Electronic Journal of Polish Agricultural Universities (EJPAU) founded by all Polish Agriculture Universities presents original papers and review articles relevant to all aspects of agricultural sciences. It is target for persons working both in science and industry,regulatory agencies or teaching in agricultural sector. Covered by IFIS Publishing (Food Science and Technology Abstracts), ELSEVIER Science - Food Science and Technology Program, CAS USA (Chemical Abstracts), CABI Publishing UK and ALPSP (Association of Learned and Professional Society Publisher - full membership). Presented in the Master List of Thomson ISI.
2007
Volume 10
Issue 1
Topic:
Environmental Development
ELECTRONIC
JOURNAL OF
POLISH
AGRICULTURAL
UNIVERSITIES
Spychalski M. , Ka╝mierowski C. , Kaczmarek Z. 2007. ESTIMATION OF SATURATED HYDRAULIC CONDUCTIVITY ON THE BASIS OF DRAINAGE POROSITY, EJPAU 10(1), #04.
Available Online: http://www.ejpau.media.pl/volume10/issue1/abs-04.html

ESTIMATION OF SATURATED HYDRAULIC CONDUCTIVITY ON THE BASIS OF DRAINAGE POROSITY

Marek Spychalski1, Cezary Ka╝mierowski2, Zbigniew Kaczmarek3
1 Department of Soil Science and Land Reclamation, Agricultural University of Poznan, Poland
2 Department of Soil Science and Remote Sensing of Soils, UAM, Poznan, Poland
3 Department of Soil Science, Agricultural University of Poznan, Poland

 

ABSTRACT



The paper presents relations between drainage porosity (nd) and the saturated hydraulic conductivity (Ks). The undisturbed soil samples were characterised by the saturated hydraulic conductivity, water retention curve (WRC) and estimated sum of the soil macro and mesopores known as the drainage porosity. The latter sum was estimated from the pF curves as a difference between the total porosity (t) and the field capacity (FC). Two equations describing these relationships were proposed and the coefficients of the power function of Ahuja et al. [1, 2] were modified. The equations proposed were tested on the original data set and on the independent selected UNSODA data set [23] and compared with other previously published pedotransfer functions (PTFs). The results of the comparative analysis have shown that for 0.03 < d<0.30 m3 × m-3, the equation proposed in this paper provides a more accurate assessment of the saturated hydraulic conductivity. It has been also shown that the relation derived is universal and does not depend on the soil texture.

Key words: saturated hydraulic conductivity, drainage porosity, pedotransfer function.


Marek Spychalski
Department of Soil Science and Land Reclamation,
Agricultural University of Poznan, Poland
Piatkowska 94, 61-691 Poznan, Poland
Phone: 61-846-6440
email: marspych@ au. poznan. pl

Cezary Ka╝mierowski
Department of Soil Science and Remote Sensing of Soils,
UAM, Poznan, Poland
Dziegielowa 27, 61-680 Poznan, Poland

Zbigniew Kaczmarek
Department of Soil Science,
Agricultural University of Poznan, Poland
Mazowiecka 42, 60-623 Poznan, Poland

Responses to this article, comments are invited and should be submitted within three months of the publication of the article. If accepted for publication, they will be published in the chapter headed 'Discussions' and hyperlinked to the article.