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- W2374661738 abstract "The effects of land use and land cover change(LUCC)on groundwater quality in Qiqihar city was analyzed by contrast land use change with groundwater quality change.The research method of LUCC is that based on three temporal remote sensing images of 1995,2003,2011.The dynamic trend and degree of land use in the district was also analyzed.At the same time,a regression equation was used to analyze time trend of groundwater quality by EXCEL soft.Results show that the main landuse types were dry land,wetland and construction land in the study area.And the area of dry land was the largest,accounting for higher than 45% of the whole study area.During the recent two decades,the areas of wetland have decreased continuously(112.38km2)and transformed into dry land,paddy land and construction land.The overall degree of land use changes has been retarded since 2003.There was a dynamic relationship between the groundwater quality and the change of land use.Trend of NO-3-N concentration in groundwater was closely related to the transformation between construction land and dry land.Nitrogen pollution of groundwater in the study area was mainly affected by urban and rural residents living and industrial production,instead of chemical fertilizers in agricultural production.Area where SO2-4,Cl-and total hardness concentrations rose with the fastest speed had been used as construction land,on the contrary,area where SO2-4,Cl-and total hardness concentrations decreased with the fastest speed areconstruction land convertedinto other types of land.The rapid development of urbanization and industrial long-term land resources,has become the main land use which has a direct impact on groundwater quality in the area.Therefore,based on the administrative region served as research unit,the research of land use change and its effects tohydrogeologic environment are very important for the protection of the resources and environment of Qiqihar City." @default.
- W2374661738 created "2016-06-24" @default.
- W2374661738 creator A5028396253 @default.
- W2374661738 date "2015-01-01" @default.
- W2374661738 modified "2023-09-27" @default.
- W2374661738 title "Effects of Land Use Change on Groundwater Quality in Qiqihar City" @default.
- W2374661738 hasPublicationYear "2015" @default.
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