ; Climatic zone ; Cold area ; Ecosystem ; Global change ; Greenland ; Model ; Photosynthesis ; Sahel ; Savanna ; Spain ; Sweden ; Tundra
function under marginal conditions, limited either by heat or water supply. By combining eddy covariance measurements and CO2 exchange modelling, the sensitivity of these systems related to temperature change is evaluated.
Settlement and changing land use in the Chitwan district of Nepal
This paper focuses on how population growth and the process of continued migration from the Hill Region and settlement in the Terai Region of Nepal result in considerable changes in land use and fragmentation of land-holdings. It is argued
in Nepal should extend its strong focus from the Hill Region to include the increasing social and environmental changes of the Terai Region.
Population and land use changes in the central highland Province of Dak Lak, Vietnam
resource database, a classification of the land use changes in the period 1979-1989 and 1994 was conducted using air photos and satellite images. Finally the land use change was analysed using a geographical information system. The produced maps create
spatiales pour la localisation d'exploitations agricoles en pays boisé. L'élevage du mouton dans les îles Féroé : tradition, loisir et dilemme culturel. Analyse des changements dans l'utilisation agricole du sol au Danemark, période 1950-97. Paysage et
propriété foncière à l'est et à l'ouest du Sound. Changements dans les systèmes de planification urbaine. Stratégies évolutives pour les cultures itinérantes. Relations entre habitat et économie de subsistance dans les régions arctiques. Etude d'une
This article illustrates that the study of landscape changes requires more than land use statistics; a useful approach must be based on spatial sampling. It suggests that tracing the use of a specific unit of land through history can be an efficient