The results indicate that the benefit of watershed water reduction by engineering harness of soil and water conservation was 18 . 1 % on what had been achieved in the period of the sixth five - year plan , and that the benefit by ecological and agricultural harness of soil and water conservation was 10 . 9 % on what had been achieved in the period of the seventh five - year plan 计算结果显示，在“六五”基础上王东沟小流域以梯田建设、土地平整、沟坡道路防蚀技术为主的水土保持工程措施平均减少地表径流18 . 1 % ，而在“七五”基础上以人工林草植被建设为主的生物措施和调整土地利用结构、扩大经济林果种植面积的农业措施共减少地表径流10 . 9 % 。
Starting from the " digital basin " and its application in soil and water conservation , through the key technology of establishing digital information system and its measures , the author expounds the theory model of developing information system of " digital basin " and its role in soil and water conservation 笔者从“数字流域”的概念入手，通过“数字流域”在水土保持工程综合应用过程中建立数字信息系统关键技术及其措施，并概述在开发“数字流域”信息系统中的理论模式和“数字流域”对水土保持工作的作用。
At least 1 full - time engineer who holds a civil , hydraulic , survey , environmental , structural , earth or water and soil conservation engineer certificate or architect certificate , has studied courses related to civil engineering and construction for some credit hours before getting the engineer certificate through exam , and has worked in civil engineering and construction for over 2 years 一置领有土木、水利、测量、环工、结构、大地或水土保持工程科技师证书或建筑师证书，并于考试取得技师证书前修习土木建筑相关课程一定学分以上，具二年以上土木建筑工程经验之专任工程人员一人以上。
Based on the measured data and the model of plotted watershed hydrology , the benefits of water reduction by different harnesses of soil and water conservation are firstly separated in watershed scale , which are the basis of evaluating the effect of rebuilding ecological environment of the loess plateau on the water resources of the yellow river 在实测资料的基础，借助流域网格划分的模型计算方法，首次在流域尺度内将水土保持工程措施和生物农业措施在减少地表径流中的作用分割开来，从而为定量评价黄土高原以林草植被建设为主的生态环境治理对黄河流域水资源的影响提供数据基础。
