Yaowen Xu

Given that the increasing non-agricultural conversion of cultivated land (NACCL) endangers food security, studying the spatial and temporal variation characteristics and driving mechanisms of NACCL in Sichuan Province can offer a scientific foundation for developing local farmland preservation measures and controlling further conversion. Guided by the theoretical framework of land use transition, this study utilizes land use datasets spanning multiple periods between 2000 and 2023. Comprehensively considering population scale factors, natural geographical factors, and socioeconomic factors, the county-level annual NACCL rate is calculated. Following this, the dynamic evolution and underlying driving forces of NACCL across 183 counties in Sichuan Province are examined through temporal and spatial dimensions, utilizing analytical tools including Nonparametric Kernel Density Estimation (KDE) and the Geographical Detector model with Optimal Parameters (OPGD). The study finds that: (1) Overall, NACCL in Sichuan Province exhibits phased temporal fluctuations characterized by “expansion—contraction—re-expansion—strict control,” with cultivated land mainly being converted into urban land, and the differences among counties gradually narrowing. (2) In Sichuan Province, the spatial configuration of NACCL is characterized by the expansion of high-value agglomerations alongside the dispersed and stable distribution of low-value areas. (3) Analysis through the OPGD model indicates that urban construction land dominates the NACCL process in Sichuan Province, and the driving dimension evolves from single to synergistic. The findings of this study offer a systematic examination of the spatiotemporal evolution and underlying drivers of NACCL in Sichuan Province. This analysis provides a scientific basis for formulating region-specific farmland protection policies and supports the optimization of territorial spatial planning systems. The results hold significant practical relevance for promoting the sustainable use of cultivated land resources.

Ecotourism comfort is an important way to promote the harmonious coexistence between humans and nature, and it is the concrete implementation of the concept of harmonious coexistence and the theory of “Two Mountains”. Based on the urban comfort theory, the ecotourism comfort level of Chengdu city from 2010 to 2020 was measured. The MCR model and the gravity model were used to extract the potential corridor of ecotourism comfort to identify the core area of ecotourism comfort, and its configuration path was analyzed through a qualitative comparison of fsQCA fuzzy sets. The findings are as follows: (1) The overall level of ecotourism comfort in Chengdu has been improved, and the spatial distribution has a “core-edge” structure, which has obvious characteristics of “polarization leading and common development”. Among them, Wuhou District, Qingyang District, and Longquanyi District are the core areas, and the driving effect on marginal areas is particularly significant. (2) The potential ecological corridors in Chengdu are more densely distributed in the east than in the west, with significant north–south variations within both regions. (3) The core corridors of ecotourism comfort originate from Xinjin District and Longquanyi District, characterized by a banded distribution and primarily concentrated along the southwest–northeast axis. (4) The high level of ecotourism comfort in Chengdu is primarily manifested in five distinct types: “comprehensive drive, resource–transportation synergy, technology–transportation integration, government–led investment, and tourism market–technology linkage”. The research results offer a theoretical basis and scientific reference for enhancing the comfort level of urban ecotourism and comprehensively promoting the sustainable development of ecotourism.