Abstract
The DEA-Malmquist model was used to measure the ecotourism efficiency of 13 cities in Jiangsu Province from 2010 to 2020, and the spatial and temporal differences were further analysed. The results show that the tourism technical efficiency in Jiangsu Province in China is generally at a high level, and the tourism scale efficiency restricts the improvement of tourism technical efficiency. The unbalanced of the technical progress in tourism between the prefecture-level cities is obvious. Overall, the change of technical progress in tourism has the strongest impact on the total factor productivity index. Therefore, strengthening the inter-regional cooperation of tourism development, training of tourism professionals, improving the structure of tourism industry, optimizing the allocation of tourism production factors, and expanding the scale and agglomeration effect of tourism can improve the efficiency of ecotourism.
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