Study of Soil Nutrients Under Different Land Use in Beiyunhe River Downstream

[Objective]The research aimed to study the effects of land use on soil nutrients distribution in different profile.[Method]Soil sampling was conducted in Wuqing distnct,the Beiyun he River downstream.Soil nutrients such as pH,available nitrogen,available phosphorus,available potassium,organic matter and soil mechanical composition were measured.The analysis was combined with land use in Wuqing.[Result]Different land use had the effects on soil mechanical composition to a certain extent.The trend in soil nutrient content was that organic matter,nitrogen content was basically throwingSshaped distribution,K wasUshaped distribution,while available phosphorus content showed a linear downward trend.Under different land use patterns,more obvious differences were existed in top soil nutrients.[Conclusion]Available phosphorus,organic matter,available nitrogen,available potassium content had the character of surface accumnulation in some extent and awaiable phosphorus content was the most representative.