TROPICAL GEOGRAPHY ›› 2015, Vol. 35 ›› Issue (3): 393-402.

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Development of Environmental Security Management Information System for Reservoir-Type Water Source in Highly Urbanized Areas: A Case Study of A Reservoir in Shenzhen

PENG Shenghua,YIN Kuihao,WANG Yuexing,YANG Sheng   

  1. (Shenzhen Research Academy of Environmental Sciences//State Environmental Protection Key Laboratory of Drinking Water Source Management and Technology//Shenzhen Key Laboratory of Drinking Water Source Safety Control,Shenzhen 518001,China)
  • Online:2015-06-05 Published:2015-06-05

Abstract:

The environment security situations of water sources in China’s highly urbanized areas are worrying; meanwhile, there exists an obvious application deficiency of advanced methods and tools to support the environment security management. To solve this problem, the functional requirements and the development schemes are discussed first and a GIS-based information system with several practical functions is developed then, taking a reservoir in Shenzhen for example. An actual application of the system to the example reservoir achieves following results: the environmental risk evaluation module indicates that Shawan Sewage Interception Sluice, municipal roads near the reservoir, and bridges across the reservoir surface are the major risk sources of accidental water pollution; the sensitive zoning module reveals the most sensitive zones of the water source are mainly located near around the head and the west side of the reservoir, however, there are still some such as Shatangbu community located relatively far away, which displays that this module can offset the defect of the technical guideline currently in effect for delineating source water protection areas concerning environmental risk prevention; the environmental prediction module shows that pollutants will cost at least 20 hours to disperse and be transferred to the intake near the dam, supposing an accidental pollution event takes place respectively at each site of the major risk sources; also using the environmental prediction module, both the flood flow at Shawan Sluice and the discharge from the sluice into the reservoir because of flood releasing can be forecasted in advance by using hourly measured rainfall, besides, the pollutants’ situation of transferring and diffusion in the reservoir can be simulated after the flood releasing; a real-time video surveillance and on-line monitoring of the reservoir water environment can be realized with the environmental monitoring module by installing associated equipments at suitable sites of both the sensitive zones and in the waters. The achievements demonstrate that the developed information system is both powerful and practical, and can be used to effectively support the environment security management of reservoir-type water sources in China’s highly urbanized areas.

Key words: urbanized area, water source, environmental security, geographical information system, reservoir, Shenzhen