Groundwater Hydrogeochemical Characteristics And Nutrients Discharge Into Jiaozhou Bay From Ambient Areas

Because of quick development and the increasing population in Qingdao City in recent years, the eutrophication problem of Jiaozhou Bay becomes more and more serious, red water bloom occurs, it influences the sustaniable development of ocean industry of Jiaozhou Bay. Although the land-source nutrients discharge from land into Jiaozhou Bay has been researched, but the contribution of groundwater is usually neglected. Research has showed that the function of groundwater in transporting nutrient is sometimes very important, groundwater can take N and P to the sea , then it may change the N/P and the situation of as N or P for limited condition, and cause eutrophication and phytoplankton blooms, even change the populative structure, and then it can influence balance of the ecosystem. Some foreign researchers has related the groundwater nutrients discharge with the eutrophication problem, but the related research in China is few.This thesis firstly generalizes the geographic, geological and hydrogeological conditon of the area around Jiaozhou Bay by collecting comprehensive datum. Then the observation bores were set to observe the groundwater level dynamic and also collect groundwater sample for analysing the content of general ion and nutrients. And then by generalizing groundwater level dynamic, hydrology geochemistry characteristic and its nutrients distribution regulation in groundwater around Jiaozhou Bay, the groundwater and its N, P and Si inorganic nutrients discharge into Jiaozhou Bay are estimated using two kinds of section methods.The results indicate that the quantity of groundwater discharging into the bay from the researched area is huge, and it is significantly influenced by factors of hydrology geology condition, precipitation, exploitation and the gulf environment. The groundwater discharge into the bay from the year 2001 to 2003 are 2.16, 1.87,...