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收稿日期:2009-5-16;
基金项目:教育部博士学科点专项科研基金(20060700004)
作者简介:李婧(1986-),女,陕西汉中人,硕士研究生,研究方向为干旱水文与雨洪侵蚀。E-mail:lijing8615@163.com
通讯作者:李占斌(1962-),男,河南镇平人,教授,博士生导师,研究方向为土壤侵蚀与水土保持。E-mail:zbli@126.com