Terraces are the major vehicle for agricultural activities in mountainous areas and are an important component of the agro-cultural heritage landscape. This work explores tourists’ perceived attitudes toward, and characteristics of terraced agro-cultural heritage landscapes based on online web travel notes. A framework of visitor perception types of terraced agricultural cultural heritage landscapes was constructed, and each type was analyzed in a targeted manner. The results obtained can provide a reference for the conservation of heritage farming culture and the development of strategies to improve landscape quality for such sites. This study used crawler software to collect online travelogue data from 3991 notes by visitors to seven note-worthy terraced agro-cultural heritage sites in China and used the ROST Content Mining 6 tool to analyze high-frequency feature words, semantic networks, and sentiment distribution and ten-dency. We found that the tourist perception of the diversity of terraced agro-cultural heritage landscape is rich, with a high overall evaluation. The tourists‘ perceptions focused on four elements: landscape, ecology, culture, and service. They were more likely to have a high perception of the landscape than service, which in turn was higher than culture and ecology. The emotional tendency of tourists‘ perceptions is mainly highly positive and neutral, and negative emotions account for a lower proportion and are mostly mild.

Scientific understanding of the evolution law of territorial space patterns and the ability to reveal the formation mechanism hold great significance for the sustainable utilization of territorial resources and the high-quality green development of the Yangtze River Economic Belt (YREB). In this study, we used the spatial chord diagram, landscape pattern index, and geographical probe to explore the evolution characteristics and formation mechanism of the territorial space pattern of the YREB from 2000 to 2020. The results showed the following: (1) The territorial space showed obvious geographical hierarchical distribution characteristics in the topographic gradient. Production and living space was dominant throughout the low and middle terrain region. Ecological space was dominant throughout the high-terrain regions. With the increase of altitude and slope, production and living space contracted, whereas ecological space areas expanded. (2) Since 2000, the territorial space has changed more dramatically. Over time, living space tended to increase, and production and ecological space tended to decrease, but ecological space was always dominant. In space, the geographical differentiation of territorial space was more obvious, and the pattern was relatively stable, with production space distributed primarily in the middle and lower reaches, living space distributed primarily in the lower reaches, and ecological space distributed primarily in the middle and upper reaches. The inter-transformation between territorial spaces was more frequent, and the transformation trajectory was diversified. (3) The fragmentation, heterogeneity, and dispersion of territorial space landscape patches throughout the whole region increased, and the balance and diversity of territorial space utilization improved. (4) Natural factors have continued to weaken the intensity of their effect on territorial space. Human factors gradually increased the extent of their interference in the territorial space. There are significant differences in the extent of the role of these different factors on the territorial space of the whole region and each basin. Natural and human factors jointly promoted the formation and development of the territorial space pattern.

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