水科学进展2025，Vol.36Issue(2)：264-274,11.DOI:10.14042/j.cnki.32.1309.2025.02.008
乌东德水库分层取水策略及生态响应
Research on selective withdrawal strategy and ecological response of Wudongde Reservoir
摘要
Abstract
To explore the response relationship between the improvement effect of the stoplog gate and the stratification conditions of the water temperature upstream from the dam and its ecological effects on downstream fish reproduction,a two-dimensional water temperature model of the Wudongde Reservoir area was established based on the CE-QUAL-W2 model.A dynamic simulation of the water temperature under typical selective withdrawal conditions was carried out.The results revealed that under the nonselective withdrawal scenario of Wudongde Reservoir,the discharge temperature from April to May was 0～1.3 ℃ lower than the natural water temperature.After the stoplog gate was adopted,the daily improvement range was 0.2～1.2 ℃,and the proportion of the water temperature suitability index for the representative fish species(Rhinogobio ventralis)increased from 33.5％to 65.0％.When the water temperature improvement range was 0.6～1.0℃,the vertical temperature difference and stratification stability index needed to reach 6.2～8.3 ℃ and 556.9～1 036.8 kg/m2,respectively,and the stoplog gate needed to be continuously operated until early April.This study reveals the quantitative relationship between the strength of water temperature stratification and the effects of stoplog gates,providing a scientific basis for the optimization of stratified water intake scheduling schemes for large reservoirs such as Wudongde Reservoir.关键词
水温/分层取水/生态调度/CE-QUAL-W2模型/乌东德水库Key words
water temperature/selective withdrawal/ecological operation/CE-QUAL-W2 model/Wudongde Reservoir分类
建筑与水利引用本文复制引用
戴凌全,王浩宇,刘璇,脱友才,姜伟,邓云..乌东德水库分层取水策略及生态响应[J].水科学进展,2025,36(2):264-274,11.基金项目
中国长江三峡集团有限公司项目(202303295) （202303295）
国家自然科学基金项目(52479067) The study is financially supported by the China Three Gorges Corporation Project(No.202303295)and the National Natural Science Foundation of China(No.52479067). （52479067）
