Abstract:Taking the terrace + Myrica rubra + Paspalum natatum (C1), hillside ditch+ fish-scale pits + Lonicera japonica (C2), terraced fields with slope + fish-scale pits + Camellia oleifera (C3), fish-scale pits + Camellia oleifera (C4), slub ditch + arbor and shrub and herb (C5) five soil and water conservation measures and no measures (CK) in purple soil slope land of Ninghua County, western Fujian Province as the research object, the available nutrients contents and erodibility characteristics were compared and analyzed; and the relationships between soil available nutrients and erodibility characteristics were revealed. The results showed that the available nutrients contents of purple soil were higher than those of CK except nitrate nitrogen under 5 soil and water conservation measures. The contents of ammonium nitrogen, nitrate nitrogen, available phosphorus (AP) and available potassium (AK) showed the changes of C2 > C3 > C4 > C1 > C5 > CK, C2 > CK > C4 > C3 > C5 > C1, C2 > C5 > C1 > C3 > C4 > CK and C2 > C1 > C3 > C5 > C4 > CK respectively. All the soil AN/AP and AN/AK under 5 soil and water conservation measures were less than CK, while AP/AK showed C3 < CK < C4 < C1 < C5 < C2. In general, five soil and water conservation measures could improve the balance of soil available nutrients. The K values of soil erodibility under 5 measures were lower than that of CK. The contents of soil organic carbon were higher than that of CK. Among them, the soil K value under C2 was the least, and the contents of organic carbon and sand were the highest. It could be seen that the soil and water conservation measures could effectively improve the anti-erosion ability in the purple soil slope of west Fujian, where the hillside ditch + fish-scale pits + Lonicera japonica gave the best. The soil available nutrients were closely related to the characteristics of erodibility. The higher the K value of soil erodibility, the more serious the available nutrients loss and the lower the available nutrients contents. These findings provided data support for evaluating the effect of soil erosion control in purple soil area of Western Fujian, and also provided reference for the selection of soil and water conservation measures in this area.