文章摘要
  
DOI：10.3969/j.issn.1004-874X.2009.03.051
Author NameAffiliation
张晋, 孙鹏举, 刘学录 甘肃农业大学资源与环境学院,甘肃,兰州,730070
甘肃省国土资源规划研究院,甘肃,兰州,730000 
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