Nature and distribution of frozen saline sediment on the Russian Arctic coast
Arctique ; Gel ; Littoral ; Pergélisol ; Propriétés du sol ; Périglaciaire ; Russie ; Salinisation ; Sol salin ; Zone froide
Arctic Region ; Coastal environment ; Cold area ; Freezing ; Periglacial features ; Permafrost ; Russia ; Saline soil ; Salinisation ; Soil properties
This paper examines frozen fine-grained soils, mainly of Pleistocene and Holocene age, that are distributed along the Arctic coast at the surface and which contain soluble salts. Salinization is determined by both the conditions at formation
, and subsequent processes at cryogenic temperatures. An increase in salinization with depth is observed. This is most likely caused by moving of salts from the upper permafrost layers as the result of the migration of pore water. Salinization in general increases
with an increase in ice content. An important feature of the saline soils of the Russian Arctic coast is their heterogeneity.
The temperature/salinity relationships of the south west Indian Ocean
Indian Ocean ; Oceanology ; Salinity ; Sea water ; Temperature ; Water mass
The south west Indian Ocean may be delimited into a series of distinct water masses based on characteristic temperature and salinity relationships. - (AJC)
Géographie physique ; Israël ; Propriété physico-chimique ; Pédogenèse ; Sol ; Sol salin ; Taxonomie
Anhydromorphic and hydromorphic saline soils resemble the surface water and the ground water type of soil formation, thus differ fundamentally in geomorphic position, geochemical accumulations and ecological properties and should be differentiated
Fixation des sols salins de la région d'Aral par des adjuvants complexes
Agropédologie ; Aral ; Ex-URSS ; Géochimie ; Sol ; Sol salin ; Srednââ Aziâ
Agropedology ; Aral Region ; Former USSR ; Geochemistry ; Saline soil ; Soil ; Soviet Central Asia
The possibility to develop a water-stable structure in saline soils of the Aral region by applying calcium hydroxide with surfactants is considered. - (L'Ed.).
Techniques d'irrigation par aspersion ou par infiltration permettant l'usage d'eaux salines et donc d'accroître la production agricole. Article théorique, se basant sur les méthodes appliquées en Israël.
Spatial and seasonal variations of soil salinity following vegetation restoration in coastal saline land in eastern China
Chine ; Chine de l'Est ; Chongmind ; Humidité du sol ; Ile ; Propriétés du sol ; Restauration écologique ; Salinité ; Shanghai ; Sol ; Sol salin ; Variation saisonnière ; Végétation
China ; Eastern China ; Ecological restoration ; Island ; Saline soil ; Salinity ; Seasonal variation ; Shanghai ; Soil ; Soil moisture ; Soil properties ; Vegetation
In Chongmind Island, eastern China, the AA. explored the way vegetation restoration affected the profile distributions of soil moisture and salinity in various seasons in naturally salt-affected coastal saline land. In four types of vegetation, five
soil cores were acquired in the 80 cm depth range. Salt profiles showed the higher values in surface soil in control plots, whereas the pattern of soil salinity showed the reverse trend under vegetation. The effect of vegetation restoration
on the profile distributions of salt is significant. In control plots, soil moisture and salinity showed a clear seasonal trend. Relative to control plots, the seasonal trend of soil moisture and salinity under vegetation appeared to be complex for no clear trend
was observed. It can be concluded that plant communities significantly affect the spatial–temporal distribution of soil salinity. The selection of plant species is important in the reclamation of costal saline land.
Salinity problem of groundwater in the Wadi Tharad Basin, Saudi Arabia
Aquifer ; Arid area ; Evaporation ; Hydrochemistry ; Hydrogeology ; Irrigation ; Risk ; Salinity ; Saudi Arabia
In Wadi Tharad the groundwater has been subjected to hydrochemical study to identify the process (s) that led to the formation of relatively highly saline water in shallow alluvial aquifer. The chemical analyses results show that the groundwater
salinity was highly variable and randomly distributed along the wadi course. This variation could be attributed to intensive evaporation on effluent prone surface irrigation water that led to precipitation of evaporates. The intensive irrigation practice
through mineral dissolution recharged the groundwater with a marked increase in the salinity.
Agroclimatologie ; Blé ; Chine ; Domaine aride ; Evapotranspiration ; Hebei ; Microclimat ; Propriétés du sol ; Salinité ; Sol salin ; Utilisation du sol
Agroclimatology ; Arid area ; China ; Evapotranspiration ; Hebei ; Land use ; Microclimate ; Saline soil ; Salinity ; Soil properties ; Wheat
Properties of the soil surface layer, the temporal pattern of the microclimate variables as well as crop condition were combined to analyze the characteristics of the evapotranspiration from winter wheat fields in a saline soil area. The objectives
of this study are 1) to determine the characteristics of evapotranspiration in saline soils, with especial emphasis on its partition into transpiration and evaporation, and 2) to analyze the effect of soil salinity on the actual evapotranspiration.
Aral Region ; Brackish environment ; Ecosystem ; Fauna ; Flora ; Former USSR ; Impact ; Lake ; Salinity ; Soviet Central Asia
This paper deals with a pragmatic aspect of the Aral Sea problem. The question is how does salt (or salinity) per se effect the demise of a lake's ecosystem?
Argile ; Diffractométrie ; Evaporite ; Géographie physique ; Milieu salin ; Mode de dépôt ; Sédimentation ; Sédimentologie ; Technique de recherche
Etude expérimentale du comportement des fines en suspension lors de leur dépôt dans un milieu salin. L'effet de floculation est illustré par les courbes de fréquence de répartition des différents diamètres. Les analyses ont été réalisées à l'aide
Research on possible changes in the distribution of saline seepage in the Netherlands.
Analyse hydrogéologique des relations entre les eaux douces et les eaux salines dans les nappes phréatiques des Pays-Bas. Techniques de recherche et résultats. (CG).
Vodnyj i solevoj balans Baltijskogo morja (Bilan hydrologique et salin de la mer Baltique)
Atlantique ; Baltique ; Bilan hydrologique ; Bilan salin ; Eau de mer ; Géographie de l'Europe ; Hydrochimie ; Mer ; Salinité
Pour la première fois étude d'un bilan salin relativement complet de la mer Baltique sur la base du bilan hydrologique. Essai d'estimation de l'erreur dans le calcul des résultats obtenus. Composition saline de quelques cours d'eau du bassin de la
Eau de mer ; Estonskaja SSR ; Littoral ; Mer Baltique ; Sol ; Sol salin ; URSS d'Europe
Coastal environment ; European part of USSR ; Saline soil ; Sea water ; Soil
Les sols salins maritimes sont très répandus sur le littoral estonien. La formation de ces sols est fortement déterminée par l'eau de mer lors d'une inondation temporaire, comme par les eaux du sol caractérisées par une forte minéralisation, une
Salinity of marshes along the James Bay coast, Ontario, Canada
The salinities of tide water and sediments from the northern and the southern sectors of the coastal marshes are compared. In the north, Bay water of relatively high salinity is introduced to the marsh by tides, as is generally found in coastal
marshes elsewhere. The tidewater in southern James Bay has low salinity and the salt in the marsh is released by molecular diffusion from relict salt deposited with the post-glacial Tyrrell sea sediments. This study demonstrates that the salt in coastal
Kategorizacia zasolenych pôd pre ich zurodnenie v oblasti Podunajskej niziny Categorization of salinized soils with a view to their reclamation within the Danube lowland area
Carte ; Classification ; Danube vallée ; Géographie de l'Europe ; Sol ; Sol salin ; Taxonomie ; Tchécoslovaquie
Out of the numerous available factological materials of the Complex Pedological Survey as well as some experience all the salinized soils of the Danube lowland are classified according to both intensity and predisposition to secondary salinization