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.

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The DSD close to one showed the reliability of the fit of data to theoretical semivariograms, a necessary condition for the interpolation of variables in the elaboration of contour maps. This oscillation often results in a daily freeze-and-thaw cycle, sometimes described as “summer every day and winter every night.

Variabilidade espacial de propriedades fisicas do xolombia em uma parcela experimental.

Water Resources Research Contour maps confirm the existence of spatial variability of evaluated attributes Figure 2defined by heterogeneity and complexity that link hydrophysical attributes, among which size, form, and continuity abdisoles pores and of soil aggregates, which in turn determine the size and roots development Imhoff et al.

Journal of Soil Science Group I is made up of Andiaoles, sand and silt content, a situation that confirms that soil water content is directly related to clay and sand content.

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At the same 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 burned and disturbed sites that were studied in the Andes the pH and phosphorus concentration in the soil are higher than in non-burned sites. Increases in temperature extremes are forcing many fauna and flora species to higher grounds, and eventually they could face extinction. With the data obtained, fits were made using the model that shows the cumulative infiltration in an elapsed time in a vertical flow Philip modelon the basis of which the basic infiltration Bithe sorptivity S1and the saturated hydraulic conductivity Ks were defined.

This page was last edited on 25 Augustat CS1 Spanish-language sources es CS1 maint: In Colombia and northern Ecuador, air masses from the Intertropical Convergence Zone ITCZ have a substantial effect on the climate, and these regions tend to be consistently humid approx. Linking hydraulic properties of fire-affected soils to infiltration and water repellency.


Spatial variability of hydraulic properties in a multi-layered soil profile. Geostatistics in soil science: Furthermore, it does not permit defining the spatial variability, since this technique does not give information about the pattern of spatial distribution of a particular attribute, which makes it impossible to establish management units.

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. These graphic representations revalidate the relationships found by Pearson correlation and hierarchical analysis.

New York Botanical Garden Press. Existing correlations among attributes of sand and clay are confirmed, demonstrating that zones volombia high sand content correspond to zones with a low amount of clay.

Southern Ecuador and northern Peru experience the most severe dryness as they are influenced by an air mass from the Amazon Basin, which releases its moisture on the eastern slopes, as well as another air mass from the west that is influenced by the Humboldt Current.

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. Numerical evaluation of ring-infiltrometers under various soil conditions. The experimental semivariogram is defined by: Plant communities in this vegetation zone are also known to include thickets that are mainly composed of shrubby or woody vegetation, including species from the IlexAgeratinaand Baccharis genera.

The Pearson test showed direct and significant correlations between Ci, Bi, S1 and Ks, attributes that correspond to water infiltration process Table 2. The use of descriptive statistics allowed identifying the existence of variability of soil physical attributes, as well as parameters of water infiltration, which in the majority fit distribution patterns that were modeled using geostatistical techniques, which allowed attributes prediction in non-sampled zones, through interpolation algorithms such as kriging.

Dendrogram of cluster analysis of soil attributes A and representation of the Euclidean distance variation between attributes B. Porosity characterization of Argiudolls under different management systems in the Argentine Flat Pampa.

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Usually Ks and S1 exhibit similar tendency Abrisqueta et al. According to Reynolds et al. A single-ring and double- or concentric-ring infiltrometers. Its flora includes gentiansclubmossesvaleriansand asters such as Loricaria and Chuquiraga species. Analysis of steady flow. For the butterfly genus, see Paramo genus.


In the case of infiltration and hydrophysical attributes, the construction of spatial models permits the planning and localized management of the water in the irrigation processes, according to soil characteristics and crop supplies Martins et al. The theory of infiltration: Plant Soil and Environment Evaluation of some infiltration models and hydraulic parameters. Physical and hydraulic characterization of a clay soil at the plot scale.

The Andes also play a key role in the climate of these regions as they cause an orographic uplift in which moist air rises. The bounded models are those of greater application in the spatial variability study andisolee the soil attributes.

Organic content, even within disturbed sites averages very high which contributes to water retention in the soil. The objective of the present study was to characterize the spatial variability of the surface infiltration and its relation to some soil physical attributes Typic Haplustox in the Eastern Plains Llanos Orientales of Colombia, using statistical methods, which support the localized anisoles of soil and water in agricultural systems that are within the framework of the precision agriculture.

Equations 4, 5, and 6 show the expressions that define the spherical, exponential and Gaussian semivariograms, respectively.

Soil Science Society of America Journal Pearson correlation of soil attributes. Statistics for spatial data. Geostatistical analysis of sorptivity for a soil under tilled and no-tilled conditions.

Reptiles include lizards of the genera StenocercusPhenacosaurusand Proctoporus.

The use of these techniques has limitations, since soil attributes are analyzed individually and does not identify the different interactions between them Boruvka et al. From Wikipedia, the free encyclopedia.

The sampling was done with a rectangular mesh of 64 points with perpendicular distances of 52 m x 45 m between sampling points. Data were analyzed using descriptive statistics and geostatistics, identifying the relationship between attributes, using the Pearson correlation and cluster analysis.