Detection of changes in land use and evaluation of ecological quality in the Xiong’an New Area from 2013 to 2021 from Landsat images

Nine Landsat8 images from 2013 to 2021 were used to obtain year-by-year land use and land cover classification results in Xiong’an New Area, with object-oriented supervision classification method and LUCC analysis to carry out ecological quality evaluation． Overall accuracy of the classification results was greater than 86.8%, the Kappa coefficients ranged from 0.81 to 0.88, superior to FROM-GLC and GLC_FCS global land cover product． Since the establishment of Xiong’an New Area, total area of cropland has decreased, impervious area and forest increased, but proportion of blue-green space has increased from 12% to 30%． Different LUCC patterns were observed in three counties in Xiong’an New Area, meeting the planning requirements very well． Construction of the three counties in Xiong’an New Area has been in strict incompliance with the construction tasks of afforestation, urban development, wetland conservation in the Outline Plan of the New Area． Main land use coverage changes in each county are: a shift from cropland to forested land, mutual shift between cropland and impervious surface, and shift from cropland to water bodies and aquatic vegetation． Negative impacts of impervious surface expansion and urban construction on ecological quality are gradually being offset by positive impacts of increased forest cover and blue-green space． In conclusion, LUCC in Xiong’an New Area complies with construction policy, reflects achievements of economic and social development in the area．