title: [Analysis of Cd pollution & spatial variability characteristics of typical agricultural soils in suburbs of Urumqi City, Xinjiang].
abstract: Cd content in agricultural soils from 4 townships in north suburb and 2 townships in south suburb of Urumqi City was determined with graphite furnace (GF-990) atomic absorption spectrometry, and the spatial variability of Cd content there was analyzed with geo-statistics method. The result indicates that Cd content from the sampling points in north suburb exceeds the stipulated standard and falls into medium or strong spatial variability with nugget value > 75%, which explains a weak self-correlation among those variable spaces under mainly the impact of random factors of external pollution such as local fertilization level, irrigation and cultivation etc. Cd content from the sampling points in north suburb does not exceed the stipulated standard but approaches to the critical warning value with nugget value at 50.2%, which falls into medium self-correlation among those variable spaces. Spatial variability characteristics of Cd distribution in suburban agricultural soils of Urumqi City, Xinjiang were studied in this paper for providing scientific basic data to source analysis and control of Cd pollution in the far mLands there.
authors.affiliation: College of Grassland and Environmental Science, Xinjiang Agricultural University, Urumqi 830052, China. zcx2310@126.com
authors.forename: Chun-xia
authors.initials: CX
authors.lastname: Zheng
authors.forename: Hong-qi
authors.initials: HQ
authors.lastname: Wu
authors.forename: Xin-ping
authors.initials: XP
authors.lastname: Zhu
authors.forename: Hong-tao
authors.initials: HT
authors.lastname: Jia
mesh_terms: D000383:Agriculture; D002104:Cadmium; D002947:Cities; D004784:Environmental Monitoring; D004787:Environmental Pollution; D012987:Soil; D012989:Soil Pollutants; D013054:Spectrophotometry, Atomic
chemical_list: D012987:Soil; D012989:Soil Pollutants; D002104:Cadmium