Land use and soil development in southern Chile: Effects on physical properties
Different physical properties of volcanic ash soils were investigated along a transect of 120 km from the western slope of the Central Cordilleras (40°20'S, 72°06'W) to the eastern slope of the Costal Cordillera (39°39'S, 73°11'W) in southern Chile with respect to the degree of s...
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| Lenguaje: | English |
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Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
2016
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oai:scielo:S0718-951620160003000182017-02-07Land use and soil development in southern Chile: Effects on physical propertiesFleige,HBeck-Broichsitter,SDörner,JGoebel,M.-OBachmann,JHorn,R Andosol Arenosol hydraulic conductivity precompression stress stress strain behavior Different physical properties of volcanic ash soils were investigated along a transect of 120 km from the western slope of the Central Cordilleras (40°20'S, 72°06'W) to the eastern slope of the Costal Cordillera (39°39'S, 73°11'W) in southern Chile with respect to the degree of soil development (Arenosol versus Andosol stage; Arenosol: young volcanic ash soil, free of clay, tephric properties, Andosol: older volcanic soil, clayey). The Andosols show a higher total pore volume and a higher field capacity, especially due to an increase in fine pores, than the Arenosols. Furthermore, the precompression stress (Pc) as a parameter for the mechanical soil strength is higher for Andosols despite of a lower bulk density. A land use (cropland, meadow, forest) dependent variation of the investigated parameters was less distinct for Andosols. A reduction of macropores and saturated hydraulic conductivity (ks) due to agriculture could be determined in the field, but in general the values are still on a high level with ks-values >100 cm d-1. However, at higher stresses using an oedometer test the ks-values of the Andosols are highly negatively affected with values <10 cm d-1. Aggregation is of major importance for soil stability of Andosols, whereas a homogenization of soil structure will lead to a distinct decrease of Pc of approx. 50%.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.16 n.3 20162016-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000300018en10.4067/S0718-95162016005000058 |
| institution |
Scielo Chile |
| collection |
Scielo Chile |
| language |
English |
| topic |
Andosol Arenosol hydraulic conductivity precompression stress stress strain behavior |
| spellingShingle |
Andosol Arenosol hydraulic conductivity precompression stress stress strain behavior Fleige,H Beck-Broichsitter,S Dörner,J Goebel,M.-O Bachmann,J Horn,R Land use and soil development in southern Chile: Effects on physical properties |
| description |
Different physical properties of volcanic ash soils were investigated along a transect of 120 km from the western slope of the Central Cordilleras (40°20'S, 72°06'W) to the eastern slope of the Costal Cordillera (39°39'S, 73°11'W) in southern Chile with respect to the degree of soil development (Arenosol versus Andosol stage; Arenosol: young volcanic ash soil, free of clay, tephric properties, Andosol: older volcanic soil, clayey). The Andosols show a higher total pore volume and a higher field capacity, especially due to an increase in fine pores, than the Arenosols. Furthermore, the precompression stress (Pc) as a parameter for the mechanical soil strength is higher for Andosols despite of a lower bulk density. A land use (cropland, meadow, forest) dependent variation of the investigated parameters was less distinct for Andosols. A reduction of macropores and saturated hydraulic conductivity (ks) due to agriculture could be determined in the field, but in general the values are still on a high level with ks-values >100 cm d-1. However, at higher stresses using an oedometer test the ks-values of the Andosols are highly negatively affected with values <10 cm d-1. Aggregation is of major importance for soil stability of Andosols, whereas a homogenization of soil structure will lead to a distinct decrease of Pc of approx. 50%. |
| author |
Fleige,H Beck-Broichsitter,S Dörner,J Goebel,M.-O Bachmann,J Horn,R |
| author_facet |
Fleige,H Beck-Broichsitter,S Dörner,J Goebel,M.-O Bachmann,J Horn,R |
| author_sort |
Fleige,H |
| title |
Land use and soil development in southern Chile: Effects on physical properties |
| title_short |
Land use and soil development in southern Chile: Effects on physical properties |
| title_full |
Land use and soil development in southern Chile: Effects on physical properties |
| title_fullStr |
Land use and soil development in southern Chile: Effects on physical properties |
| title_full_unstemmed |
Land use and soil development in southern Chile: Effects on physical properties |
| title_sort |
land use and soil development in southern chile: effects on physical properties |
| publisher |
Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo |
| publishDate |
2016 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000300018 |
| work_keys_str_mv |
AT fleigeh landuseandsoildevelopmentinsouthernchileeffectsonphysicalproperties AT beckbroichsitters landuseandsoildevelopmentinsouthernchileeffectsonphysicalproperties AT dornerj landuseandsoildevelopmentinsouthernchileeffectsonphysicalproperties AT goebelmo landuseandsoildevelopmentinsouthernchileeffectsonphysicalproperties AT bachmannj landuseandsoildevelopmentinsouthernchileeffectsonphysicalproperties AT hornr landuseandsoildevelopmentinsouthernchileeffectsonphysicalproperties |
| _version_ |
1714206540130418688 |