Urban land expansion and arable land loss of the major cities in China in the 1990s
Urban land expansion and arable land loss of the major cities in China in the 1990s作者机构：Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China Institute of Geographic Sciences and Natural Resources Research Chinese Academy of Sciences Beijing 100101 China
出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)
年 卷 期：2005年第48卷第9期
页 面：1492-1500页
核心收录：
基 金：supported by the CAS Knowledge Innovation Program(Grant No.KCZX1-Y-02) the EU Project of Policy Decision Support for Sustainable Adaptation of China’s Agriculture to Globalization(CHINAGRO)(Grant No.ICA4-CT-2001-10085)
主 题：China, urban construction land expansion, arable land loss, regional difference, neighboring index [I(i)].
摘 要：Based on the land-use data in 1990 and 2000, determined by interpreting Landsat Thematic Mapper (TM) imagery, this paper defines the extent of urban construction land, and extracts patches of urban construction land of 145 cities with the largest areas in 1990 and arable land patches around these cities. With these data, this paper analyzes the characteristics of ur- ban construction land expansion and the consequent arable land loss in East, Middle and West China, and further identifies the social, economic and spatial factors of the urban land use changes, using GIS (Geographical Information System) and multivariate regression approaches. The results show that total urban land of the 145 cities expanded by 39.8%, with about 70% of the new urban land converted from arable land in the 1990s. The urban land expansion varied among the three regions, with a value of 43.0% in the East, 33.1% in the West (33.1%) and 17.8% in the Middle. Moreover, mean urban construction land per capita increased by10.7% in the East, but it decreased by 7.7% in the Middle, 1.4% in the West. Statistical analysis indicated that total wages of staff and workers could best explain the differences of urban land expansion.
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