Abstract:
The soil environment of 6 types of agricultural fields(abandoned field,dry farming field,vegetable field,greenhouse,paddy field,and sewage irrigated paddy field) of Anshan City was assessed with principle component analysis (PCA) and Nemerow index methods,separately.The result indicates that the style of planting and irrigation can make clear discrepancy in soil contamination and environmental quality of agricultural fields.Among 6 types of fields,the soil environment of abandoned field is the best,and then are vegetation field,dry farming field,paddy field and greenhouse in turn.The sewage-irrigated paddy field is the worst.The assessment results of PCA and Nemerow index methods are basically consistent to 4 out of 6 types of fields,except vegetable and dry farming with little difference.The result implied that the method of PCA can be used in soil environmental assessment and quantitative identification of soil contamination.