The aim of this book is to investigate the role of remote sensing in understanding and modelling land degradation processes. The research was carried out in the southern part of Ardèche province in France. Several degradation features are found
Land degradation and the coastal environment of Nigeria
Action anthropique ; Aménagement régional ; Dégradation dessols ; Exploitation pétrolière ; Littoral ; Nigéria ; Utilisation du sol
Coastal environment ; Human impact ; Land use ; Nigeria ; Oil industry ; Regional planning ; Soil degradation
This paper uses primary and secondary data sources to describe cases of land degradation based on the morphological units of Nigeria's shoreline. Anthropogenic influences accelerate land degradation along the coastline hence, the need
Use of soil horizons for assessing soil degradation and reconstructing chronology of degradation processes : the case of Mwisanga catchment, Kondoa, central Tanzania
Catena ; Conservation dessols ; Dégradation dessols ; Erosion dessols ; Photo-interprétation ; Propriétés du sol ; Ravinement ; Sol ; Tanzanie ; Typologie ; Utilisation du sol ; Zone intertropicale
Catena ; Gully erosion ; Land use ; Photointerpretation ; Soil ; Soil conservation ; Soil degradation ; Soil erosion ; Soil properties ; Tanzania ; Tropical zone ; Typology
This paper analyses the use of soil horizons for mapping soil degradation intensity and reconstructing chronology of degradation processes. Through Pedogenetic Baseline Approach, the catchment was classified into 2 categories : the erosional
Action anthropique ; Dégradation dessols ; Sol ; Taxonomie
Human impact ; Soil ; Soil degradation ; Taxonomy
Méthodes et principes de la classification dessols, solsdégradés à différents degrés par l'activité humaine. Schéma de classification des unités taxonomiques les plus importantes (familles, classes et sous-classes) dessols transformés par
l'action anthropique et des formations superficielles à l'aspect desols. Un bref diagnostic de quelques taxons.
Soil degradation in Sardinia - Historical causes and current processes due to anthropogenic pressure.
Degradation - Desertifikation
Agriculture ; Climat ; Dégradation dessols ; Italie ; Mine ; Salinisation ; Sardegna ; Urbanisation ; Utilisation du sol
Agriculture ; Climate ; Italy ; Land use ; Mine ; Salinisation ; Sardegna ; Soil degradation ; Urbanization
Les AA. étudient les impacts des activités anthropiques sur la dégradation dessols en Sardaigne. L'utilisation du sol dans l'agriculture et l'industrie extractive ainsi que l'étalement urbain accentuent l'érosion et ont des conséquences négatives
pour l'environnement. A cela s'ajoutent le rôle du climat et la salinisation des aquifères.
An assessment of land degradation in the Northern Province from satellite remote sensing and community perception
Afrique du Sud ; Biomasse ; Dégradation dessols ; Désertification ; Erosion dessols ; Indice de végétation ; LANDSAT ; MSS ; Northern Transvaal ; Perception ; Télédétection ; Végétation
Biomass ; Desertification ; LANDSAT ; MSS ; Perception ; Remote sensing ; Soil degradation ; Soil erosion ; South Africa ; Vegetation ; Vegetation index
The assessment of land degradation in developing rural areas of South Africa is often hampered by a lack of reliable data. Remote sensing data offers a reliable source of information. In a case study in the Sekgosese district in northern South
Africa, the findings coincided with local community perceptions, although most people were unaware of the causes and effects of land degradation. - (AJC)
Arid area ; Danube ; Desertification ; Hungary ; Semi-arid area ; Soil degradation
Degradation processes within subhumid, semi-arid and arid areas 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
Measures to prevent degradation of the soils of Russia
Dégradation dessols ; Pollution du sol ; Russie ; Sol ; Terre arable
Arable land ; Russia ; Soil ; Soil degradation ; Soil pollution
Description de état qualitatif des terres et dessols en Russie. On note que la perte croissante en terres de valeur, l'épuisement continu dessols, la pollution des terres, le développement de l'érosion, la désertification et autres processus
menacent la sécurité nationale. Des mesures de première urgence pour la prévention de la dégradation dessols sont recommandées. Article traduit du russe, extrait de: Počvovedenie, 1994, n0 10, pp. 5-9.
Les AA. livrent une étude pédologique concernant la formation du kastanozem et dessols noirs associés comme les vertisols et les calcisols. Leur objectif est d'étudier les processus d'érosion dessols dans la région d'Otjiwarongo en Namibie.
Interrelationships between land abandonment and land degradation: a case from the Ecuadorian Andes
Andes ; Dégradation dessols ; Equateur ; Erosion dessols ; Expérimentation ; Jachère ; Montagne ; Pâturage ; Ruissellement ; Simulation de pluie ; Utilisation du sol ; Zone intertropicale
Andes ; Ecuador ; Experimentation ; Fallow land ; Land use ; Mountain ; Pastureland ; Rainfall simulation ; Rill wash ; Soil degradation ; Soil erosion ; Tropical zone
Further evidence provided of land degradation resulting from land abandonment in the Ecuadorian Andes where runoff and erosion rates are significantly higher than those of lands under cultivation. - (DWG)
Land degradation in the Yallahs Basin, Jamaica : historical notes and contemporary observations
Agropédologie ; Amélioration ; Bassin-versant ; Erosion dessols ; Géographie de l'Amérique ; Jamaïque ; Mouvement de masse ; Utilisation du sol ; Versant ; Zone intertropicale
Etude de la dégradation dessols dans le bassin-versant de la rivière Yallahs. Analyse de la persistance actuelle de l'érosion dessols et proposition de mesures d'amélioration.
The AA. hypothesize that environmental degradation had a major effect on grain production in many of China's agricultural areas. A nationwide fixed effect grain-yield function is introduced which incorporates both traditional input variables
and an additional set of variables that reflect trends in environmental degradation at the provincial level. The model is estimated using time-series data for the period from 1978 to 1980.
Afforestation ; China ; Cultivated land ; Desertification ; Environment ; Environmental management ; Nutrient ; Pollution ; Salinisation ; Soil degradation ; Soil erosion ; Statistics ; Water erosion ; Water resources ; Wind erosion
Following the discussion of the causes and disasters of land degradation, this paper presents the achievements gained in prevention and control of land degradation since 1949. The several control strategic measures in combating land degradation
Environmental change in the Kalahari : integrated land degradation studies for nonequilibrium dryland environments
Botswana ; Domaine aride ; Dégradation dessols ; Eau du sol ; Ecosystème ; Formation arbustive ; Humidité du sol ; Hydrochimie ; Kalahari ; Modèle ; Nutriment ; Pastoral ; Surpâturage
Arid area ; Botswana ; Ecosystem ; Hydrochemistry ; Kalahari ; Model ; Nutrient ; Over-grazing ; Pastoral ; Scrub ; Soil degradation ; Soil moisture ; Soil water
Patterns of ecological change, notably increased bush dominance, have been linked to increased cattle-grazing intensity, but it remains contentious whether these changes represent land degradation. Given the inherent ecological variability
of drylands, the AA. argue that degradation assessments should be based, not on ecological observations alone, but on the study of long-term changes in pastoral production figures and on changes in the ecologically determining factors of soil water and soil
nutrient avaibility. They present a model of ecosystem dynamics that does not display bush encroachment as a definite form of land degradation.
Ancient and modern perspectives on land degradation
Geomorphology and land degradation. Special issue
Changement climatique ; Dégradation dessols ; Erosion dessols ; Glissement de terrain ; Géomorphologie appliquée ; Risque ; Utilisation du sol ; Zone intertropicale
Applied geomorphology ; Climatic change ; Land use ; Landslide ; Risk ; Soil degradation ; Soil erosion ; Tropical zone
Introduction à ce numéro spécial concernant la dégradation dessols, et constitué de 6 articles présentés lors de la Conférence Régionale de Géomorphologie de l'Association Internationale des Géomorphologues, à Mexico, du 27 octobre au 2 novembre
2003. Mise en évidence des relations entre dégradation dessols et changements d'utilisation dessols.
Crossing the thresholds : human ecology and historical patterns of landscape degradation
Action anthropique ; Dégradation de l'environnement ; Ecologie humaine ; Erosion dessols ; Géographie historique ; Islande ; Modélisation ; Politique agricole commune ; Surpâturage ; Téphrochronologie ; Utilisation agricole du sol
Agricultural land use ; Common agricultural policy ; Environmental degradation ; Historical geography ; Human ecology ; Human impact ; Iceland ; Modelling ; Over-grazing ; Soil erosion ; Tephrochronology
The AA. assess the extent to which common land domestic grazing pressures were the primary external force causing soil erosion and land degradation during the period of occupation from ca. 874 AD in Southern Iceland. They first provide field
observation of soil erosion, temporally defined by tephrochronology, to highlight the extent of land degradation during this period. The tragedy of the commons explanation of degradation is then assessed by evaluating historic documentary sources