The Spatial-Temporal Characteristics of Urban Construction Land Expansion in Wuhan, Central China

Qianwen Han,Yue Chen,Shanshan Hu,Yuanyuan Ke,Yan Yu,Yan Tong,C.-H Weng,R Weerasinghe

doi:10.1051/e3sconf/20185303071

Abstract

Data of construction land in Wuhan city were obtained from remote sensing image in different periods. Based on the spatial analysis function of GIS, the characteristics of construction land expansion were identified by several methods to analyse the spatial-temporal features of Wuhan city area from 1995 to 2015, which included expansion speed, expansion elasticity, contribution rate of expansion, centre-ofgravity shift, and quadrant orientation. The results showed that the construction land area increased gradually from 1995 to 2015 in Wuhan city, and the expansion speed first increased and then decreased. The direction of construction land expansion in Wuhan city was expanded to the southwest significantly. The construction land expansion can’t meet the needs of population growth. Jiangxia district contributed most to the expansion of Wuhan city.

Highlights

With the accelerating process of urbanization, the expansion of urban construction land (UCL) has become more and more difficult to control
Since 1995, the construction land in Wuhan city expanded by nearly 40%
This indicated that the expansion of UCL in Wuhan city was faster than the population growth

Summary

Introduction

With the accelerating process of urbanization, the expansion of urban construction land (UCL) has become more and more difficult to control. Liu and Li et al [6,7,8,9] had simulated urban expansion based on the landscape ecology theory. Pan et al [10] had examined the characteristics of urban expansion by applying the relevant theory. There are few of studies on the characteristics of spatialtemporal such as expansion rate, expansion intensity and development direction of urban construction land. Under such a circumstance, we have explored the development law of construction land since 1995 in Wuhan city, which could provide a reference for policymakers to achieve sustainable development in Wuhan city

Study area and data

Temporal variation of urban construction land expansion

Expansion speed of urban construction land

Expansion elasticity of urban construction land

Findings

Conclusions