Abstract. JARAMILLO JARAMILLO, Daniel Francisco. SPATIAL VARIABILITY OF THE ANDIC PROPERTIES IN AN HYDROMORPHIC ANDISOL FROM THE. Colombia. Sánchez Espinosa, Jorge Alberto; Rubiano Sanabria, Yolanda. PROCESOS ESPECÍFICOS DE FORMACIÓN EN ANDISOLES, ALFISOLES Y. Determinación de acidez en andisoles de la zona cafetera colombiana utilizando diferentes metodologias. Article (PDF Available) in Acta.
|Published (Last):||13 January 2009|
|PDF File Size:||12.83 Mb|
|ePub File Size:||2.41 Mb|
|Price:||Free* [*Free Regsitration Required]|
Análisis Espacial de la Infiltración en un Oxisol de los Llanos Orientales de Colombia
Organic content, even within disturbed sites averages very high which contributes to water retention in the soil. Contour maps obtained by kriging of basic infiltration Aandisolee Bbulk anfisoles Csoil moisture Dand sand Esilt Fand clay G contents.
For the butterfly genus, see Paramo genus. After evaluating the spatial dependence by attribute, the ordinary kriging technique was implemented Sepaskhah et al. The dendrogram Figure 1 A shows clusters where groups that describe the relationship between attributes and that correspond to results obtained for Pearson correlation are observed Table 2. Pearson correlation and cluster analysis allowed establishing relationships between soil attributes; spatial relationships were corroborated in contour maps, where we observed the influence of clay and sand content in the behavior of bulk density, and the influence of these attributes in processes of water infiltration into the soil.
Its flora includes gentiansclubmossesvaleriansand asters such as Loricaria and Chuquiraga species. The soil has a relatively low pH because of an abundance of moisture and organic content. These graphic representations revalidate the relationships found by Pearson correlation and hierarchical analysis.
The precise determination of the water infiltration rate in the soil helps to minimize the risks of degradation, especially with the process of surface runoff. Pesquisa Agropecuaria Brasileira Results suggest a behavior of parameters close to normal, attributes related to soil water movement had greater variability, with low basic infiltration 1. At the anxisoles time, characterizing the infiltration process constitutes one of the basic parameters of the adequate design and management of the risk systems in agricultural production.
In andisolew and disturbed eh that were studied in the Andes the pH and phosphorus concentration in the soil are higher than in non-burned sites. Infiltration tests were carried out for a period of min colombis continuously for each point, with standard double ring infiltrometers of 0. Andisols Facultad Nacional de Agronomia Pearson correlation of soil attributes.
Another important element to verify is the occurrence of the proportional effect between mean and variance of samples in space, since this effect allows estimating sills defined in semivariogram models.
Wills, Fernando; et al.
For the use of descriptive statistics in the study of the soil attributes, samples are analyzed to characterize a region, where the number of these is generally low and is conditional upon prior knowledge of the study area andixoles looking for recommendations tolerance given by a confidence limit that is accurate Mallants et al. It can be observed that the process of infiltration is weakly influenced by the sand and clay contents Haghighi et al.
The semivariogram is defined as the arithmetic mean of all the squares of the differences between pairs of experimental values separated by a distance h, or increments variance colomnia the regionalized variable in localizations separated a distance h Sepaskhah et al. Usually Ks and S1 exhibit similar tendency Abrisqueta et al.
Variabilidade espacial de propriedades fisicas do solo em uma parcela experimental. The smallest Euclidean distances reported for this group show the strong correlation between these attributes, as observed in the correlation of Pearson. Nuestro patrimonio – tesoros de Colombia – Our heritage – treasures of Colombia in Spanish.
The analysis of the descriptive and multivariate statistics was performed with the program SPSS v. Porosity characterization of Argiudolls under different management systems in the Argentine Flat Pampa.
These values of Ks indicate that the water flow is slow and there are some places with moderate Ks, but with water flow restrictions. Geostatistical analysis of sorptivity for a soil under tilled and no-tilled conditions.
suppliers colombia line
The Ci and Ks showed a nugget effect NE ; that is, they did not andidoles defined spatial dependence. This is because during the first moments of the infiltration process the advance time has not surpassed the insertion depth of the rings in the soil. CS1 Spanish-language sources es CS1 maint: The rest of attributes showed a range of R 2 between 0. Using the simplified falling head technique to detect temporal changes in field-saturated hydraulic conductivity at the surface of a sandy loam soil.
In other projects Wikimedia Commons.
Applications of soil physics. Soil Biology and Biochemistry Variability in soil properties at different spatial scales 1 m – 1 km in a deciduous forest ecosystem. In the same way, a direct relationship between clay and Sm can be observed, and an inverse one between sand and Sm, which xolombia that a high clay content, greater soil moisture, and thus the greater capacity for water storage.
In the absence of andisooles of other tools for a better estimate, the characterization of soil attributes is done using measures of location mean, median, minimum and maximumdispersion coefficient of variation – CV and shape skewness and kurtosis.
There are diverse theoretical models that can be fit to the experimental semivariogram. Numerical evaluation of ring-infiltrometers under various soil conditions. The basic infiltration Bi and clay content differ from this behavior.
This has altered forest lines, often lowering them by several hundred meters, which has also affected the zoning habitats for many animals.
The high levels of disruption also make this zone particularly difficult to define, as humans typically extend and expand the zone for their own purposes, sometimes over hundreds or thousands of years.
For the present study, this greater variation can be observed in step 7 Figure 1 Bwhere the Euclidean distance goes from a value of Linking hydraulic properties of andsoles soils to infiltration and water repellency. The low correlation shown by Sm in the attribute of infiltration studied is noteworthy, in that S 1 was the only attribute that showed a significant correlation with Sm.
From Wikipedia, the free encyclopedia.