旅游活动与水环境耦合分析——以玉龙雪山-丽江盆地为例
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Coupling analysis of tourism activities and water environment: a case study of Yulong Snow Mountain-Lijiang basin
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图4. 2018年丽江市三义采样点水体污染指标变化 |
Fig.4. Change of water pollution index of Sanyi sampling point in Lijiang City in 2018 |
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