Xiaoqing River plays an import role in water supply, flood control and ecological protection in Shandong Province. The deterioration of water quality seriously threatens the safety of drinking water for local residents and water ecological environment. In order to investigate the present situation of Xiaoqing River, the cluster analysis was used to study the temporal variation of water quality, and the composite pollution index was used to assess the river water, lake and reservoir water quality. The temporal variation of CODCr, CODMn, total nitrogen, total phosphorus and ammonia in the river water was discussed from the year of 2009 to 2016. The results found that the water quality of Xaiqoing River has improved with time on the whole. The results found that total nitrogen was the major pollutant during all the sampling points. And the Mashang sampling station has the worst water quality. The result can help provide the references for the prevention and control of river water pollution and water ecological imbalance in the Xiaoqing River basin.

The problem of water resource shortage has made many countries in the world face severe challenges. The reasonable water resource development and utilization model has increasingly become the research focus of each country. In this study, the Yihe river basin is taken as the research area. Based on the current water utilization status from 2001 to 2016, the fuzzy comprehensive evaluation model is used. Selecting five evaluation factors, including urbanization rate, ecological environment water consumption rate, per capita water consumption, surface water supply ratio and groundwater supply ratio, to study the regional water resource development and utilization model. The results show that both Linyi city and Zibo city in the Yihe river basin are more suitable for the joint development model of surface water and groundwater.

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