【作者】 张玉江；

【Author】 Zhang Yu-jiang;Urban Hydrology Center of Zibo Hydrology Bureau;

【机构】 淄博市水文局城区水文中心；

【摘要】 运用降水与径流双累积曲线法、Mann-Kendall法,变差系数??等指标对东里店水文站1956～2016年系列径流资料进行分析,以判断水库建设、小流域治理、沂源县城区面积扩大、农业种植结构改变等下垫面变化对沂河上游流域天然径流的影响及其程度。经分析可见,沂河上游流域天然径流量有减少趋势但不明显,年际间的变化趋于平缓;水利工程尤其水库调蓄仍是主要影响因素,小流域治理导致降水截留、蓄渗增加亦影响了天然径流。更多还原

【Abstract】 With precipitation and runoff double accumulation curve method, Mann-Kendall method, coefficient of variation Cv such as indicators of Donglidian hydrologic station series runoff data from 1956 to 2016 were analyzed, and to determine the reservoir construction, small watershed management, yiyuan county urban area expansion, agricultural planting structure changed underlying surface changes on the influence of natural runoff YiHe upstream basin and its degree. It can be seen from the analysis that the natural runoff in the upper river basin of Yi River has a decreasing trend but not obvious, and the inter-annual change tends to be flat. Water conservancy projects, especially reservoir regulation and storage, are still the main influencing factors. Small watershed management leads to precipitation interception, storage and seepage increase, and also affects natural runoff.更多还原