| Water resource shortage is the most serious source problem facing society in the 21st century. With the increase of the population and the accelerating of industrialization course, the quantity of water resource demand is increasing rapidly. Because the water resource was regarded inadequate and was shorted of uniformed management in the past, many environmental problems have brought one after another with water resource exploration and utilization related, so a large amount of fund had to invest to cure and improve the environmental problems. From this point, we must walk along combined with "population, resource and environment". Problems are urgently resolved to protect natural environment, scientific and rational use water resources. Establishing water resource management geographic information system is the key approach of sustainable development and water resources exploitation. The average water resources quantity is 424m3 a person in Xuzhou City, it is only 18% in our country, and Xuzhou City was regarded as one of the most serious scarce water in China in 1980. The average surface water resource quantity is 24.1×108m3 for many years, though the average water resource pass through this area achieves 73×108m3 for many years, it main concentrate in July to September, the available water resource quantity is small. At the same time, the industry waste water and the living sewage were drained largely, the surface water has suffered various degree polluted, and it has not been drinking directly. The groundwater supply quantity of the main exploited aquifers is only 6.25×108m3, and the allowable exploration quantity is 4.61×108m3, the amount of actual available water resources is 28.71×108m3. The demand quantity is 49×108m3 in normal year, the scare quantity of water resource is 16.7×108m3 in normal year, 29.9×108m3 in drought year, and 43.6×108m3 in serous drought year. We had to increase exploration quantity of groundwater as water supply sources of living and industry. Owing to groundwater was explored excessively, it induced the area groundwater level fall continuously, the cone of depression enlarge constantly, the water quantity of single well decrease and water quality is gradually worsen, and the subsidence of karst area has often occurred, and so on. This paper is aimed at the multitudinous problems in the groundwater resource exploration, groundwater resources management information system (GWRMIS) was founded, its aim is rational programming and utilizing water resource, and making limited water resource bring into play maximal benefit. The groundwater resource management information system (GWRMIS) in Xuzhou composes of four sub-systems: (1) Precipitation analysis sub-system (PAS). Precipitation is the ultimate origin of water resource. According to the statistics of precipitation material in the past 50 years, the spatial database of precipitation was founded, it included the location of precipitation observation stations, mensal precipitation, and so on. According to analysis, we found that the precipitation is gradually decreasing from southeast to northwest in Xuzhou. The method of change point analysis of time serial was used, and the precipitation phase was divided into four periods, that is A (1950~1965), B (1966~1989), C (1990~1998) and D (after 1999). The precipitation is gradually increasing in phase A, decreasing in phase B, increasing again in phase C, and it has entered phase D. the precipitation of each phase is 894.3mm, 785.6mm, 928.2mm and 641.9mm respectively. Modeling and forecasting using mean generation function relying on precipitation before 1999, the simulation ratio of history is 93%, and the average relative error is 9%. By the test forecast, the results compared with the self-regressive model and real value, the effect of simulation and forecast using mean generation function is preferred to self-regressive model. And the precipitation and drought and flood are predicted using mean generation function in 10 years; (2) Surface water sub-system (SWS). Surface water is significant component of water resources. Rivers and lakes are the main existing forms. The database of surface water includes the distribution of water system, the area and capability of reservoirs and lakes, the length of rivers, the water level and runoff of main observed stations. There are 212.94×103 hectares of water area in Xuzhou City, the average runoff of surface water is 24.05×108m3 for many years, there are 73.2×108m3 /a pass through this area, and the available surface water quantity is about 32.68×108m3/a. The water system in Xuzhou is a part of Huaihe valley, the fractal theory was used to appraise Yi River, Shu River and Si River water system in this area, according to Horton's law, the relationship was established between main stream and branches, the length of rivers and its areas, the fractal dimension is 1.367 to 1.583 of Yi River, Shu River and Si River water system. At the same time, the informational entropy was inducted, the growth period of rivers and its formation of physiognomy were discussed in this paper. (3) Groundwater sub-system (GWS). There are 12884 pumping wells, and the exploration quantity is 4.9645×108m3. There are 259 long-term observed wells, we select 66 wells to build spatial database. The groundwater flow is belongs to Darcy's flow of the quasi-three dimension, and the medium is hetero-anisotropy. Water resource was numerical simulated and evaluated using finite element method. The whole area was divided into 32 sub-regions. The groundwater dynamiccan be predicted combining with mean generation function in 10 years. On the basis of hydrological parameters zoning and the calculated results, the fault zone of old Yellow River has the preferential function of controlling groundwater. Dissipative structure and "entropy"of thermodynamics were induced in study of groundwater. The zonal relationship of all kinds of water resource factors was established. It can forecast groundwater level dynamic using precipitation and exploration of groundwater. The short cycle and outstanding cycle of groundwater level dynamic are identified using largest entropy spectrum. In addition, according to the characteristic of groundwater dynamic abnormity, it provides basis to forecast earthquake. (4) Geological hazards sub-system (DHS). The geological hazards related to exploration and utilization of groundwater includes the area groundwater level fall continuously, the cone of depression enlarges constantly, land subsidence and water environment problems, etc. The long-term drought is the main reason of groundwater exploration quantity increasing. According to the results of geological hazards investigation, the geological hazards database and the distribution of hazards were established. The hazards distribution is superposed on the contour of groundwater level. The possible place and harmful degree of environmental geological hazards can be predicted. On the basis of this, the steps of geological hazards were put forward. With regard to the water environment, the inspect nets were established at main reaches, relying on the results of water quantity analysis, the polluted degree of water body was confirmed. The protection region of water resources was plotted out relying on the function of water body, and the water resource is really protected. Study of GWRMIS in Xuzhou, database system is established related to exploration and utilization of groundwater, database is updated in time according to materials getting from inspect, all kinds of information related on water resource can be queried at any moment. The decision was made on management of water resource through analysis and judge system, and the purposes of water resources optimize management can be achieved.
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