以大理河流域 1960-2002 年长系列降雨径流泥沙资料为基础，以 1969 年为分界年，视1969 年以前为天然状态， 1969 年以后为治理状态，将该流域按照本区的地貌类型、下垫面及水文站网布设情况等划分为青阳岔水文站以上区域、李家河水文站以上区域和绥德水文站以上 3 个区域。对各区域分别建立无治理措施年份的汛期降雨量和汛期径流量、汛期降雨量和汛期泥沙量、汛期径流量和汛期泥沙量经验关系式，用经验关系式的计算值和相应实测值进行比较，来分析实施水土保持措施对大理河流域径流泥沙变化的影响。

 Based on the long data sequences of precipitation, runoff and sediment from 1960 to 2002 in the Dalihe River Basin, the year of 1969 was regarded as a delimitation year, before which the watershed was considered as in its natural state, otherwise harnessing state. According to the geomorphic types, the underlying surface and hydrological station network, the basin was divided into three districts: the respective upper reaches of Qingyangcha Station, Lijiahe Station and Suide Station. The empirical equations in flood season between rainfall and runoff, rainfall and sediment, and runoff and sediment before the delimitation year of each district were established. The calculated values from the empirical equations were compared with the measured values to analyze the influence of human activities on the variation of runoff and sediment in the Dalihe River Basin.