It is very important in pollution treatment to clarify the space-time distribution of water quality in DianchiLake. Based on the sample data obtained from 10 observation stations every month from 2008 to 2009, it uses space-time semi-variogram and ordinary kriging method to simulate the space-time variance and distribution of water quality indictors (TN, TP, BOD, CODMn, DO, Chlorophyl-α, etc.). Because the space-time semivariogram also has a certain of ex-trapolation function. From the simulation results, the pollution is mainly concentrated at the North (Caohai) and the Southwest area (Haikou), and water pollution has a increase trend.
References
[1]
H. Q. Sun, “Geostatistics and the Corresponding and Its Application,” University of Mining and Technology Press, Xuzhou, 1990.
[2]
T. Fang, H. Y. Ao, J. T. Liu, et al., “The Spatio-Temporal of Water Environmental Status in Dianchi Lake,” Acta Hydrobiologica Sinica, Vol. 28, No. 2, 2004, pp. 124-130.
