随着社会经济增长及旅游活动的普及，旅游市场需求发生着快速变化。
With the development of economy and tourism, people's demand on tourist market changes rapidly.
第一转折点的出现与流域社会经济因素的变化有密切的关系；
The first break can be related to the change in socioeconomic factors.
与所有社会经济变革相同，这些变化同时也带来了机遇和挑战。
Like all socioeconomic change, they bring both opportunity and challenge.
与所有社会经济变革相同，这些变化同时也带来了机遇和挑战。
Like all socioeconomic change, they bring both opportunity and challenge.
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