Efectos de la posición fisiográfica en las propiedades hidrofísicas de los suelos de páramo de la microcuenca del Río Zhurucay

Abstract

The aim of this investigation is identify the effects of the physiographic position on the hydrophysical properties of the soil moorland of the watershed of the Zhurucay river, it is located in the area of Quimsacocha and soils that jut are Andosols and Histosols. In the upper part of the watershed of the Zhurucay were delineated 3 transects and were described 45 profiles taking into account the physiographic position. Furthermore in each location were took disturbed and undisturbed samples. A property that was analyzed on field was the saturated hydraulic conductivity across of the auger hole method and inversed auger hole. In laboratory by means of the disturbed and undisturbed samples were determined the moisture contents in 6 points pF. Furthermore, by means of the moisture contents were determined the gravitational water contents and available water. Bulk density was determined with undisturbed samples. Due to the importance of organic matter of the soils was determined the content of organic matter with ignition method By means of the no parametric tests were compared the depth of the soils and hydrophysical properties of the surface horizons of 6 physiographic positions that were identified. The results showed that the physiographic position affect significantly in the depth of the soils where the valley bottom there are of great depth soils. Also in the surface horizons, majority of hydrophysical properties and organic matter contents showed to be affected by physiographic positions where the surface horizons of valley bottom showed differences with middle slope, upper slope and summit. Finally, the relations between hydrophysical properties as also with organic matter were studied.