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收稿日期:2018-03-06;改回日期:2018-04-17。
基金项目:四川省教育厅项目:不同尺度条件下紫色土磷素迁移过程与效应(16ZB0311)
作者简介:杨秉珣(1975-),男,四川绵阳人,讲师,研究方向:生态环境与国土资源。E-mail:Bingxun_yang@163.com
通讯作者:董廷旭(1968-),男,四川苍溪人,本科,教授,研究方向:生态评价与GIS等。E-mail:yingxie1025@163.com