TY - JOUR AU - Campos, Milton César Costa AU - Soares, Marcelo Dayron Rodrigues AU - Santos, Luis Antonio Coutrim AU - Oliveira, Ivanildo Amorim PY - 2013/07/01 Y2 - 2024/03/28 TI - Spatial dependence of soil physical attributes in of Alfissol forest JF - Comunicata Scientiae JA - Com. Sci. VL - 4 IS - 2 SE - Original Article DO - 10.14295/cs.v4i2.214 UR - https://comunicatascientiae.com.br/comunicata/article/view/214 SP - 168-178 AB - This study aim to evaluate the spatial variability of soil physical attributes in of Alfissol forest in<br />Manicoré region, AM. The mapping of an agroforestry growing area of 70x70m was made using a<br />regular grid sampling of 10 x 10m. In each grid , soil samples were collected at 0.0 – 0.2 and 0,40 –<br />0,60 m depth, with a total of 128 sample points. Physical analyses were made (texture, soil bulk and<br />particles density, macro and microporosity, total porosity and aggregates stability in water).With<br />the exception of DMG, DMP and class aggregates &lt;1.00 mm had all the physical attributes spatial<br />dependence structure ranging from moderate to weak. Values were above the range established<br />in the mesh (12.00 to 45.56 m), enabling to make a basis for future studies in forest area. The physical<br />attributes presented in kriging maps different spatial behavior, however there are relationships<br />between these attributes shown by geostatistics proving that this is effective tool for studies in forest<br />area. ER -