辽西北农牧交错区土壤退化评价指标体系

Evaluation index system of soil deterioration in Inter-distributing area of farming and pasturing of northwestern Liaoning Province

为了科学评价辽宁西北部农牧交错区土壤退化特征,采用理论分析与实验的方法,分析了土壤退化原因和土壤生态系统的演变过程,研究了风沙土和草甸土土壤退化评价指标体系,结果表明:评价风沙土区土壤退化指标为:有机质、全氮、全磷、沙粘比;评价草甸土区土壤退化指标为:pH值、电导率、有机质、全氮、全磷、碱解氮。

In order to evaluate the characteristics of soil deterioration in the inter-dstributing area of Farming and pasturing of northwestern Liaoning Province, using theoretical analysis method and experimental method, we analyzed the reason for soil deterioration and evolution process of soil ecosystem,studied evaluation index system of soil deterioration on aeolian sandy soil and meadow soil. The results show that indexes of evaluating soil deterioration on aeolian sandy soil are organic matter,total nitrogen, total phosphorus,sand viscosity ratio, and indexes of evaluating soil deterioration on meadow soil are PH, electrical conductivity, total nitrogen, total phosphorus and alkali dispelled nitrogen.