摘要
根据小清河流域黄台桥水文站1965～2013年径流序列资料以及黄台桥雨量站的降水量数据，采用5a滑动平均法和Mann～Kendall非参数检验法，分析了小清河上游径流量和降水量的变化特征；在此基础上，利用径流量与降水量的双累积曲线对降水-径流序列进行了突变点分析，并对突变点前后径流量与降水量的Pearson相关系数进行了分析与检验。结果表明：小清河上游径流量与降水量均呈现增加趋势，但径流量较降水量的增加趋势显著。将小清河上游径流演变过程分为1965～1974年，1975～2003年和2004～2013年3个阶段，1965～1974年为天然径流阶段，1975～2013年为受人类活动影响显著阶段。在径流变化过程中，径流量与降水量的Peason相关系数逐渐减小，而人类通过排污、引水等活动加大了对径流量的影响程度，成为影响径流变化的决定性因素。科学地区分降水与人类活动对径流变化的影响，可以为研究流域水文循环过程提供借鉴，对实现水资源可持续利用也具有现实意义。
Annual runoff series data at Huangtai bridge hydrological station and precipitation data at Huangtai Bridge rainfall station during the period of 1965--2013 were applied to identify the changes of runoff and precipitation in Xaioqing river basin by using the 5~ year moving average method and Mann-Kendall test. On this basis, using double mass curve analys the sudden change point of runoff and precipitation. The Pearson correlation coefficients were analyzed and tested. The results showed that （1） runoff and precipitation showed an increasing trend, but the runoff increased more significantly. （2） the runoff series were devided into three periods, i. e. , 1965 - 1974,1975 2003 and 2004-2013. 1965-1974 is the natural runoff period, 1975-2013 is significantly affected by human activi- ties period. （3） in the change process of runoff, runoff and precipitation Peason correlation coefficient decreases gradually, whereas humans through sewage discharge, water diversion and other activities increased the impact on run-off, which became the decisive factor affecting runoff change. To distinguish the impacts of human activities and precipitation on runoff changes, can provide references for the study of the hydrological cycle in a basin and have practical significance for the sustainable use of water resources.
出处
《绿色科技》
2016年第18期147-152,共6页
Journal of Green Science and Technology
关键词
径流变化
降水
人类活动
小清河
runoff change
precipitation
human activity
Xiaoqing river upstream
