Table 2 Driving factors of the farmland spatial transition.
Dimensions | Primary indicators | Secondary indicators | Code | Selection reason |
|---|---|---|---|---|
Natural factors | Farmland endowment | Usable farmland area | farml | Providing the fundamental material basis |
Topography and landforms | Elevation | dem | Influencing the spatial distribution and utilization level of farmland | |
Slope | slope | |||
Climatic conditions | Cropping system | cropping | Representing the climatic conditions | |
Institutional factors | Farmland policies | Major crop-producing areas | mcpa | Closely related to inclusion in major grain-producing areas, land transfer policies, and grain subsidies |
Economic factors | Agricultural economic development | Per capita agricultural GDP | pcaov | Providing the economic environment |
Agricultural yield per unit | ypna | Providing the market environment | ||
Fixed asset investment | Per capita fixed asset investment | fai | Providing the capital environment | |
Industrial structure | Proportion of the primary sector | vaa | Providing the industrial environment | |
Population factors | Population density | Average population density per land unit | apd | Reflects the quantity and quality of labor influencing farmland utilization and mode |
Urbanization rate | Percentage of urban population | up | ||
Population influx and outflow rates | Population influx rate | rip | ||
Population quality | Student-teacher ratio in primary education | tprfe |
