نتایج جستجو برای: pedogenesis

تعداد نتایج: 221  

2013
LAWRENCE H. TANNER SPENCER G. LUCAS Pedro Arroyo

Carbonates of the Ojo Huelos Member of the San Pedro Arroyo Formation include ostracodal limestones, brecciated micritic limestones, vuggy, mottled limestones, peloidal graistones/packstones, pisolitic rudstones and nodular limestones. These lithofacies record deposition in lacustrine, palustrine and alluvial environments. Lacustrine (ostracodal) limestones are isotopically heaviest, with nodul...

Journal: :Pedosphere 2021

Systematic studies on the genesis, properties, and distribution of natural nanoparticles (NNPs) in soil remain scarce. This study examined a chronosequence continuous paddy field land use for periods ranging from 0 to 1 000 years determine how NNPs changed at early stages genesis eastern China. Soil samples were collected coastal reclaimed fields that cultivated 0, 50, 100, 300, 700, years. Nat...

2011
Eliana Marques Cancello Og DeSouza

The several ways termites interact with the plant-soil-litter system are outlined in a conceptual web of pathways to show how distinct actions of termites may impact ecosystem functioning, either positively or negatively. That is, because of their several modes of feeding and nesting, termites may act as agents of decomposition or pedogenesis, pests, competitors of grazing livestock, or as sour...

Journal: :Land 2023

Pedogenetic features of the soils could be a proxy for revealing landform surface processes. Our work first analyzed particle size distributions and lithological discontinuities (LDs) in midstream Zoushui River, central Taiwan. The results showed that parental materials derive from mixed sediments River its tributaries, LDs some suggested multi-depositional events with homogeneous lithology. Th...

Journal: :Soil Science Society of America Journal 2021

The Galápagos archipelago is a well-suited model ecosystem for investigating soil evolution. Here, we study mineral transformations and pedogenesis of the volcanic soils in response to weathering duration (1,500–1,070,000 yr) climate (humid vs. dry). Our results show that pH, electrical conductivity, organic C content, cation exchange capacity (CEC), water retention decreased whereas clay conte...

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