[1]ZHONG Yanxia,QU Xiangning.Problems of Water Environment and Their Protective Measures in the Sand Lake Tourist Area of Ningxia[J].Research of Soil and Water Conservation,2002,9(03):199-200.
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Problems of Water Environment and Their Protective Measures in the Sand Lake Tourist Area of Ningxia

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[1]宁夏回族自治区环境保护研究所, 宁夏沙湖自然保护区管理局.宁夏沙湖自然保护区综合考察报告[R].1999, 3-4.
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[3]刘家民.旅游生态及其规划的研究发展[J].应用生态学报, 1998, 9(3):327-331.
[4]吴必虎.旅游生态学与旅游目的地的可持续发展[J].生态学杂志, 1996, 15(2):37-43.
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