Arid
DOI10.1016/j.geoderma.2012.11.021
Soil hydraulic information for river basin studies in semi-arid regions
Wosten, J. H. M.1; Verzandvoort, S. J. E.1; Leenaars, J. G. B.2; Hoogland, T.1; Wesseling, J. G.1
通讯作者Wosten, J. H. M.
来源期刊GEODERMA
ISSN0016-7061
出版年2013
卷号195页码:79-86
英文摘要

Water retention and hydraulic conductivity characteristics of the soil are indispensable for hydrological catchment modelling and for quantifying water limited agricultural production. However, these characteristics are often not available for regions and data scarcity for tropical zones is even bigger than for temperate zones. Use of pedotransfer functions which translate soil survey data into soil hydraulic characteristics is an interesting alternative in such cases. In this study, existing pedotransfer functions are identified and their performance is tested for the Limpopo river basin in Africa where distribution of limited water resources is a major challenge. The well performing pedotransfer function developed by Hodnett and Tomasella (2002) was used to translate the map units of the soil and terrain (SOTER) database for southern Africa into hydrological response units. Ten functional soil characteristics were calculated and clustering resulted in a reduction of the 713 SOTER map units for the Limpopo river basin to 14 hydrological response units. The resulting hydrological response unit map provides the required spatial information on soil physical input data, both water retention and hydraulic conductivity, for hydrological modelling of the river basin as well as for assessment of agricultural production. The developed procedure is an attractive approach for other, similar data scarce environments. (c) 2012 Elsevier B.V. All rights reserved.


英文关键词Pedotransfer function Van Genuchten parameters SOTER map unit Cluster analysis Hydrological response unit Soil mapping
类型Article
语种英语
国家Netherlands
收录类别SCI-E
WOS记录号WOS:000316307200009
WOS关键词PEDOTRANSFER FUNCTIONS
WOS类目Soil Science
WOS研究方向Agriculture
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/177328
作者单位1.Alterra Wageningen Univ & Res Ctr, NL-6700 AA Wageningen, Netherlands;
2.ISRIC World Soil Informat, NL-6700 AJ Wageningen, Netherlands
推荐引用方式
GB/T 7714
Wosten, J. H. M.,Verzandvoort, S. J. E.,Leenaars, J. G. B.,et al. Soil hydraulic information for river basin studies in semi-arid regions[J],2013,195:79-86.
APA Wosten, J. H. M.,Verzandvoort, S. J. E.,Leenaars, J. G. B.,Hoogland, T.,&Wesseling, J. G..(2013).Soil hydraulic information for river basin studies in semi-arid regions.GEODERMA,195,79-86.
MLA Wosten, J. H. M.,et al."Soil hydraulic information for river basin studies in semi-arid regions".GEODERMA 195(2013):79-86.
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