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Soil is an important natural resource for human survival . The quality of the environment is directly related to the safety of agricultural products , have a profound impact on people's health . In recent years, serious soil pollution , the soil environmental degradation , sustainable development face serious challenges . In order to protect the soil environment , strengthen its service functions should be carried out on the soil environment protection and management of human society . Relationships to humans and the soil environment as a starting point , consider the factors of soil chemical properties of soil environmental quality , focusing on the background values ??of elements in soils , soil environmental capacity as well as elements of heavy metal pollution . In this paper, the central and western Jilin Province as the research object . The region is semi-arid humid monsoon climate , as the main forest land, agricultural land , grassland pasture . Geological accumulation index method and comprehensive pollution index method to evaluate the heavy metal pollution of the study area , soil fertility indicators to evaluate the green food producing suitable areas . Comprehensive evaluation and analysis of soil environmental quality of the study area , the results show that the lower degree of overall soil environmental pollution in the area , fertile land, suitable for the development of green agriculture . Cities and suburbs as well as the surrounding roads, railways and other areas , due to the interference of human activities , high levels of heavy metal pollutants , a higher degree of pollution . Along with the the abnormal geological environment in the eastern part of the heavy metal elements in the original content higher than the background value , and western areas from heavy metals concentrations lower than the background value . The western sandy soil fertility worst class IV and class V soils accounted for 62.96% , are ecologically fragile zone . According to the results of the evaluation of the area of soil environmental pollution forecast results, the soil environmental capacity of the area , the accumulation of heavy metal elements in soil below the soil background values ??, suitable for human survival and economic development . Interference areas of human activity , the input to the high content of heavy metal pollutants in the soil , soil environmental capacity reduction , pollution levels are increasing year by year .
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