Spatio-temporal analysis of land-use conversion in the eastern coastal China during 1996-2005

Based on the acquaintance of the regional background of urban-rural transformational development and investigations on the spot, this paper discusses the holistic situation, dominant factors and mechanism of arable land loss and land for construction occupation in the coastal area of China over the last decade, with the aid of GIS technology. Conclusions of the research are summarized as follows: (1) the arable land had been continuously decreasing from 1996 to 2005, with a loss of 1,708,700 hm(2) and an average decrement of 170,900 hm(2) per year; (2) land for construction increased 1,373,700 hm(2), with an average increment of 153,200 hm(2) per year; (3) total area of encroachment on arable land for construction between 1996 and 2005 was 1,053,100 hm(2), accounting for 34.03% of the arable land loss in the same period, the percentages of which used for industrial land (INL), transportation land (TRL), rural construction land (RUL) and town construction land (TOL) are 45.03%, 15.8%, 15.47% and 11.5%, respectively; and (4) the fluctuation of the increase of construction land and encroachment on arable land in the area were deeply influenced by the nation's macroscopic land-use policies and development level of regional economy. The growth of population and advancement of technology promoted the rapid industrialization, construction of transportation infrastructures, rural urbanization and expansion of rural settlements in the eastern coastal area, and therefore were the primary driving forces of land-use conversion.