Research on Spatial-temporal Changes and its Driving Force of Land use in the Yellow River Delta

摘要

As the most potential big river delta, the Yellow River Delta has distinct land resource advantages, good location and abundant natural resources. In this paper, we regarded Dongying City as the study area and analyzed the spatiotemporal characteristics of land use from 1992 to 2010 in this area. As well as we explored the socioeconomic factors and driving force of human activities which cause the land use change. The research result shows: (1) The overall trend is that building land, water body, salt pan and forest area is increasing, while the arable land, intertidal zone, grassland and unused land is decreasing. Of which, building land increased by 5.92%; (2) The study area mainly switch among cultivated land, building land and salt pan. There were 355.79km~2 arable land become building land, 225.75km~2 intertidal zone became salt pan. The conversion between cultivated land, salt pan, building land and water body occurred frequently; (3) The number of eight kinds of land plaque was reduced to 32,892 from 51,650. And seven landscape indicators in arable land were reduced; (4) The analysis of driving factor in land-use change of the research area showed that: human activities is changing the overall pattern of land utilization in the area; policy guidance is the macro factor to impact land-use change in the area; while the rising population and rapid urbanization are the direct driving force to a significant reduction of arable land.