摘要
借鉴国内外土壤侵蚀建模的经验与技术，针对我国干旱地区的实际情况，应用微机技术，建立了坡耕地土壤侵蚀过程数学模型ＳＬＥＭＳＥＰ，并在晋西北砖窑沟试验区得到了验证。模拟过程以天为步长，可预报不同耕作措施条件下，基于日降水量的坡面土壤侵蚀量，定量评价人类活动对土壤侵蚀过程的影响，为水土保持的决策和具体措施的制定提供依据。ＳＬＥＭＳＥＰ模型可进行长期模拟，应用于土壤变化和可持续利用的研究。
In accordance with the special characteristics of soil erosion process in the arid areas, a mathematical model named SLEMSEP (Soil Loss Estimation Model for Slope Erosion Process) was developed for simulating soil change caused by human activity, and was verified in the Zhuanyaogou watershed, northwest of Shanxi province. SLEMSEP continuously simulates the process of slope erosion realistically using a daily time step and readily available inputs. The model can be used in quantitatively evaluating the soil erosion impacted by human activities, forecasting the direction of the soil change, providing scientific basis for making strategic decisions on soil and water conservation and taking practices to control soil erosion. Since soil change might be a relatively slow process, SLEMSEP is capable of long term simulation if necessary.
基金
国家教委跨世纪人才基金
