首页   按字顺浏览 期刊浏览 卷期浏览 An Improved Methodology for Erosion Hazard Mapping Part II: Application to Lesotho
An Improved Methodology for Erosion Hazard Mapping Part II: Application to Lesotho

 

作者: ChakelaQalabane,   StockingMichael,  

 

期刊: Geografiska Annaler: Series A, Physical Geography  (Taylor Available online 1988)
卷期: Volume 70, issue 3  

页码: 181-189

 

ISSN:0435-3676

 

年代: 1988

 

DOI:10.1080/04353676.1988.11880246

 

出版商: Taylor&Francis

 

数据来源: Taylor

 

摘要:

ABSTRACTThe improved erosion hazard methodology presented in Part I of this paper was applied to Lesotho. Values for variables describing the contribution of the major factors in erosion were abstracted from existing topographic, soil and rainfall maps, and from climatic data and crop yield statistics. Using the SLEMSA framework as a model for combining the influence of the variables, the information was organized on a 14×14 km grid to give an erosion hazard map of Lesotho. Practical and methodological difficulties are discussed. Slope and rainfall are the dominant factors, and they largely explain the variation in‘Erosion Hazard Units’from 64 in the southern lowlands to 3230 in the north-eastern mountains. Lesotho is confirmed as having the highest erosion hazard of any single country in southern and central Africa.

 

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