Impacts of disposal projects on the groundwater level and degree of mineralization in the lower reaches of Shiyang River
The data of groundwater level and degree of mineralization in 52 wells from 2001 to 2014 were used to analyze their temporal and spatial changes in Minqin,and correlation analysis was made of the groundwater level,degree of mineralization and disposal projects.The results showed that in space,the maximum and minimum groundwater level was in Qushan and Nanhu regions and the degree of mineralization was like:Hu (lake) region>Quanshan region>Ba region>Nanhu region.In time series,the groundwater level increased (2001-2009) firstly and then maintained at a smooth state,at the same time having a tendency to reduce (2001-2009).The monthly variations of groundwater level was in "V",the degree of mineralization was increasing (2001-2012) and then reducing (2012-2014),it was bigger in autumn than spring in the Hu and Nanhu regions,while it was bigger in spring than autumn in Quanshan and Ba regions.The correlation analysis showed that the groundwater level,degree of mineralization of groundwater and disposal projects had a remarkable correlation between them.
groundwater leveldegree of mineralization of groundwaterdisposal projectShiyang River downstream