Organic matter amendment regulates surface electrochemical properties of yellow soils: The major role of Alkyl C and O-Alkyl C - Xiaoshuai Song; Cheng Liang; Chenyang Liu; Lin Ning; Xiheng Lv; Wei Liu; Rena Yasin; Yunhang Luo; Jiangwen Li; Chenyang Xu; Wei Du; Wuquan Ding; et al. (Soil and Tillage Research, 2026)