id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5802	ÅSTRÖM, M.	Preface	2005	2	.pdf	application/pdf	773	21	35	The main reasons for this are that (1) the acid sulphate soil leaching has a diffuse character, i.e., the discharge occurs via hundreds of thousands of small, mostly uni- dentified ditches in coastal areas (mainly in Pohjanmaa (Ostrobothnia), Västerbotten, Norrbotten, and south-western Finland), (2) the acid sulphate soil leaching is complex, i.e., the source of the acids and met- als consists of natural sediments, but the mechanisms mobilizing these compounds are triggered by human activities, (3) the leaching from acid sulphate soils is mainly from agricultural fields, i.e., it is farmland drainage that results in acid sulphate soil development and since agriculture is already experiencing eco- nomic problems, there are political difficulties associated with attempts to highlight the problem. Unfortunately, there are a number of exceptions, and one of these is constituted by acid sulphate soils.	cache/afs-5802.pdf	txt/afs-5802.txt