Design And Development Of Soil Erosion Model System For Regional Scale

As the largest agricultural country in the world,soil erosion in China has seriously restricted the development of agriculture and the sustainable development of social economy.Carry out dynamic monitoring of water loss and soil erosion scientifically and effectively,so as to master the dynamic change of soil erosion.However,the traditional soil and water loss monitoring means need to spend a lot of time and energy,therefore,based on existing soil erosion research results and 3S technology,develop a functional system of regional soil erosion model for rapid quantitative reveal the process and mechanism of soil erosion is particularly important,for further guidance for the scientific implementation of soil and water conservation has the vital significance.Based on the China soil erosion equation proposed by Liu Baoyuan and other scholars,this paper analyzed the process and mechanism of soil erosion,designed and implemented a regional soil erosion model system independent of any commercial software.In addition,this paper analyzed the principle and process of kriging interpolation algorithm,designed and implemented a set of parallel kriging interpolation algorithm based on compute unified device architecture,and integrated the algorithm with the regional soil erosion model system,which improves the efficiency of data processing of the system to some extent.The main research results in this paper can be summarized as follows:(1)The overall architecture of regional soil erosion model system and the function module was designed.Based on the existing soil erosion models at home and abroad,this paper analyzed the modeling ideas and methods of each model,and then,starting from the China soil erosion equation,deeply analyzed the requirements of the system from three aspects of business,function and performance,and designed the overall architecture of the system and the functional modules of the system.(2)A regional soil erosion model system was developed.Six core functions such as user management,model data management,data preprocessing,model calculation,data visualization and log management were implemented.In addition,in order to solve the problem of low efficiency of spatial interpolation in the system data preprocessing function module,a set of parallel kriging interpolation algorithm based on compute unified device architecture was implemented,and the algorithm was integrated into the system data preprocessing function module,which greatly improved the efficiency of data preprocessing.(3)All functional modules of the soil erosion model system were tested.In this paper,all the functional modules of the system were tested by means of black box testing and white box testing,the test results show that the system functions can meet the requirements of the system design,and the system has good robustness.By using the platform to carry out long-term monitoring,it can provide technical support for the water and soil conservation department to some extent.