关键词: 土地整理, 土地整理, 中部粮食主产区, 增量经济型, 关键技术, 评价, 研究框架

Abstract:

In order to provide discrimination standard for the Yili river basin soil caused by natural or man-made environmental disturbance, through systematic sampling and analysis of soil of this area, using standard method (Fe as standard element), the author estimated geochemical baseline values for heavy metal elements of Cu, Zn, Pb from 4 different types of soil include sierozem, kastanozem, chernozem and saline-alkali soil in Yili river area, respectively. The results indicated that geochemical baseline values of the same heavy metal element was very different, this might be caused by soil parent materials, soil forming process, human activities, and so on. The geochemical baselines of heavy metal elements Cu, Zn, Pb were 51.2 mg/kg, 77.3 mg/kg, 25.7 mg/kg in sierozem soil, 58.6 mg/kg, 73.8 mg/kg, 23.3 mg/kg in kastanozem soil, 53.1 mg/kg, 62.7 mg/kg, 41.7 mg/kg in chernozem and 42.6 mg/kg, 55.1 mg/kg, 40.8 mg/kg in saline-alkali soil. Stardard method could preferably estimate the geochemical baseline values for heavy metal elements of Cu, Zn, Pb in soils of Yili river area, that could provide a basal understanding for the environmental pollution and degradation of the surface, forecasting and monitoring of global change effects and environmental changes.