Geochemical Evaluation of Land Quality in Yanbian Apple-pear Main Production Areas
XU Qian et al (College of Earth Science,Jilin University,Changchun,Jilin 130061)
[Objective] The study aimed to make clear the influence of soil geochemical elements on land quality,to provide the service for land utilization.[Method] Based on field survey,120 samples were collected in Yanbian apple-pear main production areas,including Longjing,Sanhe,Huichun and Tumen.16 elements and the corresponding physicochemical properties indices were tested and analyzed.The geochemical evaluation of study areas' land quality from the aspects of land fertility and land environment.[Result] Land fertility of Yanbian apple-pear main plantation areas belongs to the second-rate moderate level.Fertility of Longjing area is the highest,while that of Huichun is the lowest.Land environment quality of the 4 areas is at an excellent condition,but Ni and As content exceed the standard in particular samples in Sanhe and Tumen.Generally,there isn't the land heavy metal pollution.[Conclusion] The comprehensive land quality of Yanbian area is at a good level,it's suitable for apple-pear plantation.