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  • Evaluation of two models to calculate the soil erodibility factor K
  • Belgium ; Erodibility ; Model ; Rill wash;Runoff ; Slope ; Soil ; Soil properties ; Soil science
  • The soil erodibility factor K used in the Revised Universal Soil Loss Equation can be calculated by two general applicable models. Data on the various soils covering northern Belgium are processed to evaluate the use of these models. Erodibility
  • factors are calculated for the top layer of soils where rill and interrill erosion occur. The K-values generated by each model are then compared throughout the range of soil types varying erodibility. For both models average K-values per unit area
  • Indices for the estimation of interrill erodibility of Moroccan soils
  • Erodibility ; Infiltration ; Mineralogy ; Morocco ; Precipitation ; Rainfall simulation ; Research technique ; Rill wash;Runoff ; Soil ; Soil erosion ; Soil science
  • Replicated runoff and soil loss measurements were made on nine Morrocan soils having 9 to 10 % slopes using a rainfall simulator. The objectives of the study are to relate soil erodibility to major physical, chemical and mineralogical properties
  • of some surface soils in Morocco and to develop a predictive erodibility erodibility index that uses simple laboratory-determined properties applicable to these soils.
  • Buried black soils on the slopes of Mt. Kilimanjaro as a regional carbon storage hotspot
  • Landscapes and soils through time
  • Black soil ; Carbon sequestration ; Ecosystem ; Mountain ; Organic materials ; Palaeosol ; Slope gradient ; Soil properties ; Tanzania ; Tropical rain forest ; Volcano
  • In this study, the AA. investigated in detail the soil organic carbon (SOC) content and SOC stocks in soil profiles (mostly Andosols) along 2 altitudinal transects, situated on both the humid southern slopes and on the drier northern slopes
  • of the Kilimanjaro. These paleosol sequences are characterized by high soil organic carbon contents. SOC stocks per square meter exceed those of typical Andosols and Chernozems. As compared to the SOC storage in the surrounding savannah soils of the Maasai Steppe
  • , the buried black soils constitute a distinctive regional carbon storage hotspot.
  • [b1] Inst. of Soil Science and Soil Geography, Dept. of Soil Physics and Inst. of Geomorphology, Univ., Bayreuth, Allemagne
  • [b2] Inst. of Agronomy and Nutritional Sciences, Soil Biogeochemistry, Martin-Luther Univ. Halle-Wittenberg, Halle, Allemagne
  • [a2] Soil Science and Soil Protection Group, Univ., Halle, Allemagne
  • [a3] Inst. of Soil Science and Land Evaluation, Univ. of Hohenheim, Stuttgart, Allemagne
  • Clay illuviation in Red Mediterranean Soils
  • Special Issue. Red Mediterranean soils
  • Aeolian dust ; Arid area ; Carbonate ; Clay mineral ; Climatic variation ; Concept ; Dating ; Geochemistry ; Lateritic soil ; Mediterranean States ; Mediterranean area ; Red soil ; Soil ; Soil classification ; Soil properties ; Taxonomy
  • This paper shows the reality of clay illuviation in Red Mediterranean soils under present day environmental conditions, and examines the effects of time and climatic fluctuations during Holocene and Pleistocene on this soil forming process. Textural
  • features and fabrics existing in Red Mediterranean soils are inventoried. The problem of age determination is also addressed, through the use of radiometric dates and correlation with archaeological artifacts.
  • [a1] Dept. of Soil Science, University of Saskatchewan, Saskatoon, Canada
  • [b1] Science des Sols et Hydrologie, INA, Thiverval-Grignon, France
  • Soil aggregation, aggregate stability, organic carbon and nitrogen in different soil aggregate fractions under forest and shrub vegetation on the Loess Plateau, China
  • Aggregate ; Carbon ; China ; Geophysics ; Land use ; Loess ; Microstructure ; Nitrogen ; Plateau ; Soil properties ; Vegetation
  • . Therefore, the aims of this study were to elucidate the effects of different plant communities on soil aggregate stability and the distribution of organic carbon and nitrogen in different aggregate fractions by using ultrasonic method, both in old forest
  • areas and in new afforestation areas, in order to prove that the different plant covers enhance soil aggregate stability. Soil samples were collected from the hilly-gully area on the Loess Plateau : results and discussion.
  • [b2] Inst. of Soil and Water Conservation, Chinese Academy of Science, Shaanxi, Yangling, Chine
  • [b3] Inst. of Soil Science, Dep. of Forest and Soil Sciences, Univ. of Natural Resources and Applied Life Sciences, Wien, Autriche
  • [b1] State Key Lab. of Soil Erosion and Dryland Farming on Loess Plateau, Northwest Univ. Shaanxi, Yangling, Chine
  • [b4] Inst. of Physics and Materials Science (IPM), Dep. of Materail Sciences and Process Engineering, Univ. of Natural Resources and Applied Life Sciences, Wien, Autriche
  • The application of fuzzy classification to soil pH profiles in the Lockyer Valley, Queensland, Australia
  • Australia ; Classification ; Numerical analysis ; Queensland ; Soil ; Soil sciences
  • This paper examines the application of fuzzy classification to the pH profiles of soils in the alluvial plain of the Lockyer Valley. Fuzzy classification usefully demonstrates relationships between profiles among the transect and is a potentially
  • valuable method for examining the variability of soil in complex landscapes.
  • Soil geomorphology―Present dilemmas and future challenges
  • Chronosequence ; Concept ; Geomorphology ; Model ; Slope ; Soil ; Soil erosion ; Soil properties ; Soil science
  • The effects of agricultural management on selected soil properties of the arable soils in Tibet, China
  • Agricultural practice ; Agricultural productivity ; Agropedology ; China ; Cultivated land ; Irrigation ; Mountain ; Soil improvement ; Soil properties ; Sustainable development ; Tibet
  • Based on the the soil survey conducted in the late 1980s, the AA. sampled in the summer of 2007 : 17 sites of the tillage (A) layer soils and 13 sites of soil profiles, including the tillage and subsoil layers from 3 types of arable land soils
  • in Lhasa (alluvial soil, steppe soil, and meadow soil). At the same time, another 55 composite samples and core samples were taken from the grain-crop land, open vegetable land and greenhouse vegetable land of the alluvial soil. Selected soil properties
  • were measured and compared to the soil survey data from the 1980s. The results showed that because of wind erosion and irrigation, the arable soils have become significantly more sandy since the late 1980s. Moreover, because of fertiliser application
  • and acid precipitation, the soil pH and cation exchange capacity are significantly lower than in the late 1980s, thus leading to soil acidification and lower soil fertility. It is suggested that the changes in the soil properties were mainly due
  • [b1] Key Lab. of Mountain Hazards and Earth Surface Processes, Chinese Academy of Sciences, Chengdu, Chine
  • [b2] Graduate School of Chinese Academy of Sciences, Beijing, Chine
  • Mineral nitrogen reserve in the soils of Belgium and the northern part of France during the winter of 1990
  • Agropedology ; Belgium ; France ; Nitrogen ; Northern France ; Soil ; Soil properties ; Soil science
  • Since the introduction of the N-INDEX advice system in Belgium and in the northern part of France, the number of mineral nitrogen analyses of the soil is increasing. Also in the Netherlands where one has the N-MINERAAL advice system, the mineral
  • nitrogen analyses increased since 1975. The availability of the many soil analysis data makes it possible to give a review of the mineral nitrogen in the soil as a function of many factors i.e. the previous crop, the soil type, the organic fertilizer
  • Water table depths and color patterns in soils developed from red parent materials in Michigan, USA
  • Humid environment ; Land use ; Michigan ; Mineralogy ; Soil classification ; Soil properties ; Soil science ; Soil water ; United States
  • Relationships between soil color patterns and depth and duration of water tables were studied using piezometers in three soil hydrosequences that had developed from different colored parent materials. Insufficient low chroma colors was the primary
  • reason for misclassification of soils developed from red parent materials and is thought to be related to the presence of hematite.
  • Soil erosion on yak-grazing steps in the Langtang Himal, Nepal
  • Erosion rate ; Nepal ; Pastureland ; Slope ; Soil erosion ; Soil science ; Transhumance
  • Soil erosion science : reflections on the limitations of current approaches
  • Environment ; Modelling ; Quantitative analysis ; Rainfall ; Socio-economic indicators ; Soil conservation ; Soil erosion
  • Distribution and nature of Red Mediterranean soils in lebanon along an altitudinal sequence
  • Special Issue. Red Mediterranean soils
  • Altitude ; Clay mineral ; Lebanon ; Mediterranean area ; Micromorphology ; Red soil ; Soil ; Soil classification ; Soil moisture ; Soil properties ; Taxonomy
  • In Lebanon, the Red soils have been described as Terra-Rossa, Red Mediterranean, Red Fersiallitic, Red Partly Brunified, and Xeralfs. The objectives of this study are: to study the distribution of these soils at various altitudes, and their chemical
  • , physical, mineralogical, and micromorphological properties; to identify their common characteristics and individual peculiarities with respect to soil classification.
  • [a1] Dept. of Soil Science, University of Saskatchewan, Saskatoon, Canada
  • [b1] Dept of Soils, American University of Beirut, Beyrouth, Liban
  • On the characterization of Belgian soils in Land qualities in space and time.
  • As information system for the characterization of Belgian soil series is described. It is a front end application based on a statistical summary of soil profile date and on pedotransfer functions. It provides information on the characteristics
  • of soil series such as textural composition, organic carbon, calcium carbonate and hydrated ferri-oxyde-content, Cation Exchange Capacity (CEC), soil water retention and hydraulic conductivity. Necessary input for the system are the soil series and some
  • International Society of Soil Science (ISSS), International
  • Influence of shelter on soil sorting by wind erosion. A case study
  • Agricultural practice ; Agropedology ; Denmark ; Jylland ; Soil erosion ; Soil properties ; Soil science ; Wind ; Wind erosion
  • Textural analyses were conducted in order to quantify the soil status in two nearby fields with 80 m and 200 m spacing of shelter hedges with unequal wind exposure and within the fields themselves. Chosen soil status indicators are the content
  • of silt+clay, coarse particles and organic matter. The aim of this paper is to provide a quantification and a spatial description of possible differences in soil status that can be linked to wind erosion.
  • The soils of the Parque Natural do Arrábida
  • Catena ; Cultural capacity ; Nature park ; Portugal ; Soil ; Soil catena ; Soil classification ; Soil evolution ; Soil properties ; Soil science
  • Colloidal stability in some tropical soils of southeastern Nigeria as affected by iron and aluminium oxides
  • Aggregate ; Geochemistry ; Microstructure ; Nigeria ; Soil ; Soil properties ; Structural stability ; Tropical zone ; Weathering
  • The aims of this study are to : identify the rate of colloidal stability of the soils using indices; and identify the different forms of Fe and Al oxides in the soils and relate them to the stability of the colloids and microaggregate indices. Ten
  • soils from southeastern Nigeria on 2 major geological formations were sampled. Discussion of the results.
  • [b1] Dep. of Soil Science, Univ., Nsukka, Nigeria
  • The effect of soil physical parameters on soil erosion
  • Plots of land ; Quantitative analysis ; Rainfall simulation ; Research programme ; Soil erosion ; Soil science
  • This paper investigates on the basis of plot measurements how soil erodibility changes over time. Within the research programme rainfall simulation experiments and soil loss measurements after rainfalls were carried out on different plots over 8
  • Selected topics in chemical and physical soil sciences
  • History of soil science. International perspectives
  • Agropedology ; Central Europe ; Clay mineral ; Communism ; Eastern Europe ; Europe ; Geochemistry ; Germany ; Ideology ; Impact ; Micromorphology ; Mineralogy ; Pedogenesis ; Russia ; Soil ; Soil classification ; Soil properties ; Soil science
  • Vegetation type affects soil enzyme activities and microbial functional diversity following re-vegetation of a severely eroded red soil in sub-tropical China
  • China ; Ecological restoration ; Erosion control ; Experiment plot ; Geochemistry ; Jiangxi ; Microbial biomass ; Red soil ; Soil ; Soil erosion ; Soil properties ; Subtropical zone ; Vegetation
  • The aims of this study were to evaluate the restorative effects of re-vegetation and vegetation type on soil enzyme activities and microbial functional diversity of eroded red soil. Soil samples were collected by horizon from eroded soils that had
  • been restored for 18 years. Un-eroded soils planted with these vegetation types and an eroded bare soil served as references. The sampling site was located at the Red Soil Ecological Experiment Station in Jiangxi Province. Soil microbial functional
  • diversity was assessed by the community-level physiological profiles (CLPP) using BioLog Eco-plates. The results suggest that the enzyme activities and microbial functional diversity are determined by the quantity and quality of carbon inputs. Soil enzyme
  • activities and microbial functional diversity as well as soil microbial biomass and physicochemical properties in the restored eroded soil did not completely recover to the levels of the un-eroded reference soil.
  • [b1] State Key Lab. of Soil Sustainable Agriculture, Inst. of Soil Sciences, CAS, Nanjing, Chine