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(Article of periodic en Anglais - 2009)

Document title

Time stability of soil water storage measured by neutron probe and the effects of calibration procedures in a small watershed

Authors(s) and Affiliation(s)

HU W. (1 3) ; SHAO M. (2) ; WANG Q. (2) ; REICHARDT K. (4) ;
(1) Key Lab. of Water Cycle and Related Surface Processes, Inst. of Geographic Sciences and Natural resources Research, CAS, Beijing, CHINE
(2) State Key Lab. of Soil Erosion and Dryland Farming on the Loes Plateau, Inst. of Soil and Water Conservation, CAS, Univ., Yangling, CHINE
(3) Graduate Univ. of Chinese Academy of Sciences, Beijing, CHINE
(4) Lab. of Soil Physics, Center for Nuclear Energy in Agriculture, Univ., São Paulo, BRESIL

Abstract

The knowledge of soil water storage (SWS) of soil profiles is crucial for the adoption of vegetation restoration practices. With the aim of identifying representative sites to obtain the mean SWS of a watershed, a time stability analysis of neutron probe evaluations of SWS was performed by the means of relative differences and Spearman rank correlation coefficients. Correlation analysis showed that the neutron probe calibration was linked to soil bulk density and to organic matter content. Therefore, spatial variability of soil properties should be taken into account during the process of neutron probe calibration. This study provides useful information on the mean SWS observation with a time stable site and on distinct neutron probe calibration procedures, and it should be extended to soil water management studies with neutron probes, e.g., the process of vegetation restoration in wider area and soil types of the Loess Plateau in China

Source

Article of periodic

published at : Catena / ISSN 0341-8162

Editor : Catena, Cremlingen-Destedt - ALLEMAGNE (1973)

Millesime : 2009, vol. 79, no1 [pp. 72-82]

Bibliographic references : 1 p.

Collation : 14 fig., 5 tabl.

Language

Anglais

INIST-CNRS, Cote INIST : 16767

Digital Object Identifier

Go to electronic document thanks to its DOI : doi:10.1016/j.catena.2009.05.012

Tous droits réservés © Prodig - Bibliographie Géographique Internationale (BGI), 2010
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