§ 参考文献
[1] Denver's Urban Camping Sites Were Once Fashionable Destinations,Westword
[2] Hoovervilles:Homeless Camps of the Great Depression,ThoughtCo
[3] 'Busiest camping season':Travelers choose outdoor recreation close to home amid COVID-19 pandemic,USA TODAY
[4] How Camping Became the Quintessential American Pastime,Matador
[5] Campground Industry Trends,CBRE
[6] 对话「大热荒野」时正南:今年到营地人次同比翻倍,未来5-10年国内露营渗透率可达5%~10%,明亮公司
[7] 2022露营品质研究报告,马蜂窝