机译:Factors contributing to soil acidification in the past two decades in China
International Institute for Earth System Science, Nanjing University, Nanjing 210023, China;
International Institute for Earth System Science, Nanjing University, Nanjing 210023, China, Jiangsu Center for Collaborative Innovation in Geographical Information Resource Development and Application, Nanjing 210023, China;
School of Geography and Ocean Science, Nanjing University, Nanjing 210023, China;