Impact of wildfire on the distribution and migration of plutonium and cesium isotopes in forest soils, Lu mountain, Sichuan - Yongjing Guan; Guodong Yu; Mengmeng Wu; Xianghao Luo; Wenjian Huang; Yukun Li; Zhiyi Tu; Chunping Huang; Jianhui Lai; Deyu Wang; Zhanhong Guo; Huijuan Wang; et al. (Journal of Environmental Radioactivity, 2026)