Tree-ring δ18O reveals a consistent decrease in April precipitation in southeastern China since the 1950s and its linkage to global climate phenomena - Fang Wang; Guoliang Lei; Chotika Muangsong; Binggui Cai; Miaofa Li; Keyan Fang; Nathsuda Pumijumnong; Rattanakorn Chatwatthana; Shankar Panthi (Global and Planetary Change, 2026)