CAJ | 학술논문

水文水力条件的变化会给水生生物繁殖栖息带来一系列的影响，评估这些影响能为保护和重建物种栖息地提供科学依据。本文以葛洲坝下游河势调整前地形（2003年）和河势调整后地形（2008年）作为边界条件建立二维非恒定流水动力学模型，模拟中华鲟产卵场整个产卵期的水流变化特征。通过对比河势调整前后中华鲟产卵场地形、流场和涡量的变化，流量变化过程中各水流参数与相关系数的变化，以及河势调整工程给产卵场水力条件带来的变化，对照河势调整前后中华鲟产卵位置和资源量的变化进一步分析了其对中华鲟产卵的影响。结果显示，河势调整使中华鲟上产卵区河床高程抬升，流场紊动程度加大，水流结构随着流量变化的相关性减小；使下产卵区流场紊动程度减小。
수문수력조건적변화회급수생생물번식서식대래일계렬적영향，평고저사영향능위보호화중건물충서식지제공과학의거。본문이갈주패하유하세조정전지형（2003년）화하세조정후지형（2008년）작위변계조건건립이유비항정류수동역학모형，모의중화심산란장정개산란기적수류변화특정。통과대비하세조정전후중화심산란장지형、류장화와량적변화，류량변화과정중각수류삼수여상관계수적변화，이급하세조정공정급산란장수력조건대래적변화，대조하세조정전후중화심산란위치화자원량적변화진일보분석료기대중화심산란적영향。결과현시，하세조정사중화심상산란구하상고정태승，류장문동정도가대，수류결구수착류량변화적상관성감소；사하산란구류장문동정도감소。
The change of hydrological conditions can bring a series of influence to aquatic breeding habi-tat, and evaluation of the influence may provide a basis for protection and reconstruction species habitats. A two-dimensional unsteady hydrodynamics model based on the bathymetry before and after the river re-gime adjustment project was set up to simulate flow characteristics in the whole spawning period. Changes of the bathymetry,flow field,vorticity and the correlation coefficient between discharge and the correspond-ing flow parameters were compared, as well as the changes of the spawning location and spawning quanti-ty, to analyze the influence of the hydraulic changes on the Chinese sturgeon spawning. The results show that the river regime adjustment project raises the elevation of up-spawning site, increases the flow turbu-lence, decreases the correlation of discharge and flow parameters, and reduces the flow turbulence of down-spawning site.