城乡用地遥感识别与时空变化研究进展

Progress in Remote Sensing Recognition and Spatio-temporal Changes Study of Urban and Rural Land Use

土地利用/覆被变化在全球环境变化和可持续发展研究中具有极其重要的意义。论文在国内外土地利用/覆被变化研究梳理的基础上,从城乡用地遥感识别和时空变化两个方面归纳和总结了国内外土地利用/覆被变化的研究前沿和进展。研究发现在遥感和GIS技术支撑下土地利用/覆被变化研究形成了独特的研究范式,多分析方法、多数据源和多时段融合成为当前研究的重要趋势。目前在城乡生活-生产-生态空间识别研究领域取得了较大进展,但仍然存在"重城市和大城市、轻中小城市和城镇"的问题。时空变化研究重点从城市和乡村两个地域单元展开。城市扩张和城市蔓延的原因、后果、特征、过程、格局、模式和测度方法成为城市土地利用研究重点。耕地保护和乡村居民点变化研究成为乡村土地利用研究的两大核心。在研究取向上总体呈现出重城市轻乡村的趋势。当前研究应该以问题为导向、注重应用出口的探寻,构建适合中国国情的研究框架,鼓励多学科、多领域的综合交叉借鉴,创新理论和方法,打造本土性和原创性的创新成果。

Land use and cover changes play an important role in the study of global environmental change and sustainable development. This paper summarizes the related research progresses in two fields, land use and cover information recognition based on remote sensing images and their spatial and temporal changes. The study found that land use and cover studies have already formed a particular research paradigm under the support of RS and GIS technique. There is an important research trend of combination of multi analysis methods, multi data sources and multiple periods. Current studies have made significant progress in the recognition of ecological-production-living space. However, much attention has been paid on the studies in cities especially big cities, while the studies in small and medium-sized cities and towns do not obtain enough attention. The studies in spatiotemporal changes of land use and cover focus on urban and rural units. The causes, consequences, characteristics, processes,patterns and measuring methods of urban expansion and urban sprawl are the main aspects of urban land use and cover studies. Cultivated land protection and rural residential land changes are the focuses of rural land use and cover studies. There is an undesirable tendency that urban land use and cover received more attentions than rural ones. Future studies should pay more attention to improving problem- orientated research and application of research findings, so as to build an innovative research framework suitable for China. Integrated studies of multidisciplinary and multi-field should be encouraged to create native and original achievements.