id	keyword
esrj-69904	soil
esrj-69904	land
esrj-69904	cover
esrj-69904	area
esrj-69904	erosion
esrj-69904	factor
esrj-69904	monteiro
esrj-69904	region
esrj-69904	silva
esrj-69904	caatinga
esrj-69904	land cover
esrj-69904	brazil
esrj-69904	study
esrj-69904	et al
esrj-69904	loss
esrj-69904	arid
esrj-69904	values
esrj-69904	vegetation
esrj-69904	changes
esrj-69904	journal