An Ecological Study of the Hontane Grassland Vegetation in Holmzra Horeda
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Date
1980-07
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Addis Ababa University
Abstract
A study of the erasslands in \/olmera \Iereda was made from A
August 1979 to October 1979. One hundred and twenty stands were
systematically sampled and the occurence of 118 plant species in the
stands recorded. Some environmental factors were recorded and soil
samples collected.
Computations of the clas~ification of the vegetation using the
Association Analysis Technique was made at the University of
Manchester Regional Computer Center.
Four distinct vegetation types were tentatively identified from
the dendrogram at higher levels of the classificatory hierarchy and
were statistically tested for significant contrasts.
Gradients of soil pH, conductivity, hue, and cation content are
positively correlated with a decreasing drainago gradient and these
are negatively corrclatod with an increasing grazing gradient.
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Keywords
Biology