Soil Salinization Based on Principal Component Analysis———A Case Study of Jingdian-Pumping Irrigation District in Gansu Province

XU Cun-dong，ZHANG Ｒui，WANG Ｒong-rong，GAO Yi-wei ，CHENG Yu，TIAN Jun-jiao，LIU Hui

China Rural Water and Hydropower . 2019, (5): 9 -14 .