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Role of microtopography in the formation of sodic soils in the semi-arid part of the Indo-Gangetic Plains, India
  • Role of microtopography in the formation of sodic soils in the semi-arid part of the Indo-Gangetic Plains, India
  • Alluvial plain ; Arid area ; Ganges River ; India ; Micromorphology ; Mineralogy ; Neotectonics ; Pedogenesis ; Saline soil ; Semi-arid area ; Soil properties ; UttarPradesh
  • In the northwestern part of the Indo-Gangetic Plains (IGP), India, non-sodic and moderately sodic soils occur on microhigh (MH) and highly sodic soils on microlow (ML) position under a semi-arid climate. The main soil-forming processes have been
  • that the neotectonics have caused the microtopographical variations that control the formation of sodic soils.
  • clay illuviation, deposition of pedogenic calcium carbonate and concomitant development of sodicity. The semi-arid climate and topography interact to facilitate greater penetration of bicarbonate-rich water in microlow than microhigh positions. It seems
Effect of land rehabilitation on physicochemical and microbial properties of a sodic soil
  • Effect of land rehabilitation on physicochemical and microbial properties of a sodic soil
  • Agropedology ; Arid area ; Biogeochemistry ; Ecological restoration ; India ; Semi-arid area ; Sodic soil ; Soil ; Soil properties ; UttarPradesh
  • This study was carried out at Banthra Research Station (BRS) of the National Botanical Research Institute, Lucknow. The goals were (1) to evaluate the effect of long term (5 decades) rehabilitation of sodic land through cropping system on soil
  • properties) of rehabilitated sodic land (RSL) were compared with adjacent degraded sodic land (DSL) and non-sodic soil (NSS). Microbial biomass and enzyme activities were negatively correlated with soil sodicity parameters : pH, EC, exchangeable sodium
  • percentage (ESP) and sodium adsorption ratio (SAR), except alkaline phosphatase activity. Rehabilitation of degraded sodic land through cropping showed 79% (mean gain %) improvement in soil quality. It is concluded that rehabilitation of degraded sodic lands
  • physicochemical and microbial properties, (2) to assess seasonal variation in soil properties of different lands and (3) to calculate increase in soil fertility through gain percent. For this purpose, changes in soil properties (physicochemical and microbial
  • through cropping showed a considerable increase in soil fertility.
Numerical classification of some Southern sodic soils
  • Numerical classification of some Southern sodic soils
  • An analysis of a range of soil profiles in Zambia and Zimbabwe was subjected to statistical analysis to determine the validity of various soil classifications. The soil groups recognised were mutually exclusive and internally showed a high degree
Improving aggregate stability of sodic sandy loam soils by organics
  • Improving aggregate stability of sodic sandy loam soils by organics
  • The objective of this study was to examine at different application rates the effectiveness of some natural and synthetic organics in improving aggregate stability of sodic soils. An attempt has also been made by multi-index approach to select
Thermoluminescence dating and chemistry of Quaternary sodic alluvial soils in the Venezuelan savanna
  • Thermoluminescence dating and chemistry of Quaternary sodic alluvial soils in the Venezuelan savanna
  • Dating ; Geochemistry ; Paleoclimatology ; Quaternary ; Soil ; Soil properties ; Soil science ; Thermoluminescence ; Venezuela
  • Pedological analyses and thermoluminescence dating were carried out on two soil profiles in the alluvial plain of the Orituco River, to determine if the chemical properties of the soil subhorizons are related to the paleoclimatology of the region.
Soils, surficial geology, and geomicrobiology of saline-sodic wetlands, North Platte River Valley, Nebraska, USA
  • Soils, surficial geology, and geomicrobiology of saline-sodic wetlands, North Platte River Valley, Nebraska, USA
  • Agricultural land use ; Human impact ; Humid environment ; Micro-organism ; Mineralogy ; Nebraska ; Saline soil ; Salinisation ; Salt ; United States of America
  • Saline-sodic wetland soils in the study area change on daily to seasonal scales. Cycles of surface salt development, microbial activity, and microrelief genesis are all controlled by regular wetting-drying cycles and the interaction of ponded
  • surface waters and shallow groundwaters. Relatively unique aspects of microbial ecology and surface processes make the soils important as geomicrobial reactors wherein important parts of hydrological and geochemical cycles occur.
Salt effect on hydraulic conductivity of a vertisol
  • The changes in saturated hydraulic conductivity, macroscopic swelling and clay dispersivity of a sodic black clay soil in relation to solution concentration and Na adsorption ratio of the percolating solution were measured. Based on the threshold
  • concentration curves, an empirical relationship relating saturated hydraulic conductivity and soil solution properties has been derived for vertisols and its field applicability established. For all practical purposes, swelling of clay seemed to be the major
  • factor responsible for loss of saturated hydraulic conductivity of a sodic vertisol.
Soil organic matter and its lignin component in surface horizons of salt-affected soils of the Argentinian Pampa
  • Soil organic matter and its lignin component in surface horizons of salt-affected soils of the Argentinian Pampa
  • Argentina ; Geochemistry ; Organic materials ; Pampa ; Saline soil ; Soil ; Soil properties
  • In a field experiment, the AA. investigated organic matter decomposition in nonsaline nonsodic Aquic Argiudoll, a nonsaline sodic Typic Natraquoll, nonsaline nonsodic Petrocalci Paleudoll and a saline sodic Typic Natralboll in the Pampa Deprimada
  • , Argentina. The aims were to identify the degree of stabilization of organic matter by association with mineral particles in these soils and to follow in particular the fate of lignin in these soils. They measured organic carbon, total nitrogen and the extent
  • of lignin alteration with soil depth and in various particle size fractions.
Effects of water quality on infiltration, runoff and interril erosion processes during simulated rainfall
  • Belgium ; Clay mineral ; Comparative study ; Infiltration ; Italy ; Rainfall simulation ; Rill wash ; Salinity ; Soil ; Soil erosion ; Toscana ; Water erosion ; Water quality
  • This paper discusses the effects of water quality on the hydrological and erosion response of non-saline, non-sodic soils during simulated rain experiments. Two soils, a well-aggregated clay-rich soil developed on marine silty clay deposits
  • compaction), and the interrill erosion of non-saline, non-sodic soils are analysed.
  • and a soil developed on silt loam, were selected and subjected to a series of simulated rainstorms using demineralized water and tap water. The hydrological response (infiltration, runoff), the physical degradation (soil surface roughness change and top-soil
Changes in physico-chemical, microbial and enzymatic activities during restoration of degraded sodic land : Ecological suitability of mixed forest over monoculture plantation
  • Changes in physico-chemical, microbial and enzymatic activities during restoration of degraded sodic land : Ecological suitability of mixed forest over monoculture plantation
  • Biogeochemistry ; Ecological restoration ; India ; Land use ; Mixed forest ; Reforestation ; Saline soil ; Soil ; Soil properties ; UttarPradesh
  • . The results showed that afforestation with multiple tree species restored soil properties more efficiently than monoculture plantations, and is a relatively good option for sustainable rehabilitation of sodic lands.
  • The aim of this study was to determine efficient ecological model for the restoration of degraded sodic land. The bulk density, pH, electrical conductivity (EC) and exchangeable sodium percentage (ESP) reduced during restoration under both, pure
  • plantations as well as mixed forest. Increase in water holding capacity (WHC), organic carbon, soil nutrients, microbial biomass (MB), microbial counts, CO2 flux and enzymatic activities showed significant improvement in the soil quality of rehabilitated sites
Plant succession and soil degradation in desertified areas (Fuerteventura, Canary Islands, Spain)
  • 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
  • quality is limited by natural geographic factors : aridity, salinity and sodicity as well as the water and wind erosion processes dominant in the island.
Some relationships between topography and sodic soils in Zimbabwe
  • Some relationships between topography and sodic soils in Zimbabwe
Gullying within wetlands in Zimbabwe : morphological characteristics of gullies
  • Clay mineral ; Gully erosion ; Rill wash ; Soil properties ; Tropical zone ; Zimbabwe
  • The morphology of dambo gullies is examined with particular reference to ten gully systems in the Chikwakwa-Mangwende area in north-east Zimbabwe. Localised piping is related to clay-rich, slightly sodic subsoils in columnar dambo profiles, while
A szabadkigyosi puszta talajainak vizsgalata derivatografias és infravoros spektroszkopias modszerrel. (Investigations of the soils of Szabadkigyos puszta by derivatographic and infra-red spectroscopic method)
  • A szabadkigyosi puszta talajainak vizsgalata derivatografias és infravoros spektroszkopias modszerrel. (Investigations of the soils of Szabadkigyos puszta by derivatographic and infra-red spectroscopic method)
  • In Hungary approximatively 600000h are taken up by sodic soils. For the past hundred years a number of specialists have investigated them. This study aims to show that quantitative values /DTG, TG/ obtained by the derivatographic methods can
  • be usefully applied to the assessment of these soils. (CK).
Perspectives on prehistoric and recent gullying in central Zimbabwe in Soil erosion and host materials in Africa.
  • Perspectives on prehistoric and recent gullying in central Zimbabwe in Soil erosion and host materials in Africa.
  • This investigation provides prehistoric and historical perspectives on the current erosion problem in extensive gully systems developed on sodic soils near St. Michael's Mission, central Zimbabwe. Specifically, the study focuses : 1
Physical properties of tsunami-affected soils in Aceh, Indonesia : 2,5 years after the tsunami
  • Physical properties of tsunami-affected soils in Aceh, Indonesia : 2,5 years after the tsunami
  • Grain size distribution ; Impact ; Indonesia ; Natural hazards ; Soil ; Soil degradation ; Soil properties ; Structural stability ; Sumatera ; Tsunami
  • The aim of this study was to quantify physical properties of some 2004 tsunami-affected upland agricultural soils in Aceh, Indonesia : increasing soil salinity and sodicity, and changed topsoil texture by depositing sandy or clayey sediments over
  • existing soil. The results show that soil physical degradation (compaction) was a common feature, and its amelioration will be the key to improving and sustaining crop yields in these soils.
Improvements to the dispersion status of piped gully soils following reworking and stabilisation by vegetation
  • Improvements to the dispersion status of piped gully soils following reworking and stabilisation by vegetation
  • Colorado ; Erosion control ; Geochemistry ; Gully erosion ; Marl ; Soil erosion ; Soil properties ; United States of America ; Vegetation ; Watershed
  • The physical and chemical properties of sodic gully bank soil material, deposited as in-channel sedimentary structures below a pipe system in alkaline marls, Colorado, were re-analysed for their dispersive status using a new methodology
  • . The original samples were taken from in-gully sedimentary structures with differing densities of established vegetation cover. The results showed that the use of salt-tolerant species in bio-reclamation of dispersive soils could reduce the need for gypsum
  • amendments, and reinforces the value of the site signature approach to dispersive soil analysis.
Variations in soil dispersivity across a gully head displaying shallow sub-surface pipes, and the role of shallow pipes in rill initiation
  • Variations in soil dispersivity across a gully head displaying shallow sub-surface pipes, and the role of shallow pipes in rill initiation
  • Soil surface characteristics : dynamics and impact on soil erosion. Special issue
  • ). It is concluded that calcium replaces sodium in the crust during leaching, leaving a calcic crust, and a sub-crust that is sodic and prone to subsequent pipe enlargement. Rill morphology in these materials also suggests that rills develop from these pipes when
The potential for irrigated agriculture on the Njemps Flats
  • Soil erosion, land degradation and social transition. Geoecological analysis of a semi-arid tropical region, Kenya
  • Agriculture ; Agropedology ; Irrigation ; Kenya ; Maize ; Resource management ; Semi-arid area ; Soil ; Soil properties ; Water quality
  • involves an assessment of the quality of the potential irrigation waters and an estimation of the minimum leaching requirements to control salinity, sodicity and permeability hazards. This information and estimated crop water requirements for maize are used
Changes in soil salinity in the habitats of five halophytes after 20 years
  • Changes in soil salinity in the habitats of five halophytes after 20 years
  • 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
  • in 3 seasons (spring–summer–winter) throughout the year in 1979–1980 and 1999–2000, with additional measurements in 1985. Electrical conductivity of saturation extracts (ECe) and the concentrations of major ions were measured in 400 soil samples for 5
  • 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.