id	author	title	date	pages	extension	mime	words	sentence	flesch	summary	cache	txt
fennia-3701	Zhou, Ping; Luukkanen, Olavi; Tokola, Timo; Hares, Minna	Comparison of forest stand characteristics and species diversity indices under different human impacts along an altitudinal gradient	2009	14	.pdf	application/pdf	7220	378	63	The utilization of natural forests began here al- ready about 4000 years ago when the Qiang tribes moved into the basin from the northwest of China. 1. Examples of four different levels of human impact: near natural forest (A), selectively logged forest (B), natural regen- eration forest (after clear-cut) (C), and plantation (D).	cache/fennia-3701.pdf	txt/fennia-3701.txt