Spatial Variation of Soil Nutrients in Downstream Districts of Beiyunhe River Using Geostatistical Methods
LI Jian-hui, LI xiao-xiu, ZHANG Wang-shou, WANG Xiao-yan
SCIENTIA GEOGRAPHICA SINICA . 2011, (8): 1001 -1006 .  DOI: 10.13249/j.cnki.sgs.2011.08.1001