Anne Mette Lykke

Spatial distribution of bowal and differences in physicochemical characteristics between bowal and woodland soils in Benin, West Africa

Publikation: Bidrag til tidsskrift/Konferencebidrag i tidsskrift /Bidrag til avisTidsskriftartikelForskningpeer review

  • Elie A. Padonou, Univ Abomey Calavi, Fac Agron Sci
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  • Yvonne Bachmann, Goethe Univ Frankfurt, Goethe University Frankfurt, Inst Ecol Evolut & Divers
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  • Romain Glele Kakai, Univ Abomey Calavi, Fac Agron Sci
  • ,
  • Anne Mette Lykke
  • Brice Sinsin, Univ Abomey Calavi, Fac Agron Sci
Bowal, is degraded land surface characterized by ferricrete exposure due to soil surface erosion. This study aims at assessing the spatial distribution of bowe in Benin and the physicochemical differences between bowe and soil of adjacent woodlands. Bowe surfaces were identified during field investigations and mapped. Soil samples were taken on the bowe surfaces and nearby woodland. Mann-Whitney test was applied to analyze the different physicochemical characteristics of bowe and woodland. The results show that bowe were directly related to ferruginous soils and rainfall regime. Bowe soils are characterized by significantly lower values of electrical conductivity, organic matter, extractable phosphorus, silt and total nitrogen than woodland soils, while potassium exchangeability of bowe soils is higher. Bowe can be expected wherever ferruginous soils and/or ferricretes are observed under unimodal rainfall regimes condition. The disaggregation of bowe ferricretes may improve the soil physicochemical characteristics and sustain the regrowth of forest under more humid conditions. (C) 2014 Elsevier B.V. All rights reserved.
Sider (fra-til)45-52
Antal sider8
StatusUdgivet - 2015

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