Preliminary establishment and application of spatial database of cretaceous groundwater hydrochemistry in Ordos basin

Choosing MAPGIS65 developed by Zhongdi Company of China University of Geosciences (Wuhan) as the basic GIS platform and deep study of chemical data of cretaceous groundwater in Ordos basin as the basis, a spatial database of ground hydrochemistry in this district was designed and achieved in this paper. And through secondary development of MAPGIS65 by using component development technology, functions of contour generation and spatial analysis were realized.. By using data in spatial database, maps that can support to study characteristics and distribution of ground hydrochemistry in this district like contour map of mineralization degree (TDS), negative ion and positive ion concentrations, distribution map of types of hydrochemistry, etc. were produced.