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 2022-02-28 22:56:13

J. Geogr. Sci. 2015, 25(7): 851-864 DOI: 10.1007/s11442-015-1206-7

© 2015 Science Press Springer-Verlag

Spatial expansion and potential of construction land use in the Yangtze River Delta

WANG Zhenbo1,2, *FANG Chuanglin1,2, ZHANG Xiaorui1,3

1. Institute of Geographic Sciences and Natural Resources Research, CAS, Beijing 100101, China; 2. Key Laboratory of Regional Sustainable Development Modeling, CAS, Beijing 100101, China;

3. Department of Urban Planning, Hefei University of Technology, Hefei 230009, China

Abstract: Based on remote sensing data of the Yangtze River Delta (YRD) in the years of 1991, 2001 and 2008, the paper built an index system of land use potential restraint factors in YRD, according to geological condition, terrain condition, water area, natural reserve area and basic farmland, and evaluated construction land potential based on the platform of GIS spatial analysis model. The results showed that: (1) the construction land increased rapidly since 1991 and reached 24,951.21 km2 in 2008, or 21.27% of the total area. Among all the cities in the YRD, Shanghai took the greatest percentage, followed by Jiangsu and Zhejiang. Spatially, areas where government departments are located became the growth center of construction land. Prefecture-level cities were the fastest growth region and the changing trend showed circle layered characteristics and significant increase with Shanghai and Suzhou as the core. (2) The higher the quality of construction land potentials (CLP), the smaller the number of CLP units. High sensitive area accounted for the largest percentage (40.14%) among all types of constraint regions and this was followed by medium sensitive region (31.53%) of the whole region. (3) The comprehensive CLP in the YRD was 24,989.65 km2, or 21.76% of the total YRD. The land use potential showed spatial distribution imbalance. CLP of Zhejiang was obviously larger than that of Jiangsu. CLP was insufficient in regional central city. Moreover, CLP in the YRD formed a circle layered spatial pattern that increasingly expanded centered in prefecture-level cities. Low potential area expanded from north to south. High potential area was mainly located in south YRD. Areas with zero potential in the YRD formed a northwest-southeast “Y-shaped” spatial pattern in north Hangzhou Bay. (4) CLP per capita in YRD was 0.045 ha/person and also unevenly distributed. Some 25.57% of the study units at county level nearly had no construction land and 8.24% of the units had CLP per capita below the national average level. CLP per capita in less than 25% of the county-level units was larger than the YRD average level, which were mainly located in Zhejiang. Therefore, research on the construction potential area in YRD was favorable for analysis of the development status and potential space of this region under the background of rapid urbanization and industrialization.

Keywords: Yangtze River Delta; construction land use; potential zoning; spatial expansion

1 Introduction

In view of the land use classification, the construction land use includes six subclasses which are land for urban construction, independent industrial and mining land, transportation land, rural residential area, land for water facilities, and specially designated land. Industrialization in China, which is unprecedented in history, will bring more than 720 million peasants to cities. Urbanization in China, which is considered as the greatest revolution in the 21st century, has significant value to sustainable development of the whole world.

However, rapid industrialization leads to tremendously growing demand and consumption of energy, it continuously occupies ecosystem such as the paddy field and rangeland, and also poses a threat to both food and ecological security in China. In China, there are abundant documentary sources recording land use change, the majority of existing studies focus on the following issues: the identification of the factors driving changes in construction land use (MacLeod et al., 2006; Rasul et al., 2004; Tzanopoulos et al., 2011), the temporo-spatial differentiation and patterns of urban land expansion based on GIS analysis system (Li et al., 2004; Wang et al., 2010; Su et al., 2011; Liu et al., 2007), urban construction land intensive use, land consolidation potential of rural residential area (Liang et al., 2002; Zong et al., 2007; Wu et al., 2007; Lin et al., 2007), and the productivity and efficiency of construction land use (Yeh et al., 1998; Lee et al., 2008). However, there are few studies on the issue of construction land potential and its spatial pattern at a relatively large scale from the perspective of regional sustainable development in China (Fan, 2007; Wang et al., 2012; Zhang et al., 2013). The majority of these studies are concentrated on the land use changes, although they have assessed the impact of these changes on the environment. Furthermore, most studies concentrate on land use change or on a specific land use type such as arable land in particular. With the initiation of the division of main-functional zones, the study on quantitative structure and spatial distribution characteristics of regional construction land has become a basic scholarly and policy issue. Xu et al. (2011) analyzed the potential of construction land in China at the macro level considering factors of geological condition, terrain condition, water area, natural reserve area, and farmland utilization status. This research has an important influence on academic study in this field. The Yangtze River Delta (YRD) is the fastest urbanization and industrialization region.

Since the 1980s, along with the realization of the economic goals and improvement of comprehensive strength, the construction lands expanded rapidly followed by a dr

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