Advanced Materials Research Vols. 955-959

Abstract: There exist several problems in the field of water resource construction management, such as large capital investment, high quality requirement, and inconsistent personnel diathesis. Based on the technical standards and regulations issued by the ministry of water resource, China, a construction management information system for water resource project (CMIS-WR) is designed and developed. The system is based on the requirement analysis from user classification and business workflow process. And its construction objective, system structure, and key technologies are also discussed in full details. Later, Hubei Zhanghe Irrigation System is selected as a system user, and several business processes are conducted in the system to validate function performances, including basic information publicity, tendering and bidding information publicity, and project commencement approval.

Abstract: Taking Sunan’s water resource carrying capacity as the research object, this article extracted three principal components from thirteen indicators influencing water resources carrying capacity through principal component analysis method. Then bestowing weights to the three components using entropy value method, the composite scores of Sunan’s water resource carrying capacity from 2002 to 2012 could be calculated.The result shows that, with the advancement of Sunan modernization, Sunan’s water resource carrying capacity will face a major test, thus requiring a reasonable and efficient use of water resources and giving full play to potential of water resources.

Abstract: After simulating climate scenarios using incremental scenarios, the impact of future climate change on water requirement of winter wheat, summer corn and cotton in Yanqi basin was analyzed. The results showed that, (1) There was linearly proportional relationship between the crop water demand and increased temperature; when the future temperature rose 1-4 °C, the relative and absolute increase of water requirement of summer corn and winter wheat were more than that of cotton; the absolute and relative growth of water requirement of cotton was smaller. (2) In the different region, the relative increase of water requirement in Yanqi County was more than that of any other county; the relative growth of Hejing County is smaller 0.5%-47.21% than that of Yanqi County. The absolute increase of water requirement in Hejing County was the largest; the absolute increase in Heshuo County was the minimum, smaller 0.413-2.955mm than that of Hejing county. (3) Climate warming impacted on irrigation water demand of summer corn and cotton seriously, with the minimum impact on that of winter wheat. When the temperature rose 1-4°C, total irrigation water requirement in Yanqi basin increased by 6.02, 13.99, 20.87 and 28.17 ×10⁸ m³. It can be seen that, it is appropriate to reduce summer corn planting area in the Yanqi basin, especially in Hejing county in the dry years.

Abstract: In order to research the groundwater quality of the Taikang Formation in Tertiary in west of Daqing Oilfield, resistivity logging data of 140 wells in the study area were used to analyze the relations between the groundwater quality and sedimentary sand body and buried depth. The south area of Hongweixing well area and the east of Xishuiyuan well area, including Ranghulu, Qianjincun, Dulitun and Nanshuiyuan well area are favorable for high quality groundwater. The shallower buried water quality is better than the deeper buried water quality of the Taikang Formation in Tertiary. The research provides the evidences to evaluate the groundwater quality in west Daqing Oilfield and determine specific well location, improving the efficiency of exploring the underground drinking water.

Abstract: Based on the East Asian summer monsoon index and drought/flood grades during 1470–2008, the coupling relationship between them was analyzed. The results show that the East Asian summer monsoon strength index existed over seven periods. There are 1470-1573, 1574-1771, 1574-1827, 1828-1867, 1867-1828, 1895-1921 and 1922-2008. And the East Asian summer monsoon is stronger in period of 1470-1573, 1772-1827, 1827-1894 and 1922-2008. When the East Asian summer monsoon is weaker, North China and South China are prone to partial drought and yangtze-huaihe River Basin is prone to partial flood. When the East Asian summer monsoon is stronger, North China and South China are prone to partial flood and yangtze-huaihe River Basin is prone to partial drought.

Abstract: The relationship between the water budget of wetlands and the water cycle process in local river basin is bidirectional. The recovery and function performance of the wetland are based on this relationship. Hydrological models are the effective tool to detecting this link. The distributed hydrologic model was the key supports in this study and was used to quantitative identify the change of water budget of the wetlands which was impacted by the water cycle evolution in Nenjiang River basin in Northeast China. The results indicated that precipitation, runoff and evapotranspiration both in the basin and wetlands present similar declining trend. The precipitation is the major recharge source, and the evapotranspiration is the primary output of wetlands. The value of mean change in storage of the wetlands is negative which is caused by the decrease of the area of wetlands. The results of land use pattern evolution change surface inflow in the wetlands in the basin scenarios simulation indicated. These results suggested that water budget of wetlands is influenced by water cycle in basin. And some reasonable measures for wetlands management should not only base on its features, but also pay attention to hydrological regime in basin.

Abstract: Removed due to intellectual property disputes.

Abstract: The mathematic theories of traditional flood classification methods are complicated and difficult to calculate. And it is difficult to determine the weights of evaluation index objectively. In this paper the idea of fractal dimension which reflects the target complexity as an index weight is put forward. At the same time paying attention to the fuzzy character of evaluation standard boundary value, the new flood classification method which based on fractal fuzzy set pair analysis is suggested. The suggested method is used in flood classification of the Tuwei River basin (a sub-basin of the Yellow River). The results show that the suggested method is objective, simple and effect, the result of classification is feasible.

Abstract: In order to promoting the reasonable utilization of groundwater in Daxing district, the groundwater level dynamic process was simulated by generalizing hydrogeological conditions and constructing groundwater numerical simulation model. The results shows that the main affecting factors of groundwater level in the Daxing area are exploitation and precipitation recharge. Some groundwater exploiting measures are recommended according to the simulation result.

Abstract: In order to figure out seepage field in aquifer under the coal seam, the geology and hydrogeology conditions systematically of study area were analyzed, hydrogeological conceptual model was generalized, mathematical model was built, seepage field of the Taiyuan limestone aquifer was simulated with software Feflow. Simulation results show that hydrogeological parameters of Taiyuan limestone aquifer change greatly in different partitions. The model also indicates the heterogeneity of karst fissure of Taiyuan limestone aquifer. The drainage quantity is from the Ordovician limestone aquifer besides supplying from runoff of upstream and capture excretion of downstream. The research is an attempt to simulate the seepage field in aquifer under coal seam, to some extent, it also provides a technical basis for safe coal mining and as a reference for simulation constructions of three-dimensional groundwater flow models in similar coal mines.