von Thunen model

例句：

1. 1. The von Thunen model has been widely used in agricultural planning.
   冯·屠能模型在农业规划中被广泛使用。
2. 2. The von Thunen model is a useful tool for analyzing the spatial distribution of land use.
   冯·屠能模型是分析土地利用空间分布的有用工具。
3. 3.The von Thunen model has been criticized for its limitations in predicting future population growth.
   冯·屠能模型因其预测未来人口增长的局限性而受到批评。