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该研究旨在研制建立适合我国黄土区以小流域为单元、基于GIS栅格化的坡面径流路径及土壤侵蚀强度空间分异分析模拟模型 .以ViewGIS为平台 ,将流域图经栅格化处理和建立基于栅格化处理的关系型数据库 ,利用D8方法和DEMON方法 ,分析模拟径流路径 ;开发出了适于分析模拟黄土区小流域土壤侵蚀强度空间分布的模块 ,以小流域为单元对坡面径流路径进行了模拟 ,并模拟计算了通用水土流失方程的地形因子LS值在该流域坡面的分布 ,最后将计算结果存放于关系型数据库中 .该研究深入ViewGIS内核 ,在开发DEM径流分析、土壤侵蚀等功能的基础上 ,实现了对整个流域径流路径及土壤侵蚀地形地貌分异规律的计算机分析模拟与成图 ,为研制开发防护林体系高效空间配置智能化规划设计系统打下了良好的基础
This study aims to develop a simulation model that is suitable for the spatial analysis of slope runoff path and soil erosion intensity based on rasterization of small watersheds in the loess region of China.With ViewGIS as a platform, the watershed map is rasterized And established a relational database based on rasterization. By using D8 method and DEMON method, we analyzed and simulated the runoff path. Developed a module suitable for analyzing the spatial distribution of soil erosion intensity in a small watershed in a loess area. Using small watershed as a unit, Surface runoff path, and simulated the distribution of the topographic factor LS value of the common soil-water loss equation on the slope surface of the basin, and finally stored the results in the relational database.This study goes deep into the ViewGIS kernel, and in the development of DEM runoff analysis , Soil erosion and other functions, based on the realization of the watershed runoff path and soil erosion Topography differentiation of computer simulation and mapping, in order to develop efficient shelter shelter system layout intelligent planning and design system laid a good foundation