Tracing threats across the land–marine transition areas: Decoding heavy metal sources and risks in soil-water-sediment systems of northern and eastern coastal China - Qiumei Wu; Peng Liu; Shiyi Zhang; Guojing Yan; Kang Tian; Wenyou Hu; Tieyu Wang; Jong Seong Khim; Seongjin Hong; Bong-Oh Kwon; Ya'’nan Fan; Biao Huang (Marine Pollution Bulletin, 2026)