|
|
|
|
|
| D’Andrea, Alexandre Fonseca; Silva, Marx Leandro Naves; Freitas, Diego Antonio França de; Curi, Nilton; Silva, Carlos Alberto. |
| Soil is an important compartment of carbon in terrestrial ecosystem, retaining substantial quantity of this element in organic forms, mainly in forest areas. The understanding of the factors that affect the fluxes of soil CO2 is the basic to the reduction of emissions of greenhouse gases to the atmosphere. The objective of this work was to evaluate the patterns of spatial variability of soil CO2 flux in native forest in a very clayey dystroferric Red Latosol (Oxisol), in Lavras city, Minas Gerais state, Brazil. A grid of 32 points was delimited, regularly spaced in 5 m distance, in which the CO2 flux and environmental factors (water evaporation, temperature and soil moisture) and attributes related to fertility (pH, base soil saturation and exchangeable... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental factors; Carbon; Organic matter; Linear correlation. fatores ambientais; Carbono; Matéria orgânica; Correlação linear. |
| Ano: 2010 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/169 |
| |
|
|
| Morais, Vinícius Augusto; Silva, Carlos Alberto; Scolforo, José Roberto Soares; Mello, José Márcio; Araújo, Emanuel José Gomes de; Assis, Edson Aquiles de. |
| The total soil organic carbon (C) is regulated by climatic factors, altitude, texture and soil depth. Due to higher storage in surface, it is common to observe the exponential model to adjust the C content in the soil profile. This study was carried out in order to study the influence of climatic factors, altitude and soil depth on the vertical distribution (0-100 cm) of C in five Cerrado fragments located in the municipalities of Januária and Bonito de Minas, Minas Gerais State, Brazil. Soil samples were collected in the following layers: 0-10, 10-20, 20-40, 40-60 and 60-100 cm. The maximum and minimum levels of C varied depending on the sampling site, fragment and soil layer sampled. Larger variations in the levels of C were noted for the 0-10 cm layer,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Climatic change; Root; Litter; Total organic carbon Recursos Florestais; Engenharia Florestal; Manejo Florestal Mudanças climáticas; Raiz; Serrapilheira; Carbono orgânico total. |
| Ano: 2013 |
URL: http://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/507 |
| |
|
|
|
