Construction Land Expansion and Its Driving Force in Highly Urbanization Areas: A Case Study of Shenzhen City

WANG Hongliang1,2,3,4, GAO Yining2,5, WU Jiansheng 1,2,6,†, WANG Na1,3, ZHAO Yuhao1,6, PENG Zifeng3, WANG Yanglin6

1. Key Laboratory for Urban Habitat Environmental Science and Technology, School of Urban Planning and Design, Peking University Shenzhen Graduate School, Shenzhen 518055; 2. Key Laboratory of Urban Land Resources Monitoring and Simulation, Ministry of Natural Resources, Shenzhen 518040; 3. Shenzhen Municipal Planning and Land Real Estate Information Center, Shenzhen 518044; 4. School of Public Administration, Inner Mongolia University, Hohhot 010070; 5. Science and Technology Management Office, Inner Mongolia Normal University, Hohhot 010022; 6. Key Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, Beijing 100871; † Corresponding author, E-mail: wujs@pkusz.edu.cn

Abstract Based on the survey data of land use change, this paper studies the process and characteristics of urban construction land expansion in Shenzhen from 1996 to 2016 by analyzing the spatial and temporal changes, expansion intensity and landscape pattern of urban construction land, and reveals the spatial differentiation of urban construction land expansion in highly urbanized areas. Regression analysis model is used to explore the driving mechanism of social and economic factors on the expansion of construction land. The results show that the

expansion of construction land in Shenzhen presents a continuous growth trend, and the expansion mode of new construction land is significantly different. Futian District and Luohu District are mainly expanded by interior filling, while Nanshan District and Baoan District are mainly expanded by external expansion. The difference between construction land extension intensity in different regions and the index of landscape pattern indicates that the spatial expansion of construction land is gradually changing from disorder, homogeneity, inefficient spread to orderly, heterogeneous and efficient utilization. Social and economic factors have a significant positive correlation with construction land expansion. The regression coefficient of resident population is the largest (0.578), and that of fixed assets investment is the smallest (0.000). Pearson correlation ranking is Resident population > Industrial structure >GDP> Fixed asset investment, indicating that population plays a decisive role in the expansion of construction land, and fixed asset investment is embodied in the function of connection. Key words construction land expansion; landscape pattern; driving force; high urbanization; Shenzhen city