Abstract:

Before the start of the fertilization experiment in February 2008 all 24 plots (X=control; N=urea, P=rockphosphate P; NP= combination of both fertilizer with 6 plots per treatment respectively) were sampled and soil properties were analyzed in 3 soil depths (0-5, 5-10, 10-20 cm).

Abstract:

These results display the chemical and physical features of soil profiles which were investigated in november of 2005. The profiles were later on classified with the WRB 2006.

Abstract:

Soil texture sampled from different horizons in Q5 and analysed in the laboratory of the University of Bayreuth (Germany)

Abstract:

Soil texture comprising sand, silt, and clay sampled in pasture site. Samples were analysed in the soil physics laboratory of Bayreuth University.

Abstract:

Soil texture comprising sand, silt, and clay sampled in llasipa site. Samples were analysed in the soil physics laboratory of Bayreuth University.

Abstract:

Soil texture comprising sand, silt, and clay sampled in young landslide. Samples were analysed in the soil physics laboratory of Bayreuth University.

Abstract:

Soil texture comprising sand, silt, and clay sampled in pasture site. Samples were analysed in the soil physics laboratory of Bayreuth University.

Abstract:

Soil texture comprising sand, silt, and clay sampled in secundary forest in microcatchment 1. Samples were analysed in the soil physics laboratory of Bayreuth University.

Abstract:

Abstract:

The soil texture of the San Francisco catchment was regionalised by Random Forest methodology. Data from the topsoil of 212 soil profiles was used to supervise the regionalisation process. In addition to the dataset used by Ließ (2011; PhD thesis included in the database: http://www.tropicalmountainforest.org/publications.do?citid=1017 ), additional soil samples were taken by AG Frede (David Windhorst and Felix Altmann) and analysed by AG Huwe in Bayreuth by pipette methodology. The terrain parameters: elevation, aspect, convergence, valley depth, normalised height, Saga Wetness Index, Topographic Ruggedness Index, wind effect and LS Factor were used as predictive parameters. All terrain parameters were calculated from the 10 m resolution digital elevation model (Ungerechts L. (2010): DEM 10m (triangulated from aerial photo - b/w) . Available online (http://www.tropicalmountainforest.org/data_pre.do?citid=901) from DFG-FOR816dw.) by the open source GIS software SAGA . The 50fold texture prediction which was then used to calculate mean and standard deviation was performed  based on random 9/10 subsets of the complete dataset. The models were evaluated by the remaining 1/10 test dataset. The prediction of the clay content was evaluated with a median Pearson's rxy of 0.4, the prediction of the sand content was evaluated with a median rxy=0.34. Maximum rxy reached 0.8 for both, clay and sand content. Silt content was predicted as remaining proportion to 100% after subtraction of clay and sand content.

Abstract:

Soil texture: 
Bodentexturbestimmung nach HARTGE, K.-H. and HORN, R. 1971. Die physikalische Untersuchung von Böden Enke, Stuttgart und DAY, P.R. (1965): Particle fractionation and particle-size analysis. p. 545-567 In: BLACK, C. A. E. A. (Hrsg.)

Bodentexturklassfizierung nach KA4, AG BODEN 1994. Bodenkundliche Kartieranleitung. 4 ed. Bundesanstalt für Geowissenschaften und Rohstoffe und Geologische Landesämter der Bundesrepublik Deutschland, Hannover.

Retention:
Saugspannungspotenzial/Wasserspannung nach HARTGE, K.-H. and HORN, R. 1971. Die physikalische Untersuchung von Böden Enke, Stuttgart.

Bulk density:
Lagerungsdichte nach HARTGE, K.H. and HORN, R. 1999. Einführung in die Bodenphysik. 3 ed. Enke, Stuttgart.

Saturated hydrological conductivity:
Gesättigte Leitfähigkeit: constant head und falling head nach Reynolds.

Abstract:

Soil samples were taken from 6 randomly selected plots in three soil depths (0-5, 5-10, 10-20 cm) at a 8 year old Setaria-pasture. At each plot 6-10 soil cores (6 cm in diameter) were taken and each soil depth was mixed to one sample.

Abstract:

Soil samples were taken from 6 randomly selected plots in three soil depths (0-5, 5-10, 10-20 cm) at a 50 year old Setaria-pasture. At each plot 6-10 soil cores (6 cm in diameter) were taken and each soil depth was mixed to one sample.

Abstract:

Basic soil physical and chemical characteristics in El Tambo are presented. Land-use comproses of intensive irrigated cash crops like maize, tomato, cucumber and pepper.

Abstract:

Soil samples were taken from 4  plots of each treatment in three soil depths (0-5, 5-10, 10-20 cm) at the repastorization experimental site (see Roos et al. 2010. At each plot 6 soil cores (6 cm in diameter) were taken and each soil depth was mixed to one sample.

Abstract:

The dataset includes physical properties of the mineral soils on forest and pasture core plots in Bombuscaro during the sampling campaigns in 2018 and 2019. Three soil profiles were established on each core plot. Respresentative samples were taken from each horizon, dried and transported to Germany for laboratory analyses. Bulk density was measured in the topsoil with undisturbed soil cores. Soil texture was measured with a combined sieving and pipetting method after oxidation of organic matter and chemical dispersion of aggregates.

Abstract:

The dataset includes physical properties of the mineral soils on forest and pasture core plots in San Francisco during the sampling campaigns in 2018 and 2019. Three soil profiles were established on each core plot. Respresentative samples were taken from each horizon, dried and transported to Germany for laboratory analyses. Bulk density was measured in the topsoil with undisturbed soil cores. Soil texture was measured with a combined sieving and pipetting method after oxidation of organic matter and chemical dispersion of aggregates.