Physical Deterioration of Quality and Soil and Water in Your Connection Mass Removals (PAP014785)

Código

PAP014785

Autores

DIEGO JAVIER PEREZ ORTEGA, JULIANA HELOISA PINÊ AMÉRICO, YEMALL ALEXANDER MAIGUAL, JORGE ANDRES SEGOVIA ORTEGA, LUCAS MENEZES FELIZARDO, Josiane Lourencetti, Marcelo Marconato Prates, D. Pérez, SÉRGIO LUIS DE CARVALHO

Tema

Land use and Floods, landslides and erosion

Resumo

The physical behavior of the soil and water based their management practices, especially in the strong slopes. The objective of this research was to evaluate the interrelationships between soil physical properties and water holding capacity of soils on different systems for urban use of San Juan de Pasto - Colombia and its impact on processes of mass removal. In 2013, we selected four areas contained in different slopes, which were built and are almost entirely urbanized twenty years ago, in two more places there is some kind of vegetation. Twenty seven soil samples were collected in the layers 0-45 cm, 45-100 cm and 100-145 cm depth, the resulting data determined as a result of water retention curves (WRCs), of soil in different seasons, which served to make correlations with variables such as bulk density, organic carbon content and clay content. It was found that the sealing of land use for asphalt roofing, resulted in higher values of soil density and soil with some vegetation cover type even at high slopes, resulted in lower bulk density, lower carbon organic and clay. Some canonical variables indicated dependence on moisture content of the soil density. The changes in the curves of water retention in the soil suggest a greater compaction of soils in areas with strong slopes, plus also mean a deterioration of physical and water of this quality, contributing to the increased likelihood of moving large amounts of land in a high slope slip.