Difference structure stability were detected for brown soil collected from five typical land covers in the Yimeng mountainous area,and then the effect of soil structure stability on the sediment loss of total nitrogen(N) and phosphorus(P) were investigated for different land covers with the aid of field in-situ rainfall simulation tests.Results showed that,the soil structure stability was the strongest for hawthorn and arborvitae,moderate for weeds and honeysuckle,and the weakest for peanut.There were signi...