堵河中游生态水文情势变化分析

Analysis of Changes in Ecological and Hydrological Conditions in the Middle Reaches of the Duhe River

摘要: 针对河道径流易受人类活动影响而导致生态水文情势发生变化的情况，本文利用竹山水文站1959~2020年的实测径流数据，采用IHA-RVA法评估潘口水库建库后对堵河中游生态水文情势的影响。结果表明：潘口水库运行后对河流的控制程度较大，整体水文改变度57.8%。对各月平均流量、年极值流量、流量变化改变率及频率三组参数的影响较为明显，需采取相关措施，减少水利工程对水文情势的影响，以维持河流生态系统健康可持续发展。

Abstract: In response to the susceptibility of river runoff to human activities leading to changes in the ecological and hydrological situation, the IHA-RVA method was used to evaluate the impact of the construction of the Pankou Reservoir on the ecological and hydrological situation in the middle reaches of the Duhe River, using the measured runoff data during 1959 to 2020 at the Zhushan Hydrological Station. The results in-dicate that after the operation of Pankou Reservoir, the degree of control over the river is significant, with an overall hydrological change of 57.8%. The monthly average flow, annual extreme flow, rate of change in flow, and frequency are more significant. Relevant measures need to be taken to reduce the impact of wa-ter conservancy projects on hydrological conditions to maintain the healthy and sustainable development of river ecosystems.