Automorphic saline soils in Israel in Aridic soils and geomorphic processes.
Domaine aride ; Géographie physique ; Israël ; Sol ; Sol salin
All soils in the desertic regions of Israel, south of the 220 mm precipitation isohyet, are saline and gypsiferous. There is a good correlation betweeen salt distribution and the stability and age of the pedomorphic surfaces, which supports
the conclusion that the major sources of the salts are airborne ones blown in over a long period of time. Detailed salt profile data of six characteristic stable soils of the desert and desert fringe areas indicate that salinity increases with aridity. Depth
Nitrogen mineralization of agroforestry tree mulches under saline soil conditions
Agricultural technique ; Agroforestry ; Agropedology ; Arid area ; Experimentation ; Kenya ; Nitrogen ; Salinity ; Semi-arid area ; Soil properties
Laboratory incubation experiments were conducted to study the effects of mulch incorporations of Leucaena leucocephala, Gliricidia sepium, Grevillea robusta and Cassia siamea residues on soil N mineralization under saline conditions for 10 weeks
. The results suggest that agroforestery under saline irrigation should favour salt tolerant species preferring ammonium-N to nitrate-N as a N source. Ammonium production was unaffected by salinity levels suggesting that oorganic mulch incorporation may buffer
The AA. summarize the framework for soil salinization research in China over the past 70 years, assess the weaknesses of existing research in both a domestic and international context, highlight the trends and key findings of global research about
saline soils over the past 30 years, and propose six major fields and directions for future research on saline soil.
Climatic relationships to Chesapeake Bay salinity during southern oscillation extremes
Atlantic Ocean ; Atmospheric dynamics ; Climate oscillation ; Climatic variability ; Ecosystem ; Estuary ; Impact ; Maryland ; North Atlantic Ocean ; Ocean atmosphere interaction ; Salinity ; Teleconnection ; United States of America
Monthly cool-season salinity over the period 1958 to 1991 period is analyzed for the Chesapeake Bay (CB), and the salinity variations are associated with low-frequency 500 hPa flow variations and with extremes of the Southern Oscillation (SO
). Results identify a significant decrease in mean CB surface salinity. As the SO is responsible for such a large portion of interannual climate variability worldwide, it is important to establish a baseline relationship for CB salinity so that El Niño
Using spatial data to explore landholder awareness and concern about dryland salinity
Arid area ; Australia ; Geographical information system ; Groundwater ; Land use ; Perception ; Resource management ; Salinity ; Vegetation ; Victoria ; Watershed
Socio-economic data from a mail survey are combined in a GIS with other layers, including the location of discharge sites and depth to saline groundwater. Landholders in the upper catchment have excellent knowledge of the current extent of salinity
on their property. The extensive community education effort undertaken in this region has been successful in raising salinity awareness. But most landholders are not concerned about the impacts of dryland salinity and appear to believe they can live with salt
The AA. classify 23 pedons from 6 salt marshes in SE Spain. Samples were taken under 7 different halophyte plant communities, and represent saline soils occurring under a semiarid Mediterranean climate. The results suggest imrovements to the FAO
classification best reflects the conditions of the soils and the type of plant communities in the saline areas.
Origin and geochemical evolution of saline groundwater in the Brisbane coastal plain, Australia
Etude hydrogéologique et géochimique des eaux souterraines salines de la plaine de Brisbane. Il semble qu'il y ait eu des épisodes répétés d'ajustements hydrologiques en réponse aux variations du niveau marin au cours du quaternaire et aux
Zur Hydrodynamik der Grundwasserstockwerke in salinaren Becken der DDR. (On the hydrodynamics of the groundwater aquifers in saline basins of the GDR)
The most important aquifers of some of the GDR's saline basins are described in terms of their jointing, the flow of groundwater, hydraulic interrelationships, basis features of the pressure system, relief patterns, and reaction mechanism. (HL).
Voprosy melioracii tjazelyh glinistyh zasolennyh pocv v aridnoj zone. (Problèmes de l'amendement des sols salins argileux lourds dans la zone aride)
Amendement du sol ; Argile ; Azerbajdzanskaja SSR ; Domaine aride ; Gruzinskaja SSR ; Géographie de l'Europe ; Mise en valeur ; Sol ; Sol salin ; URSS d'Europe
Dryland salinity on the Dundas Tableland : a historical appraisal
Arid area ; Australia ; Historical geography ; Human impact ; Land use ; Model ; Nineteenth Century ; Phreatic ground water ; Salinity ; Victoria ; Water balance
Two historical premises of the hydro-equilibrium model as applied to the Dundas Tableland are challenged : firstly, that dryland salinity is secondary, or induced by European settlement; and, secondly, that reasons for significant evapotranspirative
Formation, distribution and chemical properties of saline and alkaline soils of the Cukurova region, southern Turkey
Agropédologie ; Alcalinité ; Cukurova région ; Delta ; Géographie de l'Asie ; Landsat ; Propriété du sol ; Pédologie ; Salinité ; Sol salin ; Turquie ; Turquie du Sud ; Télédétection
This study aims to produce detailed information on the extent and the success of reclamation over 30 years. The salinity and alkanility changes over the last 30 years in the Cukurova Region are studied using LANDSAT images, field trials and data
Zasolennye pocvy ravniny Dzeffara Livijskogo Sredizemnomor'ja (Sols salins de la plaine de Djeffara dans la région méditerranéenne de la Libye)
Domaine aride ; Domaine méditerranéen ; Géographie de l'Afrique ; Libye ; Littoral ; Plante cultivée ; Sol ; Sol salin ; Solonchak ; Zone subtropicale
Les sols salins de cette plaine maritime sont représentés par des sols arides rouge-brun et des solonchaks hydromorphes. Principales cultures fruitières subtropicales résistantes au sel dans l'ordre décroissant : dattier fruitier, olivier, amandier
Morphostructures de coupoles salines dans le Prioural méridional
Rôle de la tectonique saline dans la formation du relief actuel de cette région. Types de manifestations géomorphologiques des soulèvements salins. Association structuro-tectonique et géomorphologique avec les morphostructures de coupoles de sel
. Différenciation par analyse des groupes des morphostructures des coupoles salines.
Changes in soil salinity in the habitats of five halophytes after 20 years
Années 1979-1980 ; Années 1999-2000 ; Bassin-versant ; Climat méditerranéen ; Domaine aride ; Ebro ; Espace-temps ; Espagne ; Etude comparée ; Habitat ; Milieu humide ; Propriétés du sol ; Sol salin ; Végétation
Arid area ; Comparative study ; Ebro ; Habitat ; Humid environment ; Mediterranean climate ; Saline soil ; Soil properties ; Space time ; Spain ; Vegetation ; Watershed
This study presents easy procedures for comparing soil salinity profiles, which were used to assess 4 saline wetlands in the Central Ebro Basin, NE Spain. Soil salinity measurements at sites where different halophytes were dominant were recorded
halophytes. The 5 halophytes are ranked both by the salinity and the sodicity of their habitats. This work is a baseline to detect to natural or anthropic salinity changes.
The aim of this research is to establish a methodology for the systematic study of saline wetlands in southern Monegros. A wetlands inventory was produced and updated using satellite data, field observations, and orthophotographs, together
Gradients of soil salinity and moisture, and plant distribution, in a Mediterranean semiarid saline watershed : a model of soil–plant relationships for contributing to the management
and species abundance) and soil (moisture, pH, redox potential, electrical conductivity and soluble ions). Multivariate analysis showed that vegetation was closely related to soil moisture and salinity. The soils colonised by steppe grasses and halophilus
and halonitrophilus shrubs were the driest and least saline. The results support the role of vegetation as bioindicator of disturbances and the use of soil–plant relationships models to improve the environmental management of saline ecosystems.