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收稿日期:2004-7-10;改回日期:。
基金项目:香港特区政府研究资助局支持项目(HKU7017/01E);中国科学院知识创新工程重要方向项目“水蚀预报模型研究”(KZCX3-SW-422);国家自然科学基金资助项目(40271075)
作者简介:胡文生(1973- ),女,博士研究生,主要从事土壤侵蚀和流水地研究。