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Migration leads to the separation of rural people from their contracted land and, thus, affects the human–land relationship, agricultural production, and food security in China's rural areas. Using spatial autocorrelation analysis, GeoDetector analysis, and geographical weighted regression, the mechanism by which the migration behavior of the rural population impacts their contracted land disposal methods was analyzed in this study, and the spatial heterogeneity of this mechanism was further revealed from the perspective of geographical differentiation. The results of this study show that: (1) Chinese rural migrants exhibit pronounced geographical differences in the disposition of contracted land. The spatial distribution patterns of family operation, subleasing, and abandonment are different. (2) Migration behavior contributes to the differences in contracted land disposal methods across regions. Educational attainment, the number of cities migrated to, and the house purchase rate significantly contribute to the geographical differences among all three contracted land disposal methods. (3) The mechanisms by which migration behavior influences rural migrants' land disposal decisions vary. The direction and degree of the influence of each factor on family operation are relatively consistent across regions. However, regarding the subleasing and abandonment of contracted land, the mechanisms by which migration behavior influences land disposal decision-making exhibit significant regional heterogeneity. The results of this study provide a useful reference for many countries to solve the problems of the human–land relationship and rural development. [ABSTRACT FROM AUTHOR]

How to effectively promote the large-scale and market-oriented farmland leasing process in China is one of the most important practical issues concerning the current academic circle and decision makers. However, restricted by the current situation of rural social development, farmers' spontaneous and informal farmland leasing is still widespread. Exploring the long-term evolution characteristics of informal farmland leasing at the village scale is of great significance for optimizing the process of farmland leasing, perfecting the farmland leasing market, and promoting moderate-scale farmland management. Therefore, based on field survey data from the whole village and social network analysis methods, this research conducted a detailed empirical study on the characteristics, development process, and consequences of informal farmland leasing behavior in a traditional rural society in central China. The results show that with the development of time, the scope of informal farmland leasing in Huang village has been expanding, of which more than 70% of the farmland in 2020 was leased among acquaintances. Farmland leasing among acquaintances is becoming a trend toward informal farmland leasing in some villages. At present, 13 large-scale households lease 73.9% of the total area of farmland leasing in Huang village. The informal farmland leasing in the village has basically formed a centralized circulation pattern with the villager group as the core, which can promote moderate-scale farming to a certain extent. However, there are also problems, such as the ability of a simple internal leasing mode to resist external risks is limited. The findings may be helpful in rethinking China's farmland leasing policy and provide useful insights into the multifaceted rural sustainability of other similar traditional villages. [ABSTRACT FROM AUTHOR]