USLE (Universal Soil Loss Equation) as a fundamental theory and GIS technique as a technical platform were used in this study for simulating soil erosion of normal value of accumulated year ( 1989-2008) in Hubei Province, and the simulated results were tested and verified. The contents of nutrients such as N and P were obtained, and average absorbed nitrogen and phosphorus load simulation over many years was conducted from the soil survey material. We obtained the following results: 1) A mean status soil erosion model for Hubei Province was studied and established. The soil erosion strength degree obtained from USLE and the corresponding grille calculation method was significantly correlated with MWR soil erosion data. Therefore, the feasibility of the established soil erosion model in Hubei Province was validated. 2) The simulation results of loads of absorbed nitrogen and phosphorus showed that the integral structure of soil absorbed nitrogen and phosphorus loads was similar to the soil erosion distribution pattern. Taking the Yangtze basin and Jianghan basin as the center for sediment deposition, the loads of absorbed nitrogen and phosphorus decreased from west to east, and from the north and south to the center.%采用美国通用USLE(土壤流失方程)作为建立侵蚀模型的基本理论,使用GIS等空间信息技术作为研究的技术平台,对湖北省进行了多年(1989-2008年)平均土壤侵蚀量的模拟,并对模拟结果进行验证.利用土壤普查资料获得氮、磷营养物含量,进行多年平均吸附态氮、磷量模拟.结果:①研究并建立了湖北省多年平均状况土壤侵蚀模型.利用USLE和栅格计算方法得到的土壤侵蚀强度等级大体上可以与水利部土壤侵蚀遥感数据相当,存在显著相关关系,由此验证了所建立的湖北省土壤侵蚀模型的可行性.②对湖北省吸附态氮、礴负荷进行的模拟结果显示,土壤吸附态氮、磷负荷整体结构与土壤侵蚀量分布规律相似,以长江、江汉盆地为输沙沉积中心,分别从南、北向中部,由西向东依次下降.
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