id	keyword
american_scientific_journal-8761	coffee
american_scientific_journal-8761	carbon
american_scientific_journal-8761	cropping
american_scientific_journal-8761	agroforestry
american_scientific_journal-8761	biomass
american_scientific_journal-8761	stock
american_scientific_journal-8761	soil
american_scientific_journal-8761	patterns
american_scientific_journal-8761	total