SOIL DEGRADATION IN A SEMI-ARID ENVIRONMENT IN KENYA:THE MUKOGODO CATCHMENT CASE STUDY

The objectives of this study were to assess the impact of soil erosion on the physicaland chemical characteristics and the fertility status of the soils of the catchment and to alsostudy the soil properties that have accelerated the formation and the development of gulliesand tunnels in this area. This catchment of study covers 252 hectares and the major soils covering the area

肯尼亚半干旱地区土壤退化——以Mukogodo流域为例

本文的目的是评价该流域侵蚀对土壤理化性质和肥力状况的影响,研究促使本区沟谷、河道形成和发展的土壤性状。研究流域面积为252公顷,主要土壤是铬淋溶土(chromic lixisols)和铬铁淋溶土(chromo-Ferric lixisols),在高地有铬始成土,在沟谷分布冲积土。淋溶土和始成土具有色度为5YR到10R的红色,所有土壤均有钠层,淋溶土主要分布在坡脚和山地。