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Abstract：
As a new product of rapid urbanization, the sprawl of urban construction land can objectively reflect urban land use efficiency, which is of great significance to China\'s new urban construction. This study aimed to summarize the expansion patterns and utilization efficiency of urban construction land in China from the perspectives of the status, speed and trends of expansion, and to uncover the key factors that lead to the differential distribution of the expansion of construction land. It can also provide land management experience for other countries with rapid expansion of construction land. The results show the following. (1) The expansion of China\'s construction land presents a \"point-line-plane\" pattern of evolution, forming changing stages of point-like aggregation, linear series and planar spread. (2) China\'s construction land shows the characteristics of disorderly spread, a low utilization rate and low output efficiency. The speed of expansion presents clear characteristics of being high in the east and low in the west, mostly concentrated in the Yangtze River Delta, Pearl River Delta and the Beijing-Tianjin-Hebei urban agglomeration. Shanghai, Beijing, Shenzhen and Guangzhou have the highest intensity of construction land use. In Shandong Peninsula and eastern coastal areas, the intensity of the construction land use is generally high. In Xinjiang and Xizang, the intensity of construction land use is relatively low. (3) The urban economic level, population size, industrial structure, foreign investment and land policies have significant effects on the spatial distribution of the expansion of construction land.
摘要：
作为快速城市化的新产物,城市建设用地的蔓延可以客观反映城市土地利用效率，这对我国新城市建设具有重要意义。本研究旨在总结我国城市建设用地的扩张模式和利用效率现状,扩张的速度和趋势，并揭示导致建设用地扩张差异化分配的关键因素。也可为其他建设用地快速扩张的国家提供土地管理经验。结果显示如下。(1)我国建设用地扩张呈现"点-线-面"的演变格局,形成点状聚集的变化阶段，线性级数和平面展布。(2)我国建设用地呈现出无序扩散的特点,低利用率和低输出效率。扩张速度呈现东高西低的明显特征,主要集中在长江三角洲，珠江三角洲和京津冀城市群。上海,北京,深圳和广州的建设用地使用强度最高。在山东半岛和东部沿海地区，建设用地强度普遍较高。在新疆和西藏，建设用地利用强度相对较低。(3)城市经济水平,人口规模，产业结构,外资和土地政策对建设用地扩张的空间分布有显著影响。
