Danube ; Domaine aride ; Domaine semi-aride ; Dégradation des sols ; Désertification ; Hongrie ; Tisza
Degradation processes within subhumid, semi-arid and aridareas are defined as desertification processes to draw attention to the specific dangerous situation in these areas. Hungary signed the Convention on Desertification, as increasing aridity
is a real national danger, especially on the Danube-Tisza interfluve. There are areas in Hungary corresponding to desertification definitions. Thus, desertification research is an important challenge for Hungarian geography. - (AM)
In the arid and semiarid areas of China, human actions play a significant role in desertification processes. The main problems are the reduction of biomass, decline of preferred species and soil erosion induced by overgrazing. The AA. show the land
This survey is limited to 3 themes prevalent in research published in 1996 : land-surface heterogeneity, mesoscale circulations, and the energy budgets and microclimates of 4 particular surface classes (forests, arid and semi-aridareas, urban areas
Paysages urbains. Couches limites stables et phénomènes associés. Environnements arides, semi-arides et saisonnièrement secs. Environnements dominés par la glace et la neige. Echange de vapeur d'eau surface-atmosphère.
Les besoins en agrométéorologie en Afrique aride et semi-aride
Africa ; Agricultural calender ; Agricultural practice ; Agricultural production ; Agroclimatology ; Aridarea ; Research programme ; Semi-aridarea ; Water budget
Afrique ; Agroclimatologie ; Bilan hydrique ; Calendrier agricole ; Domaine aride ; Domaine semi-aride ; Pratique culturale ; Production agricole ; Programme de recherche
Revue des principaux chantiers de l'agroclimatologie en Afrique aride ou semi-aride : sélection des plantes en fonction de leur aptitude à survivre aux aléas climatiques, assistance aux paysans pour l'optimisation des travaux agricoles, organisation
Domaine aride ; Domaine semi-aride ; Granulométrie ; Humidité du sol ; Israël ; Propriétés du sol ; Ruissellement ; Sol ; Versant
The main aim of this study was to analyze the effects of rock fragments in various sizes and positions on arid and semi-arid hillslopes on the topsoil moisture contents from the end of rain events until the end of the dry season. The research
La gestion durable des ressources en eau, dans les zones arides et semi-arides, est un challenge permanent, dont la difficulté s'accroît désormais, du double fait des impacts du changement clima¬tique et d'une demande sociétale en hausse continuelle
Aeolian features ; Aeolian transport ; Aridarea ; Bibliography ; Duricrust ; Dust ; Fluvial hydrology ; Geochemistry ; Model ; Soil properties
Années 2004-2005 ; Bibliographie ; Domaine aride ; Encroûtement ; Eolien ; Géochimie ; Hydrologie fluviale ; Modèle ; Poussière ; Propriétés du sol ; Transport éolien
Le point sur les recherches concernant la géomorphologie en régions arides, parues en 2004 et 2005 : processus éoliens, sédiments géochimiques et sols arides; hydrologie et géomorphologie fluviale en domaine aride; émission, transport et dépôt de
Arid geomorphology : investigating past, present and future changes
Aridarea ; Bibliography ; Dating ; Desertification ; Forecast ; Geomorphology ; Global change ; Model ; Palaeo-environment ; Research ; Thermoluminescence ; Years 2000-2009
The A. focuses on certain pervasive, emerging, or overarching themes in arid geomorphological research, with arid defined broadly to include hyper-arid, semi-arid and dry-subhumid regions as well. 3 themes are studied : 1) reconstructing past
changes : chronologies of arid landscape development (luminescence dating); 2) assessing present changes : the relationship between modelling and field observations; 3) predicting future changes : arid landscape response to twenty-first-century
Public transport provision in sparsely populated aridareas
Accessibilité ; Domaine aride ; Désenclavement ; Géographie de l'Asie ; Israël ; Negev ; Service ; Transit régional ; Transport
regional transit systems in these aridareas are put forward. - (DN)
The article presents the effects of the arid spatial and climatic conditions on transit demand and supply. After examining the service standards required in the sparselands and using the Israeli Negev region as an example, guidelines for developing
The dynamics of soluble salts concentration in the soil was investigated at seven research stations in Israel that represent four climatic regions : Mediterranean, semi-arid, mildly arid and arid. Measurements were taken in different seasons from