文章摘要
  
DOI：10.3969/j.issn.1004-874X.2012.10.023
Author NameAffiliation
侯芸芸, 曹春, 任海峰, 王继伟, 张宋智, 巨天珍 西北师范大学地理与环境科学学院,甘肃兰州,730070
天水小陇山林业科学研究所,甘肃天水,741020 
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