Migration and leaching characteristics of base cation: indicating environmental effects on soil alkalinity in a karst area - Mingzhen Ma; Yang Gao; Xianwei Song; Sophie M. Green; Bailian Xiong; Jennifer A. J. Dungait; Tao Peng; Timothy A. Quine; Xuefa Wen; Nianpeng He (Environmental Science and Pollution Research, 2018)