id	keyword
esrj-102140	soil
esrj-102140	land
esrj-102140	degradation
esrj-102140	area
esrj-102140	study
esrj-102140	gully
esrj-102140	uses
esrj-102140	loss
esrj-102140	nigeria
esrj-102140	et al
esrj-102140	aminu
esrj-102140	soil degradation
esrj-102140	slope
esrj-102140	erosion
esrj-102140	badland
esrj-102140	values
esrj-102140	plantation
esrj-102140	analysis