Variation of leaf nitrogen and phosphorus of annual weeds along urban rural gradient and their relationships with soil fertility
DUAN Xiu-Wen, CAI Bei-Ming, CHEN Xiao-Shuang, CUI Yi-Chong, DA Liang-Jun-
Journal of East China Normal University(Natural Science) . 2015, (2): 133 - .  DOI: 10.3969/j.issn.1000-5641.2015.02.016