M. Majaliwa, M. Magunda, M. M. Tenywa, M. Isabirye
{"title":"Effect of Topography on Soil Eredibility in Kakuuto Micro-Catchment, Uganda","authors":"M. Majaliwa, M. Magunda, M. M. Tenywa, M. Isabirye","doi":"10.4314/eaafj.v69i1.1802","DOIUrl":null,"url":null,"abstract":"ABSTRACT Soil erodibility is a property that determines the vulnerability of a soil to erosion processes. Interrill erodibility of 7 soil types, haplic Luvisols, haplic Acrisols, skeletic Luvisols, skeletic Acrisols, rhodic skelectic Acrisols, ferric Acrisols, ferri Rhodic Acrisols of Kakuuto micro-catchment of the Lake Victoria basin was measured, and its toposequence pattern investigated using a portable rainfall simulator in the field. Simulated rainfall of 7 mm/min was applied for 5 min on 0.25 by 0.25 m plots; 16 tests were run on each soil type, under 2 moisture regimes (dry and wet). Results indicated that there were 2 groups of no pairewise significant difference in interill erodibility: haplic Acrisols, haplic Luvisols, Rhodic skeletic Acrisols, and skeletic Acrisols, ferric Acrisols, ferri rhodic Acrisols and skeletic Luvisols (p=0.011) being the second. The first group was more eroded than the second. Significant differences (p=0.05) were observed along the toposequence on interrill erodibility with an increase towards the footslope. The footslope interrill erodibility was 4.13 × 106kg/m2s while values of 1.05 × 106/kgm4s and 1.74 × 106/kg/m2s were observed at the upper and the middle landscape position; respectively.","PeriodicalId":11421,"journal":{"name":"East African Agricultural and Forestry Journal","volume":"125 1","pages":"19 - 27"},"PeriodicalIF":0.0000,"publicationDate":"2003-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"East African Agricultural and Forestry Journal","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.4314/eaafj.v69i1.1802","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 2
Abstract
ABSTRACT Soil erodibility is a property that determines the vulnerability of a soil to erosion processes. Interrill erodibility of 7 soil types, haplic Luvisols, haplic Acrisols, skeletic Luvisols, skeletic Acrisols, rhodic skelectic Acrisols, ferric Acrisols, ferri Rhodic Acrisols of Kakuuto micro-catchment of the Lake Victoria basin was measured, and its toposequence pattern investigated using a portable rainfall simulator in the field. Simulated rainfall of 7 mm/min was applied for 5 min on 0.25 by 0.25 m plots; 16 tests were run on each soil type, under 2 moisture regimes (dry and wet). Results indicated that there were 2 groups of no pairewise significant difference in interill erodibility: haplic Acrisols, haplic Luvisols, Rhodic skeletic Acrisols, and skeletic Acrisols, ferric Acrisols, ferri rhodic Acrisols and skeletic Luvisols (p=0.011) being the second. The first group was more eroded than the second. Significant differences (p=0.05) were observed along the toposequence on interrill erodibility with an increase towards the footslope. The footslope interrill erodibility was 4.13 × 106kg/m2s while values of 1.05 × 106/kgm4s and 1.74 × 106/kg/m2s were observed at the upper and the middle landscape position; respectively.