| In recent years,Anhui Province has built a large number of runoff areas to monitor soil erosion,and accumulated a lot of natural geography,meteorology,runoff erosion and other information.According to the data,the author tries to obtain the law of soil and water loss in Anhui Province,and it is used to guide the construction and management of soil and water conservation.It is one of the most important works and the significance of the follow-up construction.At the same time,it is of great significance to find an effective soil erosion control scheme for Anhui Province to solve the problem of soil and water loss in Anhui Province by seeking an accurate and effective soil erosion prediction model for Anhui Province.In order to reveal the general rule of soil erosion in Anhui Province,this paper discusses the Meta-analysis method and WEPP model in runoff erosion in Anhui Province from different spatial scales.On the surface level,Integrate Runoff Erosion Data of Runoff in Anhui Province;On the point of view,the applicability of the WEPP model slope version in runoff erosion research in Anhui Province was discussed.The underlying surface as the focus of research,1?The paper according to the part of the data of runoff plots in Anhui province,based on integrated analysis principle,using Review software,Managers from the underlying surface,slope conditions,ways of land use,such as soil and water conservation measures for the integration analysis,discusses the influence of different factors on the runoff erosion in Anhui province,evaluates a comprehensive evaluation of different underlying surface,The main purpose of this paper is to solve the problem of soil and water loss in Anhui province,formulate scientific and effective method to control soil and water loss to provide theoretical support.2?This integrated analysis results show that the integrated analysis of the statistical methods of application in soil and water conservation field is practical and effective;In the four ways of land use,agricultural land,garden land,forest land,the effect value of farmland is lower than the other three types;In the four soil and water conservation tillage practices,the effect of slope planting on runoff erosion was lower than that of the other three types,The effect of slope gradient on runoff erosion is the highest.This paper analyzes the four gradient gradients,5?-10? ?10?-15? ?15?-20? ? 20?-25?,the runoff erosion effect is gradually weakened with the increase of slope.3?The applicability of WEPP model in runoff erosion research in Anhui Province was evaluated.With a view to the development of effective soil erosion program to provide guidance and model support.The applicability of the WEPP model in the study of the path erosion in Anhui Province was evaluated by the different land use patterns,different soil and water conservation measures and different slope rates.4?The applicability evaluation of WEPP model shows that the model has the best simulation results for garden land,among three different land use conditions,the ME values are 0.84 and 0.81 respectively.The ME values of the runoff and erosion simulations of three different land use types were all greater than 0.5.Under the condition of two different soil and water conservation measures,the Down slope cropping simulation results of the model are better than those of slope-to – terrace simulation results.The ME values are 0.84 and 0.81 respectively.In the 5 °,13 °,19 °,23 ° four different slope conditions,the model of the best simulation of the 5 ° cell,the 23 ° simulation of the worst.At the same time,the model is effective with the increase of slope Sex gradually reduced. |
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