id	keyword
afs-72770	landscape
afs-72770	field
afs-72770	elements
afs-72770	area
afs-72770	finland
afs-72770	study
afs-72770	analysis
afs-72770	linear
afs-72770	change
afs-72770	diversity
afs-72770	size
afs-72770	period
afs-72770	use