Seasonal dynamics of total nitrogen content in Phragmites australis of Baiyangdian wetland
TIAN Zhifu,LIU Cunqi,SU Qian,LI Bo,WANG Junxia
Journal of Hebei University (Natural Science Edition) . 2013, (1): 63 -67 .  DOI: 10.3969/j.issn.1000-1565.2013.01.013