This paper analyzed the input and transfer processes of Cu in waters of Jiaozhou Bay, Shandong Province, eastern China. Results showed that the input of Cu was stream flow discharge and atmospheric deposition; while the major transfer processes of Cu was vertical sedimentation and horizontal diffusion. For seasonal variations, the Cu contents in Jiaozhou Bay were higher in wet season than in dry season. For spatial variation, the Cu contents were higher in surface water than in bottom waters, and were decreasing from the pollution sources to the around areas.
Planning of commercial outlets bears great significance to all-round development of small-and mediumscaled cities and has been put to priority of promoting regional economic sustainable development. In combination of actual situation of Yihuang County, this Article has herein explored the major problems existed in the current layout of commercial outlets of small-and medium-scaled cities in our country, and put forwards that the key of efficient planning is to arrange the layout appropriately, improve modern logistics system, enhance the magnitude of business and capital invitation to develop local specialized economy.
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