延安市宝塔区土壤养分地球化学评价中的变权效果
王鹏(
), 刘拓()
), 刘拓()
Variational weight effect in the geochemical evaluation of soil nutrients in Baota District of Yan'an City
Peng WANG(), Tuo LIU()
), Tuo LIU()
图1. 研究区域位置
Fig.1. Location of the study area
