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以郭家河小流域为例,在3S技术的支持下,采集和处理各类数据,建立小流域基础地理数据库。采用土壤侵蚀快速评估的方法确定土壤侵蚀强度,建立土地等级评价模型,评价分析流域内土地等级。确定总体规划目标,合理安排农、林、牧等各业用地,因地制宜地布设综合治理措施。3S技术的应用,使得整个工程实现了空间可视化、定量化与规范化。
Taking Guojiahe watershed as an example, with the support of 3S technology, various types of data are collected and processed, and a basic geographic database of small watersheds is established. Soil erosion intensity was determined by rapid assessment of soil erosion. Land evaluation model was established to evaluate and analyze the land classification in the basin. Determine the overall planning objectives, reasonable arrangements for agriculture, forestry, animal husbandry and other industries land, according to local conditions to lay the comprehensive management measures. 3S technology, making the entire project to achieve the visualization of space, quantitative and standardized.