Results 81 to 90 of about 2,661 (199)
Mapping of planation surfaces in the north-central Amazonia
Revista Brasileira de GeomorfologiaThis study aims to identify planation surfaces and their dissected reliefs in the Amazon, starting from the highlands of the border between Brazil, Venezuela and Guiana and ending near the axis of the Amazon River. Its connection with associated surface
José Roberto Mantovani +1 more
doaj +1 more source
Espodossolos in Brazil: A review of the criteria and conceptualization of the spodic B horizons [PDF]
Revista Brasileira de Ciência do SoloThe absence of quantitative limits for the diagnostic attributes that define spodic B horizons in the Brazilian Soil Classification System (SiBCS) allows the inclusion of soils in the Espodossolos (the equivalent of Spodosols or Podzols) classes that ...
Andressa Rosas de Menezes +2 more
doaj +1 more source
Phosphorus accumulation in manure-impacted Spodosols of Florida
Agriculture, Ecosystems & Environment, 1999 Abstract Accumulation of phosphorus (P) in soils receiving long-term application of manure has been linked with degradation of water quality in nearby streams and lakes. The objective of this research was to determine the amounts and depth distribution of phosphorus (P) in Florida Spodosols used for dairies and beef ranches, and to relate them to ...
Soil and Water Science Department Newell Hall, Box 110510, University of Florida, Institute of Food and Agricultural Sciences, Gainesville, FL 32611-0510, USA ( host institution ) +4 more
openaire +2 more sources
Vegetation boundaries on ERTS-1 imagery [PDF]
There are no author-identified significant results in this ...
Deselm, H. R., Taylor, T. W.
core +1 more source
Soil Erosion and Conservation in Brazil [PDF]
Anuário do Instituto de Geociências, 2014 Brazil covers 8,547,403 km2 and is divided into five regions (Northern, North Western, Central Western, South Eastern and Southern). The diversity of climate, geology, topography, biota and human activities have contributed to the considerable ...
Antônio José Teixeira Guerra +3 more
doaj
Scientia Agricola, 2007 We hypothesized that, because of the ability of trees to sequester carbon (C) in the deep soil profile and remove excess nutrients from soils, the silvopastoral agroforestry system could enhance the environmental quality of the agricultural lands.
Vimala D. Nair +3 more
doaj +1 more source
Soil is essential for life on Earth. It is needed for food, air, clothing and so much more. Discussion topics include the terms 'soil', 'dirt', and 'sediment', factors affecting the formation of soils, soil horizons, and the twelve orders of soils.
Chris Fox, John Pratte
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Revista Brasileira de Ciência do Solo, 2009 Dark subsurface horizons, with properties similar to the sombric horizon characterized by the USA Soil Taxonomy, are frequent in Southern Brazil. The genesis of this horizon is controversial and poorly understood.
Jaime Antonio de Almeida +2 more
doaj +1 more source
The limnology of Lake Clark, Alaska [PDF]
, 2002 Thesis (M.S.) University of Alaska Fairbanks, 2002This study gathered baseline limnological data to investigate the thermal structure, water quality, phytoplankton, and zooplankton of Lake Clark, Alaska.
Wilkens, Alexander Xanthus
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Genesis and Properties of Peat at Toba Highland Area of North Sumatra [PDF]
, 2011 In Indonesia, peat soil in the highland area is only found in the plateau of Toba Highland, North Sumatra, and its morphologi-cal, physical, and chemical properties have been studied. Four profiles of peat soil were made in the field and eighteen samples
Prasetyo, B. H. (Bambang) +1 more
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