Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 327415
Title Wind erosion in a semiarid agricultural area of Spain: the WELSONS project
Author(s) Gomes, L.; Arrue, J.L.; Lopez, M.V.; Sterk, G.; Richard, D.; Gracia, R.; Sabre, M.; Gaudichet, A.; Frangi, J.P.
Source Catena 52 (2003). - ISSN 0341-8162 - p. 235 - 256.
DOI http://dx.doi.org/10.1016/S0341-8162(03)00016-X
Department(s) Land Degradation and Development
PE&RC
Publication type Refereed Article in a scientific journal
Publication year 2003
Keyword(s) atmospheric boundary-layer - size distribution - dust production - soil - transport - emission - sediment - tillage - aragon - niger
Abstract The co-ordinated European research project Wind Erosion and Loss of SOil Nutrients in semiarid Spain (WELSONS) was carried out from 1996 to 1999 to understand and predict the potential impacts of land-use change and management on soil degradation by wind erosion on agricultural land in Central Aragon, a semiarid desertification-threatened region in NE Spain. This paper gives a description of the project's experimental approach and an overview of the main results regarding the effects of agricultural practices (i.e. conventional, CT, versus reduced tillage, RT) on surface conditions affecting wind erosion, the mobilisation of soil particles in the saltation layer and the atmospheric emission of fine dust into the suspension layer. The characterisation of the soil surface showed that soil erodibility by wind under RT was lower than that under CT. Though strong Cierzo wind events occurred during the experimental period, only a limited amount of material was available for wind erosion mainly due to soil crusting, a common feature in the area. In spite of this, saltation transport flux was measured at CT plots for different erosion episodes. Also, significant vertical emission of dust was observed only in the CT plot. Finally, the sandblasting efficiency calculated in the present experiment could be interpreted as the result of a higher binding energy for the particles of the silt loam experimental soil compared to soils with a lighter texture.
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