关键词: 城市化, 城市边缘带, 土地利用, 土壤资源

Abstract: As an interface between the dynamic, interactive and transformative ruralurban spectrum, the periurban zone can be divided into several types based on its forming mechanisms. The high complexity of spatial and landuse/cover structure and the temporal variability of landuse forms, however, are displayed in all of the kinds of periurban types. During the rapid urbanization process, increasing pressure is posing on periurban soil resources. First of all, fast transformation of farming lands into nonagricultural uses leads to sharp decrease in agricultural soil area, threatening directly the local agricultural production and food security. Besides, disposal and accumulation of hazard wastes originating from urban, industrial and agricultural sources in periurban areas result in soil degradation and serious pollution, leading to negative influences not only on quality of agricultural products, but local ecosystems. The studies focusing on landuse/cover changes and soil resource dynamics in the periurban areas are now imminently in demand.

Key words: urbanization, periurban, LUCC, soil resource