field study in the central zone of Chile
Casanova, Manuel P.
(1998).
Influence of slope gradient and aspect on soil hydraulic conductivity measured with tension infiltrometer.
["eprint_fieldopt_monograph_type_und_thesis" not defined].
Uppsala:
(NL, NJ) > Dept. of Soil Sciences (until 081001) > Div. of Hydrotechnics, Sveriges lantbruksuniversitet.
Avdelningsmeddelande / Sveriges lantbruksuniversitet, Institutionen för markvetenskap, Avdelningen för lantbrukets hydroteknik
; 98:3
[Report]
![]() |
PDF
2MB |
Abstract
The tension infiltrometer is a device for measuring unsaturated hydraulic conductivity [KC'!')] in the larger soil pores. By regulating the supply pressure head during infiltration with the help of a bubble tower, it is possible to control the size range of soil pores that transmit water. This technique was used in the characterization of infiltration in two rainfed hillsides (north and south exposure) of the central zone of Chile. The results showed smaller K(Ψ) values for the north exposure, with accentuated differences close to saturation (zero pressure head). These differences may have been attributed to differences in texture and organic matter contents observed for the two exposures. Furthermore, K(Ψ) presented a tendency to increase with increasing slope. This tendency, observed also in complementary laboratory works was to a part explained by the deviation from requirements of measurements on level ground. A way of adjusting for slope influence is proposed. In the field study, after adjustment, the differences in K(Ψ) were attributed to the differences in the vertical and lateral hydraulic conductivity and to the development of surface sealing occurring in low slope plots. Finally, a stepwise regression analysis showed that K(Ψ) parameters were explained by the slope of the hillside and the proportion of textural separates in the soil surface.
Authors/Creators: | Casanova, Manuel P. |
---|---|
Title: | Influence of slope gradient and aspect on soil hydraulic conductivity measured with tension infiltrometer |
Subtitle: | field study in the central zone of Chile |
Series Name/Journal: | Avdelningsmeddelande / Sveriges lantbruksuniversitet, Institutionen för markvetenskap, Avdelningen för lantbrukets hydroteknik |
Year of publishing : | 1998 |
Number: | 98:3 |
Number of Pages: | 50 |
Place of Publication: | Uppsala |
Publisher: | Institutionen för markvetenskap, avdelningen för lantbrukets hydroteknik |
ISSN: | 0282-6569 |
Language: | English |
Publication Type: | Report |
Refereed: | No |
Full Text Status: | Public |
Subjects: | Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Soil science |
Keywords: | tension infiltrometer, rainfed hillsides, slopes, saturated hydraulic conductivity, Chile |
URN:NBN: | urn:nbn:se:slu:epsilon-8-545 |
Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-8-545 |
ID Code: | 4886 |
Department: | (NL, NJ) > Dept. of Soil Sciences (until 081001) > Div. of Hydrotechnics |
Deposited By: | Elisabeth Bölenius |
Deposited On: | 15 Jul 2010 00:00 |
Metadata Last Modified: | 02 Dec 2014 10:34 |
Repository Staff Only: item control page