Estimation of Nitrate-Nitrogen Loads in an Iowa River Using Kriging and Rating Curve Methodologies

Xiuyu Liang1, Keith E Schilling2, You-Kuan Zhang3,4 and Christopher S Jones2, (1)Southern University of Science and Technology,State Key Laboratory of Soil Pollution Control and Safety, Shenzhen, China, (2)University of Iowa, Iowa City, IA, United States, (3)Nanjing University, Nanjing, China, (4)Southern University of Science and Technology, School of Environmental Science and Engineering, Shenzhen, China