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.).
Nature and distribution of frozen saline sediment on the Russian Arctic coast
Arctique ; Gel ; Littoral ; Pergélisol ; Propriétés du sol ; Périglaciaire ; Russie ; Salinisation ; Solsalin ; 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.
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
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.
Agroclimatologie ; Blé ; Chine ; Domaine aride ; Evapotranspiration ; Hebei ; Microclimat ; Propriétés du sol ; Salinité ; Solsalin ; 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.
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 ; Solsalin ; 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.
Eau de mer ; Estonskaja SSR ; Littoral ; Mer Baltique ; Sol ; Solsalin ; URSS d'Europe
Coastal environment ; European part of USSR ; Saline soil ; Sea water ; Soil
Les solssalins 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
Voprosy melioracii tjazelyh glinistyh zasolennyh pocv v aridnoj zone. (Problèmes de l'amendement des solssalins argileux lourds dans la zone aride)
Amendement du sol ; Argile ; Azerbajdzanskaja SSR ; Domaine aride ; Gruzinskaja SSR ; Géographie de l'Europe ; Mise en valeur ; Sol ; Solsalin ; URSS d'Europe
Zasolennye pocvy ravniny Dzeffara Livijskogo Sredizemnomor'ja (Solssalins 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 ; Solsalin ; Solonchak ; Zone subtropicale
Les solssalins 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
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 ; Solsalin ; 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
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
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.
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.
Nitrogen mineralization of agroforestry tree mulches under saline soil conditions
Agroforesterie ; Agropédologie ; Azote ; Domaine aride ; Domaine semi-aride ; Expérimentation ; Kenya ; Propriétés du sol ; Salinité ; Technique agricole
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
Using spatial data to explore landholder awareness and concern about dryland salinity
Australie ; Bassin-versant ; Domaine aride ; Eau souterraine ; Gestion des ressources ; Perception ; Salinité ; Système d'information géographique ; Utilisation du sol ; Victoria ; Végétation
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
Solssalins. Classification, genèse, développement et exploitation.
Domaine aride ; Domaine semi-aride ; Désertification ; Halophyte ; Salinisation ; Sel ; Sol ; Solsalin ; Utilisation du sol ; Végétation
Arid area ; Desertification ; Halophyte ; Land use ; Saline soil ; Salinisation ; Salt ; Semi-arid area ; Soil ; Vegetation
La salinisation des sols est un processus d'origine climatique qui affecte en particulier les milieux arides mais a aussi une origine anthropique (irrigation trop importante). Améliorer les sols salinisés coûte cher. Les régions les plus touchées