水力发电学报2025，Vol.44Issue(10)：99-108,10.DOI:10.11660/slfdxb.20251009
黄河下游全河段鱼类栖息地适宜度模拟研究
Simulations of fish habitat suitability in entire lower reach of Yellow River
摘要
Abstract
Fish habitat suitability models are critical to assessing riverine ecological health.Previous studies on the habitat simulations of the Yellow River carp-an ecological indicator species-rely largely on two-dimensional or three-dimensional hydrodynamic modeling.However,most of these approaches are limited to short river reaches of tens of kilometers due to high computational demands and challenges in acquiring high-resolution topographic data,focusing on the influence of water depth and flow velocity in rivers.This study develops a one-dimensional water-sediment-temperature coupled numerical model that achieves a rapid simulation of water-sediment-temperature processes along the entire lower Yellow mainstream,allowing to account for different cross-sectional geometries and various flow velocity distributions.We have conducted habitat suitability simulations based on the daily-scale flows and sediment data of 1999-2021,and the results reveal that in this reach,the total water volume is a dominant factor of its downstream ecological health.As the volume increases,the weighted usable area of habitats increases initially and then decreases,peaking in an optimal volume range of 25.5-36.5 billion m3.In the range of 20-25 billion m3,the weighted usable area is in quite scattering,highlighting the dominant role of flow and sediment changes in shaping the overall ecosystem health in this reach.The simulations further demonstrate high sediment concentrations in the flow-sediment regulation period reduce the weighted usable area drastically,yet the overall impact of its sediment remains limited because the duration of high-sediment transport in flood season is short.This study has developed a basic tool for assessing river ecosystem health that helps further exploration of ecological thresholds and sustainable water resource management of large sediment-laden rivers.关键词
环境水文学/栖息地适宜度模型/黄河鲤/水-沙-温模型/黄河下游/河流生态Key words
environmental hydrology/habitat suitability model/Yellow River carp/flow-sediment-temperature model/lower reach of the yellow river/river ecology分类
资源环境引用本文复制引用
李光淼,张禹,王浩,伍梓..黄河下游全河段鱼类栖息地适宜度模拟研究[J].水力发电学报,2025,44(10):99-108,10.基金项目
国家重点研发计划项目(2021YFC3200402) （2021YFC3200402）
