Watershed is the basic portion of the great river, the stress of the water and soil erosion management.
小流域是大江大河的基本单元，也是长江流域水土流失治理的重点。
Watershed management is one of the most efficient ways for soil and water conservation in China.
小流域综合治理是我国开展水土保持生态环境建设的主要方式和途径之一。
Hydrologic method and soil conservation method are two usual methods for calculating sediment and runoff reduction benefit brought by watershed management, but both have some problems.
水文法和水保法是分析计算流域治理减水减沙效益常用的两种方法，但都存在一些问题。
Based on COMGIS technology, a GIS for the simulation of soil erosion of Dongzhen reservoir watershed has been created, which has the functions of data management, spatial analysis and visualization.
根据组件式GIS技术构建了东圳水库土壤侵蚀模拟GIS系统，该系统可以实现数据管理、空间分析、模型运算功能。
Conclusion the national economy evaluation on water and soil conservation management of the small watershed showed that this project will bring huge benefits and it is feasible.
结论小流域治理的国民经济评价表明，项目综合效益巨大，切实可行。
Conclusion the national economy evaluation on water and soil conservation management of the small watershed showed that this project will bring huge benefits and it is feasible.
结论小流域治理的国民经济评价表明，项目综合效益巨大，切实可行。
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