نتایج جستجو برای: pedogenesis
تعداد نتایج: 221 فیلتر نتایج به سال:
Studying soil phosphorus fractions is useful in understanding soil pedogenesis as well as soil fertility. In this reseach, 20 soil samples were taken from different depths of 0-30 and 30-60 cm of upper-slope, mid-slope and lower-slope positions of four toposequences in arid (Jei and Ziar in Isfahan) and semiarid (Farokhshahr and Shahrekord) regions. In each toposequence, the soil depth was re...
Studying soil phosphorus fractions is useful in understanding soil pedogenesis as well as soil fertility. In this reseach, 20 soil samples were taken from different depths of 0-30 and 30-60 cm of upper-slope, mid-slope and lower-slope positions of four toposequences in arid (Jei and Ziar in Isfahan) and semiarid (Farokhshahr and Shahrekord) regions. In each toposequence, the soil depth was re...
Abstract. Transfer of organic carbon from topsoil horizons to deeper and the water table is still little documented, in particular equatorial environments, despite high primary productivity evergreen forest. Due its complexing capacity, also plays a key role transfer metals soil profile and, therefore, pedogenesis for metal mobility. Here we focus on podzols, which are known play an important c...
Clay-rich red soil profiles developed in different lithologies Indonesia were assessed using geochemical evidence, the migration coefficient and elemental ratios. Our study aimed to ascertain source of materials investigate behavior tropical soils. The results indicate carbonate derived from situ weathering, while basalt profiles, even though having close affinity their bedrock, also showed con...
[1] Analyses of MRO/CRISM images of the greater Mawrth Vallis region of Mars affirm the presence of two primary phyllosilicate assemblages throughout a region ∼1000 × 1000 km. These two units consist of an Fe/Mg‐phyllosilicate assemblage overlain by an Al‐phyllosilicate and hydrated silica assemblage. The lower unit contains Fe/Mg‐ smectites, sometimes combined with one or more of these other F...
Loess provides a valuable terrestrial record of past environmental conditions, including the dynamics and trajectories air mass circulation responsible for dust transport. Here we explore variations in luminescence sensitivity characteristics sedimentary quartz feldspar as possible tools identifying changes source down loess-palaeosol sequence (LPS). Luminescence is rapidly measurable index whi...
Human activities worldwide menace beneficial soil ecosystem services, but long-term anthropogenic impacts on properties and processes are often difficult to assess in field conditions. Here we exploited INRAE’s patrimonial ‘42-plots’ bare-fallow experiment, an unique long term experiment the world created 1928 Versailles (France), emphasize of annual inputs NPK fertilizers (ammonium, phosphate,...
In arid and semi-arid climates, soil development is strongly influenced by seasonal patterns biogenic activity, often results in pervasive pedogenic horizons consisting of highly concentrated carbonate. Brazil, such enriched calcium carbonate are common relatively well-studied paleosols the Upper Cretaceous Marília Formation. However, detailed analyses on sequence mineral precipitation phases r...
Abstract Purpose Spatial and temporal patterns of past erosional events are a useful needed information to explain observed soil in different landscapes. Soil thickness reflects the overall expression pedogenesis erosion. Forested soils Northern Germany exhibit varying thicknesses with thin on crest positions buried at footslope. The aim this study is reconstruct complex mass redistribution for...
The research that was conducted from April to December 2020 in the Supiturung Micro-Watershed, located on western slope of Mount Kelud, Kediri aimed study morphological characteristics and soil classification using a topo-sequence approach. Four pedons were observed across physiographic positions (upper, middle lower slopes) dry-land farming land use. method used this included 8 stages, namely ...
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