中文摘要：

文章基于竞租函数的基本思想，从理论上探索了办公与居住用地开发的空间演变机理，并以北京市为例进行了实证研究。研究结果表明：办公用地的价格梯度明显高于居住用地，并且办公用地的开发区位更靠近市中心；一定区域内．价格相对较高的土地利用类型，其开发量相对较大；实证结果同时发现了资本和土地之间的替代效应以及办公用地开发的集聚经济。研究结论认为：随着我国土地市场的发展和成熟，市场力量在土地开发模式中发挥着日益显著的作用：土地价格成为影响土地开发量、开发区位以及开发强度的重要信号。

英文摘要：

The purpose of this study is to explore the spatial evolution of office and residential land development based on bid-rent functions, and then make an empirical study by taking the case of Beijing. Methods of theoretical analysis, econometric models and GIS technology are employed. The results indicate that office land developments have higher price gradients and closer locations to the city center compared to residential land developments, and larger development scales may happen to the land use with relatively higher price in certain regions. In addition, the empirical studies provide evidence to asset-land substitution and agglomeration economies for office land development. With the development of land market in China, market forces may play an increasingly important role in land development, and land price may influence land development scales, location variations and development intensity.