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Effects of Forest Gaps on the Regeneration Pattern of the Undergrowth of Secondary Poplar-Birch Forests in Southern Greater Xing'an Mountains
LIU Bingbing, ZHAO Pengwu, ZHOU Mei, WANG Yuan, YANG Liu, SHU Yang
Forest and Grassland Resources Research . 2019, (4): 31 -36 .  DOI: 10.13466/j.cnki.lyzygl.2019.04.005