Scientific Reports, Journal Year: 2024, Volume and Issue: 14(1)

Published: May 10, 2024

Abstract Since the reform and opening up in 1978, Dasi River Basin within Jinan’s startup area from replacing old growth drivers with new ones (startup area) has experienced rapid urbanization industrialization, landscape pattern changed significantly, resulting a series of eco-environmental problems. In order to more accurately identify vulnerable areas pattern, understand their cause mechanism changing laws, provide theoretical basis for implementation sustainable planning management region. Four Landsat images 2002, 2009, 2015 2020 were taken as data sources, optimal granularity analysis was determined perspective level class by using coefficient variation method, effect curve information loss model, amplitude grid method semi-variance function. Then, vulnerability assessment model constructed based on scale, its spatiotemporal evolution characteristics spatial autocorrelation analyzed. The result showed that: (1) this study 80 m, 350 × m. (2) During 2002–2020, overall southern part an increasing trend, while that middle northern parts decreasing trend. (3) mean values index 0.1479, 0.1483, 0.1562 0.1625, respectively, showing trend year year. terms land use, during average indices forestland built increased 23.18% 21.43%, followed water body bare land, 12.18% 9.52%, changes cropland grassland relatively small, 5.36% 5.65%, respectively. (4) significant positive correlation distribution. Low-Low generally transferred southeastern midwestern northern, High–High mainly southern. Overall, degree agglomeration

Language: Английский