Article Sidebar
Published:
Dec 29, 2014DOI:
10.4314/njt.v34i1.7Keywords:
Article Details
Copyright belongs to the Faculty of Engineering, University of Nigeria, Nsukka, Nigeria
The contents of the articles are the sole opinion of the author(s) and not of NIJOTECH.
NIJOTECH allows open access for distribution of the published articles in any media so long as whole (not part) of articles are distributed.
A copyright and statement of originality documents will need to be filled out clearly and signed prior to publication of an accepted article. The Copyright form can be downloaded from https://www.nijotech.com/downloads/COPYRIGHT%20FORM.pdf while the Statement of Originality is in Statement of Originality.pdf (nijotech.com)
For articles that were developed from funded research, a clear acknowledgement of such support should be mentioned in the article with relevant references. Authors are expected to provide complete information on the sponsorship and intellectual property rights of the article together with all exceptions.
It is forbidden to publish the same research report in more than one journal.
Main Article Content
Evaluation of Rainfall Erosivity Index for Abuja, Nigeria Using Lombardi Method
Abstract
Rainfall erosivity index is one of the important factors influencing soil erosion. Erosivity index for Abuja, Nigeria was evaluated using the Lombadi method. Twelve (12) years rainfall data (2001 – 2012) used was obtained from Nigerian Meteorological Agency (NIMET) Abuja. Daily kinetic energy – intensity interaction was computed using EI = 1.03Vd1.51. The results showed that the average annual rainfall erosivity index for the city for the period of study was 1131.86 MJmm/hr. The correlation between annual erosivity index and average annual precipitation was expressed as Y = 8.2209X + 34.659. The coefficient of Determination R2 was 0.5011. During this period, the month of August (in all the years) had the highest erosivity index except for 2001, 2002, 2005 and 2008. The analysis of rainfall seasonal distribution showed that the most intensive erosion menace in the area can be expected in August, especially in the areas that are not protected by vegetation cover, which also depends on the climatic change. It is recommended that soil surfaces should not be left bare.
