Spatial Variability of Soil Salinity, Total Dissolved Solid and Groundwater Depth Based on Cokriging in the Low Plain around the Bohai Sea
详细信息
- 责任者：Zhou Zaiming (Institute of Hydrogeology and Environmental Geology ; Chinese Academy of Geological Sciences ; Shijiazhuang 050803 ; China) ; Zhang Guanghui
- 刊名：Acta Geoscientica Sinica
- 出版年：2011
- 卷期：32(4)
- 关键词：地下水 ; groundwater ; 水位 ; water level ; 盐度 ; salinity ; 渤海湾 ; Bohai Bay
- 页码：p.493-499
- 图表：3 illus., 3 tables, 21 refs.
- 分类号：1701
- issnNo：ISSN1006-3021
- isbnNo：CN11-3474/P
摘要
Taking into account the problem of soil salinity,total dissolved solid (TDS) of groundwater and groundwater level (GWL) existient in the low plain around the Bohai Sea, the authors collected soil samples at the depths of 0~20 cm from 127 sites in the plain,determined the soil salinity,and measured shallow groundwater depth in 130 sites and TDS of water samples in 128 sites. Classical statistical and geostatistical methods combined with GIS technique were used to analyze spatial variability of soil salinity, TDS and GWL. The results show that spatial variability of soil salinity and TDS belongs to the moderate degree while GWL belongs to the strong degree with Cv being 0.91, Cv being 0.87, and Cv being 1.06. The semivariogram and cross-semivariogram of soil salinity, TDS and GWL were fitted by the spherical and the exponential model respectively.