Related and unrelated variety in a tourism context
研究发现旅游目的地中相关产业多样性促进合作生产与创新，而无关多样性则降低合作生产与效率，优化目的地发展需高相关低无关多样性。
•Coproduction and innovation increase in a destination with related industrial variety.•Coproduction and efficiency decrease in a destination with unrelated variety.•High level of related and low level unrelated variety optimize destination development.