Picea mongolica W.D.Xu is an endemic and endangered species which is only found in semi-add areas of northern China.It h......

通过实地考察和标本的研究鉴定,衡水湖湿地被子植物共有55科、166属、271种（含种下等级），本区被子植物生活型以地面芽植物和一年生植......