There is a great lack of information from soil surveys in the southern part State Amazonas, Brazil. The use tools such as geostatistics may improve environmental planning, and management. In this study, we aimed to scaled semivariograms sample design physical properties some environments Amazonas. We selected five areas located south state Brazil, with varied uses, forest, archaeological dark earth (ADE), pasture, sugarcane cropping, agroforestry. Regular mesh grids were set up these 64...

The south of the Brazilian Amazon is one largest cattle-producing regions in Brazil, however, most pastures are low fertility soils. Thus, cattle breeders compensate for production pastures, increasing size areas, generating more deforestation and burning. These practices increase chemical degradation process Amazonian soils, making them increasingly infertile when improperly managed. With this, objective work was to evaluate impacts caused attributes areas under forest-to-pasture...

A dificuldade em encontrar informações recentes sobre o comportamento espacial dos atributos solos na Região Amazônica tem sido preocupação de muitos pesquisadores. Em razão da grande e custos para avaliar os solos, têm-se utilizados métodos alternativos predição do solo como a suscetibilidade magnética. Sendo assim, objetivo deste trabalho foi variabilidade magnética (SM), físicos químicos determinar densidade amostral coleta Argissolo Vermelho sob floresta nativa, Terra Preta Arqueológica...

Fruticulture in the Amazonian Rainforest is one of main causes deforestation, biodiversity loss, and soil erosion. plays a key role traits organic matter (SOM) compartments by altering ecosystem. Our aim was to assess influence Forest-Fruticulture conversion on traits, SOM fractions Brazil's Legal Amazon. The experiment carried out field conditions using four land uses as treatments: Bixa orellana, Theobroma grandiflorum, Paullinia cupana, Amazon Rainforest. physicochemical were analyzed...

RESUMO:O conhecimento dos danos provocados pelos diferentes sistemas de manejo é essencial para melhorar a qualidade física do solo.Assim o objetivo deste trabalho foi avaliar os atributos físicos solo em áreas sob

The process of converting natural ecosystems in cultivated areas, as well use and land management systems have provided changes aggregate stability soil carbon stocks levels. objective this work was to evaluate the aggregates stock areas under forest conversion different cropping systems, using statistical tools. Grids were established according culture dimensions, samples taken at crossing points grids depths 0.00–0.05; 0.05–0.10; 0.10–0.20 m, with 80 sampling each area, totaling 240 per...

Para se avaliar a qualidade do solo e sustentabilidade em ambientes de Terra Preta Arqueológica da Amazônia, é importante caracterização dos impactos uso diferentes tipos cobertura. Sendo assim, o objetivo deste trabalho foi os atributos físicos carbono orgânico áreas Arqueológica, no município Novo Aripuanã, AM, sob cultivos feijão guandu (Cajanus cajan) pastagem, comparação com cobertura floresta, base técnicas estatística tradicional univariada multivariada geoestatística. isso foram...

The study aimed to quantify Cd, Cr, Cu, Ni, Pb, Zn, Al, Fe, and Mn concentrations in soils due cemetery occupation the Brazilian Amazon order assess potential of environmental contamination. Atotal 45 samples were collected 0.00–0.40, 0.40–0.80, 0.80–1.20m layers, with trenches opened a Gleysol (Cemetery - I) Cambisol II) determine Mn, Zn contents. Chemical particle size analyses also performed. Soil sample digestion was based on EPA 3051A method metal determined by ICP-OES. results...

Heavy metals occur naturally in the soil as a product of rock weathering and, are commonly associated with environmental pollution and toxicity to living beings. This association deserves much attention since some heavy metals, such Fe, Mn, Cu, Zn, Ni, essential plants. Our should thus be drawn not only element itself, but also its contents soil. is because occurrence quantities covariates geomorphic, geologic, pedologic, anthropogenic diversity. In this context, present study aimed...

Archeological Dark Earths (ADEs) are fertility soils that notoriously superior to the vast majority of typical Amazon region.The study on ADEs has intensified due good characteristics presented by these soils, such as high concentration nutrients (phosphorus, calcium, magnesium).In this sense, aim was evaluate spatial distribution soil chemical attributes in an area black archeological earth under cocoa cultivation municipality Apuí (AM).The mapping a 42 x 88 m mesh, with irregular spacing 6...

Indian Black Earths (IBEs) are distributed throughout the Amazon.They characterized by their high chemical fertility and agricultural potential.IBEs have organic carbon, favouring improvement of soil structure.This work aimed to evaluate aggregates carbon (OC) spatial variability in different IBEs southern Amazonas.We evaluated variability, mean weight diameter (MWD), bulk density (ρ b ) aggregate classes under three uses soil: pasture, cocoa, coffee.We collected 528 samples a point grid...

The conversion of forested areas into cropping systems modifies the soil physical attributes and affects environmental economic sustainability agricultural activity. Thus, this work aimed to evaluate modifications caused in area guarana, cupuacu, annatto compared with forest southern Amazonas. In guarana meshes 90 m × 70 regular spacing between sampling points 10 m, 56 8 for cupuacu 54 42 6 m. samples were collected depths 0.00–0.05, 0.05–0.10, 0.10–0.20 80 each area, making 960 four areas....

The litter deposited on the soil surface at various stages of decomposition is important for primary productivity that impacts microbial communities and carbon storage. objective this study was to evaluate accumulation cultural residues Theobroma grandiflorum (Willd. ex. Spreng) Schum, Paullinia cupana (Mart.) Ducke, Bixa orellana L., forest in Amazon region. carried out São Francisco settlement, Canutama south Amazonas, a randomized block experimental design, treatments consisted four areas...

RESUMO Mudanças no uso do solo têm motivado pesquisas sobre a dinâmica de trocas radiativas e energéticas na Amazônia Brasileira que, por sua vez, geram demanda destas informações superfície em escalas espaciais temporais. Enquanto medição torres micrometeorológicas fornece resultados pontuais, o sensoriamento remoto apresenta acurados baixo custo para estimá-las escala regional. Este estudo objetivou avaliar distribuição espacial temporal estimativas saldo radiação parâmetros biofísicos...

The consumption of contaminated water is a major source heavy metal contamination in humans and animals. This study therefore aimed to assess Cd, Cu, Mn, Ni, Pb, Zn levels used for human animal vegetable crop irrigation Camocim de São Félix, Pernambuco, Brazil. Water samples were collected on the studied farms from an artesian well reservoirs as irrigation. results showed that concentrations Cd (> 0.001 mg L-1), Ni 0.025 L-1) Pb 0.01 above maximum allowable limits established under...

Studies on the spatial behavior of soil attributes in Amazon region are still very incipient.In this sense, objective work was to evaluate chemical through multivariate techniques and geoestatistics area with agroforestry sugarcane Humaitá, AM, Brazil.The study carried out a farm Humaitá city, Amazonas State.The studied divided into 70.00m x 70.00 m meshes regular spacing 10 m, totaling 64 points then, samples were collected at 0.0-0.2m 0.4-0.6 depths.We performed analyses soil.Then, it...

Amazonian soils have been suffering severe changes resulting from human activities in the region, causing significant soil attributes that can contribute to greater susceptibility erosion processes. Therefore, present work aimed estimate erodibility natural and anthropic environments southern region of Amazon. Eight areas were selected, including native forest, savannah, cerradão, pasture reforestation, delimiting 32 sampling points per area, with collections at a depth 0.00-0.20 m, totaling...