Soil measurements during HAPEX-Sahel intensive observation period

Cuenca, R H and Brouwer, J and Chanzy, A and Droogers, P and Galle, S and Gaze, S R and Sicot, M and Stricker, H and Angulo-Jaramillo, R and Boyle, S A and Bromley, J and Chebhouni, A G and Cooper, J D and Dixon, A J and Fies, J C and Gandah, M and Gaudu, J C and Laguerre, L and Lecocq, L and Soet, M and Steward, H J and Vandervaere, J P and Vauclini, M (1997) Soil measurements during HAPEX-Sahel intensive observation period. Journal of Hydrology, 188-89. pp. 224-266. ISSN 0022-1694

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Abstract

This article describes measurements made at each site and for each vegetation cover as part of the soils program for the HAPEX-Sahel regional scale experiment. The measurements were based on an initial sampling scheme and included profile soil water content, surface soil water content, soil water potential, infiltration rates, additional measurements on core samples, and grain size analysis. The measurements were used to categorize the state of the surface and profile soil water regimes during the experiment and to derive functional relationships for the soil water characteristic curve, unsaturated hydraulic conductivity function, and infiltration function. Sample results for different supersites and different vegetation covers are presented showing soil water profiles and total soil water storage on days corresponding to the experimental ‘Golden Days’. Sample results are also presented for spatial and temporal distribution of surface moisture content and infiltration tests. The results demonstrate that the major experimental objective of monitoring the supersites during the most rapid vegetative growth stage with the largest change of the surface energy balance following the rainy season was very nearly achieved. Separation of the effects of probable root activity and drainage of the soil profile is possible. The potential for localized advection between the bare soil and vegetation strips of the tiger bush sites is demonstrated

Item Type: Article
Divisions: UNSPECIFIED
CRP: UNSPECIFIED
Subjects: Others > Soil Science
Depositing User: Ms K Syamalamba
Date Deposited: 02 Jun 2014 09:17
Last Modified: 02 Jun 2014 10:51
URI: http://oar.icrisat.org/id/eprint/8075
Official URL: http://dx.doi.org/10.1016/S0022-1694(96)03161-7
Projects: UNSPECIFIED
Funders: UNSPECIFIED
Acknowledgement: UNSPECIFIED
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