Exploring the Variations of Redbed Badlands and Their Driving Forces in the Nanxiong Basin, Southern China: A Geographically Weighted Regression with Gridded Data

At present, most of the international research cases on badlands are based semiarid regions, while there few studies in humid regions. Therefore, regions has strong theoretical and practical significance. By taking Nanxiong Basin, which is located southern China as object, this paper analyzes scale spatial distribution variation characteristics redbed builds a set factors that influence to explore driving forces influencing remote sensing images American KH-4A satellite from 1969 Landsat 8 image 2017. The result shows Basin had generally decreased area 1693.97 hm2 127.4 2017, with decrease 92.48%. gradually changed contiguous planar form dispersed island forming four agglomerations. degree for order lithology > road aspect residential locations slope water system vegetation garden plots. Among these forces, except plots, have negative correlation badlands, other positive correlation. Lithology positively correlated strongest all factors. factor second lithological factor; more accessible an is, stronger human will be serious damage be, easily cause surface damage, induce land degradation, badlands.