Distribution characteristics and sustainable utilization of Athyrium multidentatum in Liangshui Nature Reserve, Heilongjiang of northeastern China

Distribution characteristics and aboveground biomass of Athyrium multidentatum were studied for the reasonable suggestion of its sustainable utilization. The results showed that: 1) In Liangshui Nature Reserve, A. multidentatums height, density and aboveground biomass decreased along the increase of elevation. 2) The aboveground biomass of A. multidentatum was significantly different in various forest types, and it in line with sprucefir valley forestriparian miscellaneous forestmanmade forestcostata birchKorean pine forestTiliaKorean pine forestscales spruceKorean pine forestlarch valley forestsprucefirKorean pine forestbirch valley forestmountain Populus davidiana forestMongolian oakKorean pine forest. 3) In different forest types, A. multidentatum aboveground dry weight was also dissimilar. The highest gross reserve was 226 420.1 kg appeared in sprucefir valley forest (496.1 hm2); the lowest gross reserve was 0 appeared in Mongolian oakKorean pine forest (10.0 hm2), and the order of gross reserve was sprucefir valley forestcostata birchKorean pine forestTiliaKorean pine forestriparian miscellaneous forestmanmade forestsprucefirKorean pine forestscales spruceKorean pine forestmountain P. davidiana forestbirch valley forestlarch valley forestMongolian oakKorean pine forest. 4) With the premise of protecting broadleaved Korean pine forest ecosystem, we suggest that choosing sprucefir valley forest, larch valley forest, riparian miscellaneous forest, birch valley forest and manmade forest as the regions for resource utilization of A. multidentatum.