371 / 2019-02-25 13:10:33

Monitoring and analyzing impervious surfaces based on geographical conditions: a case study in Wuhan, China

Impervious surface; Geographical condition monitoring; urban developmental pattern; external increment; intension existent development

全体主题 > Spatial data collection, Analysis, and Visualization

The distribution of impervious surfaces not only reflects urbanization but also one of the ecological assessment indexes used to measure the urban environment, which is of great significance for urban development planning and ecological assessment. The census and monitoring of geographical conditions are important directions for the development and upgrading of China’s surveying and mapping industry in the new era, and provide full access to surfaces of natural geography and human resource factors. In an annual cycle of changes, updating surface coverage and abundant data provides a good foundation for the study of the distribution of impervious layers. Taking Wuhan as the study area, this study explores an efficient and accurate method to extract urban impervious surfaces based on geographical conditions; adjusts it using housing construction area and site to obtain accurate distribution; and analyzes the general state, regional characteristic, circle layout, land use transformation, and landscape pattern, which provide basic data support for sponge city construction to distinguish the difference of urban developmental pattern between external increment and intension existent development.