张家口坝上地区退化杨树防护林改造与配套政策建议
高俊峰, 郑焰锋, 王博宇
Transformation and Countermeasures of Degenerated Poplar Protection Forest in Bashang District of Zhangjiakou City
GAO Junfeng, ZHENG Yanfeng, WANG Boyu
林草资源研究
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2016, (4): 30
-33
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DOI: 10.13466/j.cnki.lyzygl.2016.04.007
