Trend And Driven Factors Of Salinization In Bosten Lake

Based on the statistics and monitoring data of Baxin Guoyu Statistical Yearbook,Water Quality and Bazhou Meteorological Bureau in the Great Lakes Region of Bosten Lake,this paper summarizes the changes of water mineralization and its influencing factors in Bosten Lake in recent decades.At the same time,the correlation analysis and multiple regression analysis are carried out around the indexes of water quality of Bosten Lake and human and natural factors that affect the change of salinity.The conclusions are as follows:(1)Since 1958,the salinity of Bosten Lake has shown an overall wavy upward trend;the water level has shown a whole wavy downward trend;since 1980,and the temperature at different elevation stations has an overall upward trend;Over the past 60 years,the precipitation has also increased,and the Dashankou lake runoff has shown an overall wavy upward trend;Since 1994,the GDP?the population?the cultivated land area and the planting area of crops are increasing year by year.(2)There is a significant correlation between salinity and water level,sulfate and chloride in the water quality index(P<0.01).There is a significant negative correlation between water level,precipitation,temperature and lake runoff in natural factors.(P<0.01);there was a significant positive correlation(P<0.05)with the area of cultivated land and the area planted with crops.(3)Based on the premise of artificially changing the drainage pattern of Bohu after 1982 and regulating the water level of the lake,the mineralization degree of Bohu from 1980 to 2017 was mainly affected by natural factors(water level and lake runoff),and the mineralization degree of Bohu and its main The specific formula for the quantitative relationship between the impact factors is as follows:salinity=109639-102*water level-15*lake runoff,but it cannot be said that human factors have no effect on the salinity of Bosten Lake water body.In general,the salinity of the Stern Lake water is affected by natural factors(such as temperature,precipitation,lake runoff,etc.)and human activities(such as agricultural activities).