燕山北部山地绣线菊灌丛生物量研究
纪晓林1,刘乐乐1,李 强2,许中旗2,3
Studies on biomass of Spiraea pubescens shrub in the northregion of Yanshan mountain
JI Xiao-lin1,LIU Le-le2,LI Qiang2,XU Zhong-qi 2,3
河北林果研究 . 2012, (2): 206 -209 .