Variations in some soil properties because of the land use change in the middle and low parts of the Membrillo micro-watershed, Manabi, Ecuador
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Abstract
from forest lands to cultivated ones, is one of the practices
that have the highest impact in soil degradation in the World
and, besides, provoke a great deal of CO2 emission to the
atmosphere. So that is necessary to evaluate theses changes
that occur in soils properties in different ecosystems, to take
the appropriate conservation measures and improve soil
management. In this paper, for a first time, the change of
some soil properties due to land use change is studied, from
the lowest and middle part of Membrillo micro-watershed
in Manabí province, Ecuador. This micro-watershed has a
hilly to premountian relief where primary and secondary
forests, cocoa plantations and lands under maize cultivation
are predominant, in the lowest part. The soils are Phaeozems,
Cambisols and Fluvisols. In this paper we present the
results obtained related to changes on soil morphological
characteristics (color, structure and the A y B horizon
thickness), organic carbon lost and the change on volume
density, provoked by land use change.
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