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  • Soil degradation in Sardinia. Historical causes and current processes due to anthropogenic pressure.
  • Degradation-Desertification.
  • Use of soil horizons for assessing soil degradation and reconstructing chronology of degradation processes : the case of Mwisanga catchment, Kondoa, central Tanzania
  • 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
  • and depositional zones. The study underscores the importance of being able to reconstruct soil properties of pre-eroded soil profiles with the view to determining erosion units. This will eventually help in developing appropriate land use and conservation
  • Degradation of soil structure by welding. A micromorphological study
  • Agricultural practice ; Agropedology ; Limburg ; Loess ; Micromorphology ; Netherlands (The) ; Soil ; Soil erosion ; Soil properties ; Splash
  • degradation and crust formation are presented including the applicability of the McIntyre model of soil crust formation.
  • In 1985 a plot study was started on sloping cultivated loess soils in South-Limbourg (The Netherlands) to evaluate the effects of various cropping systems of fodder maize on runoff, soil loss and crop yield under natural rainfall. In 1988
  • , in addition a soil micromorphological investigation was undertaken of the soil layer at and immediately below the soil surface on the experimental plots. In this paper the results of the micromorphological analysis of the processes of soil structure
  • Applications of reflective remote sensing for land degradation studies in a Mediterranean environment
  • Ardèche ; France ; Modelling ; Remote sensing ; Rhône-Alpes ; Soil degradation ; Soil erosion
  • 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
  • The relevance of humus forms for land degradation in Mediterranean mountainous areas
  • Catena ; Forest soil ; Humus ; Infiltration ; Lithology ; Mediterranean climate ; Mountain ; Soil ; Soil degradation ; Soil erosion ; Soil properties ; Spain
  • are relevant for the susceptibility of these soils to erosion and degradation.
  • In the Gavarras (NE Spain), a large number of plots on respective schists, leucogranite and granodiorite was studied for their soils and vegetation. Results are discussed, focusing on properties of humus forms and underlying mineral horizons which
  • Estimated Holocene soil carbon-soil degradation in Nevada and Western Utah, USA
  • Altitude ; Carbon ; Climatic variability ; Desertification ; Forecast ; Holocene ; Nevada ; Organic materials ; Palaeo-environment ; Soil degradation ; Soil properties ; United States of America ; Utah
  • There is much interest in predicting future carbon-soil degradation and that occurring today. The AA. consider the National Soil Survey Laboratory data to assess some of the soil carbon degradation in the Great basin and western Utah, and include
  • data on 32 Nevada and Utah soils on Pleistocene geomorphic surfaces at elevations of 973 to 3172 m. They study the correlation of mean annual precipitation (MAP) and mean annual soil temperatures (MAST) with elevation. Increasing the temperature by 3°C
  • The use of cesium-137 measurements of soil erosion and farmers' perception to indicate land degradation amongst shifting cultivators in northern Thailand
  • Agriculture ; Geochemistry ; Perception ; Slope ; Soil degradation ; Soil erosion ; Soil properties ; Soil science ; Thailand
  • Erosion on steep slopes in Chiang Rai province was measured for the 1963-1991 period. Not all of the erosion was from cultivation. And erosion may not be the most relevant factor in reducing soil fertility. - (DWG)
  • Kastanozems in the Otjiwarongo region (Namibia) : pedogenesis, associated soils, evidence for landscape degradation.
  • Brown soil ; Namibia ; Soil degradation ; Soil erosion ; Soil properties ; Soil science ; Vertisol
  • Plant succession and soil degradation in desertified areas (Fuerteventura, Canary Islands, Spain)
  • Arid area ; Canary Islands ; Desertification ; Human impact ; Multivariate analysis ; Plant succession ; Soil ; Soil degradation ; Soil properties ; Vegetation
  • The aim of this study is to evaluate the effect of the transformation of the original tabaiba scrub into serial substitution communities (shrub steppe and halophile scrub) on present soil quality in a particular setting, Fuerteventura, where soil
  • Influence of soil properties on the aggregation of some Mediterranean soils and the use of aggregate size and stability as land degradation indicators
  • Soil aggregation in arid and semi-arid environments
  • Aggregate ; Alicante ; Clay mineral ; Grain size distribution ; Indicator ; Mediterranean area ; Organic materials ; Soil ; Soil degradation ; Soil erosion ; Soil properties ; Soil water ; Spain
  • Soil aggregation in relation to other soil properties was studied along a climatological transect in the Southeast of Spain. Three sites were selected along this transect ranging from semiarid to subhumid climatological conditions. The aggregate
  • size distribution, the macro and microaggregate stability of the superficial soil horizon and their relations with other soil properties were analysed. A general conceptual scheme of associations between aggregate size distribution, water-stable
  • Land degradation and the coastal environment of Nigeria
  • 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
  • Well drained soils with a degraded Bt horizon in loess deposits in Belgium| relationship with paleoperiglacial processes
  • Belgique ; Fragipan ; Géographie physique ; Horizon Bt dégradé ; Héritage périglaciaire ; Loess ; Paléopériglaciaire ; Pédogenèse ; Périglaciaire ; Sol ; Zone tempérée
  • The presence of a compact fragipan horizon help to explain the association of the degradation of the soil and the permeability of the substratum. This is possible on basis of the hypothesis which links the fragipan development to ice segregation
  • in permafrost aggrading in an environment with relatively high water supply from the subsoil. The degree of degradation, and its distribution in the landscape, can be explained in a much more satisfactory way by these processes associated with a periglacial
  • Deriving indicators of soil degradation from soil aggregation studies in southeastern Spain and southern France
  • Aggregate ; Ecosystem ; Erodibility ; France ; Infiltration ; Land use ; Mediterranean area ; Murcia ; Semi-arid area ; Soil ; Soil degradation ; Soil properties ; Spain ; Vegetation
  • Soil degradation is perceived as a major threat in the Mediterranean region due to changes in land-use and possible future climate change. In this paper, an attempt is made to give an overview of soil aggregation from different semi-natural
  • or abandoned sites, and to assess whether soil aggregation might be considered as a key-indicator for up-scaling and of sensitivity to environmental changes.
  • Influence of topographic and edaphic factors on vulnerability to soil degradation due to cattle grazing in humid tropical mountains in northern Honduras
  • Agropedology ; Cattle ; Honduras ; Mountain ; Pastureland ; Slope gradient ; Soil degradation ; Soil properties ; Tropical zone ; Vulnerability
  • The use of sloping areas for cattle grazing may lead to significant soil degradation and therefore the AA. examined the influence of the slope gradient on soil degradation in pastures in a humid tropical mountainous area in northern Honduras
  • as well as visual indicators of soil and vegetation degradation. There is a significant positive correlation between the bulk density as a proxy for soil degradation and slope gradient. Furthermore, it was found that when soils are water-saturated grazing
  • . Understanding this relationship permits estimates of the physical carrying capacity of the soil, which in turn may help to improve livestock use within the study area. Variables examined included soil bulk density, texture, organic matter content and consistency
  • leads to severe degradation.
  • Development of a soil degradation assessment tool for organic olive groves in southern Spain
  • Agricultural land use ; Agropedology ; Andalusia ; Environmental management ; Index ; Methodology ; Olive tree ; Soil degradation ; Soil erosion ; Soil properties ; Spain
  • Forty-six organic olive orchards under different soil management systems were evaluated in the province of Córdoba (southern Spain) to assess the state of their soil properties and the degree of degradation of their topsoil, and the possibilities
  • for monitoring any soil degradation risk. Three soil degradation indexes were obtained through a principal component analysis of the soil properties analyzed. Two of the indexes are basically integrative ones that can be used in relatively large surveys
  • considering a large number of soil properties. The third index developed used only three soil properties, organic C, water stable macroaggregates, and extractable P, and has the potential to be used as a relatively easy and inexpensive screening test of soil
  • degradation for organic olive farms in the area.
  • Soil organic matter and land degradation in semi-arid area, Israel
  • Arid area ; Israel ; Land use ; Organic materials ; Precipitation ; Semi-arid area ; Soil erosion ; Soil properties ; Temperature
  • from these characteristics as indication of soil structure deterioration and land degradation.
  • Soil organic matter (SOM) was monitored at 5 sites along a climatic transect extending from the Judean Mountains to the Dead Sea. The A. aims at analyzing the typical characteristics of SOM in different climatic regions, and analyzing deviations
  • Environmental change in the Kalahari : integrated land degradation studies for nonequilibrium dryland environments
  • Arid area ; Botswana ; Ecosystem ; Hydrochemistry ; Kalahari ; Model ; Nutrient ; Over-grazing ; Pastoral ; Scrub ; Soil degradation ; Soil moisture ; Soil water
  • 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
  • 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
  • nutrient avaibility. They present a model of ecosystem dynamics that does not display bush encroachment as a definite form of land degradation.
  • Soil degradation - diagnosis, appraisal and reversing measures
  • Agricultural land use ; Concept ; Desertification ; Land use ; Landslide ; Salinisation ; Soil ; Soil degradation ; Soil erosion ; Soil properties ; Water erosion ; Wind erosion
  • Part I of this volume I with 6 chapters : soil functions and land quality indicators; land resources information systems for decision-making; soil alteration by climate change; water and wind erosion; humus degradation and nutrient depletion
  • An assessment of land degradation in the Northern Province from satellite remote sensing and community perception
  • 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)
  • Measures to prevent degradation of the soils of Russia
  • Arable land ; Russia ; Soil ; Soil degradation ; Soil pollution