张北县杨树种群衰退原因初探——以盘城营为例
程月明, 张愿, 崔硕, 马长明
Study on Poplar Degeneration in Zhangbei County,Hebei Province —A case study in Panchengying
CHENG Yueming, ZHANG Yuan, CUI Shuo, MA Changming
林草资源研究
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2015, (1): 152
-155
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DOI: 10.13466/j.cnki.lyzygl.2015.01.027
