id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
afs-5796	PAASONEN-KIVEKÄS, M.; YLI-HALLA, M.	A comparison of nitrogen and carbon reserves in acid sulphate and non acid sulphate soils in western Finland	2005	13	.pdf	application/pdf	8351	475	71	However, in acid soils (pH < 4), production of NO3 --N has been reported to occur probably due to heterotrophic ni- trifiers (Paul and Clark 1989). Results Soil profiles The three studied profiles in Area A had sulfidic materials in the subsoil, which started at the depth of 140 cm to 200 cm and had its average upper boundary at 170 cm, see Table 1.	cache/afs-5796.pdf	txt/afs-5796.txt