Isoerosivity and erosion risk map for Sicily
作者:
V. FERRO,
G. GIORDANO,
M. IOVINO,
期刊:
Hydrological Sciences Journal
(Taylor Available online 1991)
卷期:
Volume 36,
issue 6
页码: 549-564
ISSN:0262-6667
年代: 1991
DOI:10.1080/02626669109492543
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
This paper reviews simplified methods for evaluating the rainfall erosivity index and proposes two relationships for estimating the annual value of Wischmeier's rainfall erosivity index at sites equipped with recording and non-recording raingauges. For the Sicilian region, the FAO index was also found to represent the erosion risk. A regional relationship to estimate the standard deviation of the annual erosivity index is proposed. The isoerosivity map is plotted by using 41 values of the rainfall erosivity index calculated by Wischmeier's procedure and 128 values estimated according to a relationship proposed by the authors. Finally, for each of 169 sites, an erosion risk index is calculated and an erosion risk map is plotted.
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